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Zahid A, Taylor GJ, Lau SCL, Stone S, Bagby RM. Examining the Incremental Validity of the Perth Alexithymia Questionnaire (PAQ) Relative to the 20-Item Toronto Alexithymia Scale (TAS-20). J Pers Assess 2024; 106:242-253. [PMID: 37144843 DOI: 10.1080/00223891.2023.2201831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 03/28/2023] [Indexed: 05/06/2023]
Abstract
The 20-item Toronto Alexithymia Scale (TAS-20) is the most widely used instrument for assessing alexithymia, with more than 25 years of research supporting its reliability and validity. The items that compose this scale were written to operationalize the components of the construct that are based on clinical observations of patients and thought to reflect deficits in the cognitive processing of emotions. The Perth Alexithymia Questionnaire (PAQ) is a recently introduced measure and is based on a theoretical attention-appraisal model of alexithymia. An important step with any newly developed measure is to evaluate whether it demonstrates incremental validity over existing measures. In this study using a community sample (N = 759), a series of hierarchical regression analyses were conducted that included an array of measures assessing constructs closely associated with alexithymia. Overall, the TAS-20 showed strong associations with these various constructs to which the PAQ was unable to add any meaningful increase in prediction relative to the TAS-20. We conclude that until future studies with clinical samples using several different criterion variables demonstrate incremental validity of the PAQ, the TAS-20 should remain the self-report measure of choice for clinicians and researchers assessing alexithymia, albeit as part of a multi-method approach.
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Affiliation(s)
- Aqsa Zahid
- Department of Psychological Clinical Science, University of Toronto
| | | | | | | | - R Michael Bagby
- Department of Psychological Clinical Science, University of Toronto
- Department of Psychiatry, University of Toronto
- Department of Psychology, University of Toronto
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Lin XX, Chen YH, Wang YZ, Sun YB, Wang N, Luo F, Wang JY. Soreness Reminds Me of Grief: Patients With Chronic Pain Show Less Differentiated Representations of Emotional Feelings and Bodily States. THE JOURNAL OF PAIN 2024; 25:557-569. [PMID: 37742906 DOI: 10.1016/j.jpain.2023.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/31/2023] [Accepted: 09/12/2023] [Indexed: 09/26/2023]
Abstract
People experience similarities between emotional feelings and bodily states on a daily basis, but both the magnitude and pervasiveness of this experiential similarity vary across individuals. Inspired by previous findings that chronic pain (CP) is characterized by strengthened pain-affect coupling and reduced interoceptive accuracy, we conducted 2 cross-sectional studies to examine whether patients with CP would exhibit less differentiated perception and mental representation of emotional feelings and bodily states. In study 1 (N = 500), patients with CP and healthy controls (HCs) completed a self-report questionnaire that asked explicitly about the perceived similarity between 5 basic emotion categories and a series of bodily states. In study 2 (N = 73), a specially designed false memory test was administered to examine whether patients with CP would have reduced differentiation of concepts of negative emotion and somatic distress. We found that patients with CP perceived greater and more pervasive similarities between emotional feelings and bodily states, as indicated by higher questionnaire scores and denser, less specialized bipartite emotion-body networks, both associated with lower subjective interoceptive accuracy. Furthermore, patients with CP formed false memories of negative emotion words (eg, grief) more readily than HCs after memorizing somatic distress words (eg, soreness), as if they represented negative emotion and somatic distress as a single, enmeshed semantic category. Our findings extend previous literature by demonstrating reduced discrimination between emotional and bodily experiences in CP that is not restricted to pain-related emotional and sensory experiences and may be related to a fundamentally less differentiated interoception. PERSPECTIVES: This study shows that patients with chronic pain have a profoundly less differentiated perception and implicit conceptualization of emotional feelings and bodily states, which appears to be associated with altered interoception. These findings may provide new perspectives on why they often experience a stronger pain-affect coupling.
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Affiliation(s)
- Xiao-Xiao Lin
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, PR China
| | - Ya-Hong Chen
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, PR China
| | - Yu-Zheng Wang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, PR China
| | - Ya-Bin Sun
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, PR China
| | - Ning Wang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, PR China
| | - Fei Luo
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, PR China
| | - Jin-Yan Wang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, PR China
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Silveira S, Godara M, Faschinger A, Singer T. Reducing alexithymia and increasing interoceptive awareness: A randomized controlled trial comparing mindfulness with dyadic socio-emotional app-based practice. J Affect Disord 2023; 341:162-169. [PMID: 37598721 DOI: 10.1016/j.jad.2023.08.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 08/22/2023]
Abstract
BACKGROUND Emotion processing deficits of alexithymia are a transdiagnostic risk factor. While such deficits are malleable, the differential efficacy of brief scalable digital mental trainings remains understudied. METHODS This randomized controlled trial probed the efficacy of mindfulness-based (MB) and partner-based socio-emotional Affect Dyad (SE) practice, both supported by weekly coaching sessions, in reducing alexithymia in 285 adult participants. We investigated the predictive role of interoceptive awareness assessed a) before and after daily practice, b) in ecological momentary assessment (EMA) before and after the intervention, and c) weekly during the 10-week intervention. RESULTS Both interventions reduced emotion processing difficulties on the Toronto Alexithymia Scale (TAS-20). Similarly, both interventions improved interoceptive awareness immediately after daily practice and after the intervention period, yet SE outperformed MB training in EMA assessments. Further, only Dyad practice led to increases in body listening and self-regulatory aspects of the Multidimensional Assessment of Interoceptive Awareness (MAIA) over time, with the latter explaining a decrease in alexithymia. LIMITATIONS Given the subclinical study sample, findings are limited in their generalizability to clinical samples. CONCLUSIONS Findings suggest that app-based socio-emotional and mindfulness-based practices, supported by online coaching sessions, are effective in reducing emotion processing deficits. Dyad training showed advantages on some measures of body awareness, which predicted observed changes in alexithymia. This highlights the potential of using app-based dyadic approaches in the development of emotion awareness and regulation.
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Affiliation(s)
- Sarita Silveira
- Social Neuroscience Lab, Max Planck Society, Berlin, Germany.
| | - Malvika Godara
- Social Neuroscience Lab, Max Planck Society, Berlin, Germany
| | - Anna Faschinger
- Social Neuroscience Lab, Max Planck Society, Berlin, Germany
| | - Tania Singer
- Social Neuroscience Lab, Max Planck Society, Berlin, Germany
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Taylor GJ, Bagby RM, Porcelli P. Revisiting the Concept of Pensée Opératoire: Some Conceptual, Empirical, and Clinical Considerations. Psychodyn Psychiatry 2023; 51:287-310. [PMID: 37712663 DOI: 10.1521/pdps.2023.51.3.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
The concept of pensée opératoire (operational thinking) was introduced by French psychoanalysts in 1963 and a decade later was included as an essential component of the alexithymia construct as formulated by the U.S. analysts John Nemiah and Peter Sifneos. Despite a large body of research on alexithymia, the pensée opératoire component is not well understood, especially among clinicians and researchers who are not familiar with French psychoanalytic literature. In this article we clarify the definition and metapsychological conceptualization of the concept, review findings from some relevant empirical studies, and critique a recent proposal for redefining the alexithymia construct that departs from the original understanding of pensée opératoire. We also discuss some clinical implications of the concept and some strategies that psychotherapists can employ in the treatment of patients with this mode of thinking.
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Affiliation(s)
- Graeme J Taylor
- Professor Emeritus of Psychiatry, University of Toronto, Canada
| | - R Michael Bagby
- Professor of Psychology and Psychiatry, University of Toronto, Canada
| | - Piero Porcelli
- Professor of Clinical Psychology, Department of Psychological, Health, and Territorial Sciences, University of Chieti, Italy
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Cecchetto C, Dal Bò E, Aiello M, Fischmeister FPS, Gentili C, Osimo SA. Alexithymia modulates the attitudes towards odors but not the olfactory abilities or the affective reactions to odors. PLoS One 2023; 18:e0278496. [PMID: 37279254 DOI: 10.1371/journal.pone.0278496] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 05/23/2023] [Indexed: 06/08/2023] Open
Abstract
Although emotion and olfaction are closely linked, only a few studies have investigated olfactory processing in alexithymia, a condition characterized by altered emotional processing. These results do not allow comprehensive conclusions on whether individuals with alexithymia present lower olfactory abilities or only altered affective reactions and awareness of odors. Three pre-registered experiments were conducted to clarify this relation. We assessed olfactory functions, the affective qualities of odors, the awareness of odors, the attitudes towards them, and the ability to form olfactory images in the mind. Bayesian statistics were used to assess differences between low, medium and high alexithymia groups, and Linear Mixed Models (LMMs) were applied to investigate the modulation of the affective and cognitive components of alexithymia. We observed that individuals with a high level of alexithymia presented the same olfactory abilities, and did not show differences in their rating of odors compared to individuals with low alexithymia levels, while they reported lower levels of social and common odor awareness and a more indifferent attitude towards odors. Olfactory imagery was not affected by alexithymia level, and the affective and cognitive components of alexithymia, when considered separately, modulated olfactory perception differently. Learning more about olfactory perception in individuals with alexithymia leads to a better understanding of how alexithymia impacts the perception of hedonic stimuli coming from different sensory modalities. Our results imply that treatment goals for alexithymia should be the enhancement of the conscious perception of odors, supporting the use of mindfulness-based protocols in the alexithymia treatment.
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Affiliation(s)
- Cinzia Cecchetto
- Department of General Psychology, University of Padua, Padua, Italy
| | - Elisa Dal Bò
- Department of General Psychology, University of Padua, Padua, Italy
- Padova Neuroscience Center (PNC), University of Padua, Padua, Italy
| | - Marilena Aiello
- Department of Psychology "Renzo Canestrari", University of Bologna, Bologna, Italy
| | - Florian Ph S Fischmeister
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
- Institute of Psychology, University of Graz, Graz, Austria
- BioTechMed-Graz, Graz, Austria
| | - Claudio Gentili
- Department of General Psychology, University of Padua, Padua, Italy
- Padova Neuroscience Center (PNC), University of Padua, Padua, Italy
| | - Sofia Adelaide Osimo
- Department of Psychology, MibTec, Università degli Studi di Milano-Bicocca, Milan, Italy
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Cengiz G, Şaş S, Kaplan H, Özsoy S, Çalış M. The influence of alexithymia on disease activity and quality of life in patients with axial spondyloarthritis: A cross-sectional study. Int J Rheum Dis 2023. [PMID: 37186380 DOI: 10.1111/1756-185x.14704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/16/2023] [Accepted: 04/08/2023] [Indexed: 05/17/2023]
Abstract
OBJECTIVE To evaluate the prevalence of alexithymia and its influence on disease activity, quality of life, and clinical outcomes in axial spondyloarthritis (axSpA) patients. PATIENTS AND METHODS This cross-sectional study included 110 (59 men and 51 women) consecutive axSpA patients who agreed to participate at our rheumatology outpatient clinic. Patient demographics, pain, disease activity measures, functionality, quality of life, alexithymia, psychological status, neuropathic pain, and fibromyalgia were evaluated. Patients were divided into 2 groups (without vs with alexithymia) and compared. The risk factors for alexithymia were evaluated. RESULTS The prevalence of alexithymia in axSpA patients was 31.8% according to a Toronto Alexithymia Scale-20 cutoff of ≥61. The mean age and body mass index of patients were 41.25 ± 9.64 years and 27.73 ± 4.51 kg/m2 , respectively. Most patients with alexithymia were women. Patients with alexithymia had significantly high scores for depression, anxiety, fibromyalgia, disease activity, enthesitis, worse quality of life, and poor functionality (all P < 0.05). Female gender (odds ratio [OR] = 22.359), patient global assessment (OR = 7.873), Bath Ankylosing Spondylitis Functional Index (OR = 1.864), and fibromyalgia symptom severity (OR = 1.303) were found to be independent risk factors for alexithymia. CONCLUSION The present study results showed that about one-third of axSpA patients had alexithymia, and the patients with alexithymia had higher disease activity, worse quality of life, and worse functional status than those without alexithymia. Female gender, patient global assessment, functional status, and fibromyalgia symptom severity were found to be important contributing factors to alexithymia.
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Affiliation(s)
- Gizem Cengiz
- Division of Rheumatology, Department of Physical Medicine and Rehabilitation, School of Medicine, Erciyes University, Kayseri, Turkey
| | - Senem Şaş
- Division of Rheumatology, Department of Physical Medicine and Rehabilitation, School of Medicine, Erciyes University, Kayseri, Turkey
| | - Hüseyin Kaplan
- Division of Rheumatology, Department of Physical Medicine and Rehabilitation, School of Medicine, Erciyes University, Kayseri, Turkey
| | - Saliha Özsoy
- Department of Psychiatry, Erciyes University School of Medicine, Kayseri, Turkey
| | - Mustafa Çalış
- Division of Rheumatology, Department of Physical Medicine and Rehabilitation, School of Medicine, Erciyes University, Kayseri, Turkey
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Macía L, Jauregui P, Herrero M, Iruarrizaga I, Micó V, Lamas J, Estévez A. Sex-comparative study of gambling disorder regarding alexithymia and symptoms of depression, anxiety and hostility. Compr Psychiatry 2023; 122:152364. [PMID: 36682199 DOI: 10.1016/j.comppsych.2023.152364] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/30/2022] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND AND AIMS Alexithymia and psychological symptomatology have been closely associated with gambling disorder (GD). However, sex differences remain underexplored. This study aims, firstly, to explore the differences between groups (GD and no-GD) and sexes (women vs. men) in alexithymia and psychological symptomatology (depression, anxiety and hostility). Secondly, the relationship between alexithymia and psychological symptomatology was analysed by gambling and sex groups. Thirdly, it examines the moderation role of sex and gambling in the relationship between alexithymia and each psychological symptom. METHOD The sample was composed of 80 people with GD diagnosis and 80 without GD (40 women and 40 men in each group). RESULTS The results showed that alexithymia is positively related to depression, anxiety and hostility, with significantly higher scores in people with GD. Moderation analyses showed a threefold interaction, in which higher alexithymia was related to higher depression for men with GD but not for GD-women. However, in women with GD, depression levels are higher than in people without GD and tend to be more stable over time, despite the lack of effect of alexithymia. CONCLUSIONS These results provide evidence indicating that dysfunctional psychological symptomatology affects people with GD to a greater extent than people without GD, but also that the aetiology and effect of underlying vulnerability factors on gambling is different according to sex. The need of prevention and treatment programmes that consider different psychological aspects depending on sex is reinforced.
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Affiliation(s)
- Laura Macía
- Faculty of Health Sciences, Psychology Department, University of Deusto, 48007 Bilbao, Spain
| | - Paula Jauregui
- Faculty of Health Sciences, Psychology Department, University of Deusto, 48007 Bilbao, Spain
| | - Marta Herrero
- Faculty of Health Sciences, Psychology Department, University of Deusto, 48007 Bilbao, Spain
| | - Iciar Iruarrizaga
- Department of Experimental Psychology, Cognitive Processes and Speech Therapy, Faculty of Social Work, Complutense University of Madrid, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Virtu Micó
- Federación Española de Jugadores de Azar Rehabilitados [FEJAR; Spanish Federation of Rehabilitated Gamblers], 03400 Alicante, Spain
| | - Juan Lamas
- Federación Española de Jugadores de Azar Rehabilitados [FEJAR; Spanish Federation of Rehabilitated Gamblers], 03400 Alicante, Spain
| | - Ana Estévez
- Faculty of Health Sciences, Psychology Department, University of Deusto, 48007 Bilbao, Spain.
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Preece DA, Mehta A, Petrova K, Sikka P, Bjureberg J, Chen W, Becerra R, Allan A, Robinson K, Gross JJ. The Perth Alexithymia Questionnaire-Short Form (PAQ-S): A 6-item measure of alexithymia. J Affect Disord 2023; 325:493-501. [PMID: 36642314 DOI: 10.1016/j.jad.2023.01.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 12/21/2022] [Accepted: 01/08/2023] [Indexed: 01/15/2023]
Abstract
BACKGROUND Alexithymia is a trait characterized by difficulties identifying feelings, difficulties describing feelings, and externally orientated thinking. It is widely regarded as an important transdiagnostic risk factor for a range of psychopathologies, including depressive and anxiety disorders. Whilst several well-validated psychometric measures of alexithymia exist, these are relatively lengthy, thus limiting their utility in time-pressured settings. In this paper, we address this gap by introducing and validating a brief 6-item version of the Perth Alexithymia Questionnaire, called the Perth Alexithymia Questionnaire-Short Form (PAQ-S). METHOD Across two studies with adult samples (Study 1 N = 508 United States community; Study 2 = 378 Australian college students), we examined the psychometric properties of the PAQ-S in terms of its factor structure, reliability, and concurrent/criterion validity. RESULTS In exploratory and confirmatory factor analyses, all PAQ-S items loaded well on a single general alexithymia factor. The PAQ-S total score had high reliability, and correlated as expected with the long-form of the PAQ, as well as other established markers of alexithymia, emotion regulation, and affective disorder symptoms. LIMITATIONS Our samples were general community or college student samples from two Western countries; future validation work in clinical samples and more diverse cultural groups is thus needed. CONCLUSIONS The PAQ-S retains the psychometric strengths of the PAQ. As such, the PAQ-S can be used as a quick, robust measure of overall alexithymia levels. The introduction of the PAQ-S hence enables valid assessments of alexithymia in a more diverse range of settings and research designs.
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Affiliation(s)
- David A Preece
- Curtin University, Curtin enAble Institute, Perth, Australia; Curtin University, School of Population Health, Perth, Australia; University of Western Australia, School of Psychological Science, Perth, Australia.
| | - Ashish Mehta
- Stanford University, Department of Psychology, Stanford, United States
| | - Kate Petrova
- Stanford University, Department of Psychology, Stanford, United States
| | - Pilleriin Sikka
- Stanford University, Department of Psychology, Stanford, United States; University of Turku, Department of Psychology and Speech-Language Pathology, Finland; University of Turku, Turku Brain and Mind Center, Finland; University of Skövde, Department of Cognitive Neuroscience and Philosophy, Sweden
| | - Johan Bjureberg
- Karolinska Institutet, Department of Clinical Neuroscience, Centre for Psychiatry Research, Sweden; Stockholm County Council, Stockholm Health Care Services, Stockholm, Sweden
| | - Wai Chen
- Curtin University, Curtin enAble Institute, Perth, Australia; Curtin University, Curtin Medical School, Perth, Australia; University of Western Australia, Graduate School of Education, Perth, Australia; University of Notre Dame Australia, School of Medicine, Perth, Australia; Murdoch University, Perth, Australia; Fiona Stanley Hospital, Mental Health Service, Perth, Australia
| | - Rodrigo Becerra
- University of Western Australia, School of Psychological Science, Perth, Australia
| | - Alfred Allan
- Edith Cowan University, School of Arts and Humanities, Perth, Australia
| | - Ken Robinson
- Edith Cowan University, School of Arts and Humanities, Perth, Australia
| | - James J Gross
- Stanford University, Department of Psychology, Stanford, United States
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McAtamney K, Mantzios M, Egan H, Wallis DJ. A systematic review of the relationship between alexithymia and emotional eating in adults. Appetite 2023; 180:106279. [PMID: 36087827 DOI: 10.1016/j.appet.2022.106279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 07/07/2022] [Accepted: 08/13/2022] [Indexed: 12/15/2022]
Abstract
Elucidating psychological characteristics associated with emotional eating may further inform interventions for this behaviour related to eating psychopathology. The present systematic review aimed to examine the relationship between alexithymia and self-reported emotional eating in adults, and provide a narrative synthesis of the existing literature. Using the PRISMA method for systematic reviews, six databases (MEDLINE, PsycInfo, PsycArticles, PubMed, SCOPUS, and Web of Science) were searched for peer-reviewed, quantitative research published between January 1994 and 20th July 2021, when the searches were conducted. Eligible articles investigated the association between alexithymia, as measured by the Toronto Alexithymia Scale (Bagby, Parker, & Taylor, 1994), and emotional eating, as measured by any validated self-report instrument. Nine cross-sectional articles were reviewed, and risk of bias was assessed using the Appraisal Tool for Cross-Sectional Studies (Downes, Brennan, Williams, & Dean, 2016). A narrative synthesis of articles suggests positive associations between alexithymia and self-reported emotional eating. Five measures of emotional eating were used across articles, with limited but consistent evidence for the relationship between alexithymia and emotional eating as measured by the Dutch Eating Behaviour Questionnaire (Van strien et al., 1986). Further research is required to add evidence to the nature of the relationship between alexithymia and emotional eating, and to explore mechanisms that might underpin any relationships. Understanding the association between alexithymia and emotional eating may support strategies and interventions for those seeking help for emotional eating and related eating behaviours.
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Affiliation(s)
- Katherine McAtamney
- Department of Psychology, School of Social Sciences, Birmingham City University, Cardigan Street, Birmingham, B4 7DB, United Kingdom.
| | - Michail Mantzios
- Department of Psychology, School of Social Sciences, Birmingham City University, Cardigan Street, Birmingham, B4 7DB, United Kingdom.
| | - Helen Egan
- Department of Psychology, School of Social Sciences, Birmingham City University, Cardigan Street, Birmingham, B4 7DB, United Kingdom.
| | - Deborah J Wallis
- Department of Psychology, School of Social Sciences, Birmingham City University, Cardigan Street, Birmingham, B4 7DB, United Kingdom.
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Gaggero G, Dellantonio S, Pastore L, Sng KHL, Esposito G. Shared and unique interoceptive deficits in high alexithymia and neuroticism. PLoS One 2022; 17:e0273922. [PMID: 36044535 PMCID: PMC9432684 DOI: 10.1371/journal.pone.0273922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/17/2022] [Indexed: 11/18/2022] Open
Abstract
Interoception is the perception of internal bodily signals. It is considered fundamental to developing emotional awareness. For this reason, interoceptive deficits are often associated with alexithymia, a condition characterized by difficulty identifying feelings (DIF), difficulty describing feelings (DDF), and an externally-oriented style of thinking (EOT). Yet, the atypical interoception found in alexithymia might be of a similar type and/or more serious than those found in other partially overlapping constructs that entail emotional difficulties and behavioural patterns associated with specific emotional styles. Our study explores this issue by examining the relationship between the interoceptive deficits associated with alexithymia and the Big Five personality traits. A non-clinical sample (N = 504) completed the Toronto Alexithymia Scale, the Big Five Inventory and the Multidimensional Assessment of Interoceptive Awareness. Data were analysed using a network analytic approach that conceives psychological traits as networks of interacting symptoms. The estimated network highlighted that EOT is the alexithymia component least associated with interoception and most associated with lower Openness to Experience. Conversely, DIF and Neuroticism are, respectively, the dimensions of alexithymia and the Big Five most highly associated with interoception. We also compared interoceptive abilities in the four groups of participants whose scores were a) high for both alexithymia and neuroticism, b) high only for alexithymia c), high only for neuroticism, and d) low for both. High alexithymia was especially associated with the tendency to ignore sensations of pain or discomfort, while neuroticism was more indicative of the tendency to worry about these sensations. These results suggest that while high alexithymia and neuroticism share some interoceptive deficits, others are unique to alexithymia and contribute to overall lower interoceptive ability in this condition. Our findings suggest that interventions to enhance awareness of bodily sensations can be beneficial especially for profiles who present high neuroticism and alexithymia.
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Affiliation(s)
- Giulia Gaggero
- Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
- * E-mail:
| | - Sara Dellantonio
- Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
| | - Luigi Pastore
- Department of Education, Psychology, Communication, University of Bari, Bari, Italy
| | - Kelly H. L. Sng
- Psychology Program, School of Social Sciences, Nanyang Technological University, Singapore, Singapore
| | - Gianluca Esposito
- Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
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Luo H, Gong X, Chen X, Hu J, Wang X, Sun Y, Li J, Lv S, Zhang X. Exploring the links between alexithymia and cognitive emotion regulation strategies in internet addiction: A network analysis model. Front Psychol 2022; 13:938116. [PMID: 35978791 PMCID: PMC9376254 DOI: 10.3389/fpsyg.2022.938116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 07/14/2022] [Indexed: 12/24/2022] Open
Abstract
Alexithymia and emotion regulation are closely related to internet addiction. However, no research has examined how the different components of alexithymia are associated with cognitive emotion regulation in the context of multi-strategy use in internet addiction. The current study aimed to investigate the relation between alexithymia and cognitive emotion regulation in individuals with internet addiction via network analysis. Participants included 560 students with Young’s Internet Addiction Test scores greater than 50 points; they were also asked to complete the Toronto Alexithymia Scale (TAS-20) and the Cognitive Emotion Regulation Questionnaire (CERQ). The results revealed two bridge nodes emerging within the combined alexithymia and cognitive emotion regulation network model: “catastrophizing” and “externally oriented thoughts.” These findings indicate a more specific relation between alexithymia and cognitive emotion regulation and provide empirical evidence for targeted prevention and targeted interventions for internet addiction.
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Affiliation(s)
- Hongge Luo
- School of Public Health, North China University of Science and Technology, Tangshan, China
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Xun Gong
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Xiaomei Chen
- The Department of Marxist Teaching, North China University of Science and Technology, Tangshan, China
| | - Jianing Hu
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Xiaoyi Wang
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Yekun Sun
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Jiating Li
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Shaobo Lv
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Xiujun Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, China
- *Correspondence: Xiujun Zhang,
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12
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Chan J, Becerra R, Weinborn M, Preece D. Assessing Alexithymia across Asian and Western Cultures: Psychometric Properties of the Perth Alexithymia Questionnaire and Toronto Alexithymia Scale-20 in Singaporean and Australian Samples. J Pers Assess 2022; 105:396-412. [PMID: 35900047 DOI: 10.1080/00223891.2022.2095641] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Alexithymia refers to difficulties identifying feelings (DIF), describing feelings (DDF), and externally orientated thinking (EOT). Originally conceptualized by American psychiatrists, some researchers have since questioned the validity and application of this construct in Asian cultures. However, to date, there is little empirical work formally assessing the invariance of alexithymia across Asian and Western cultures. The present study aimed to help address this gap, by examining the psychometric properties and measurement invariance of two alexithymia measures, the Perth Alexithymia Questionnaire (PAQ) and Toronto Alexithymia Scale-20 (TAS-20), across samples from Singapore (n = 434) or Australia (n = 489). The same theoretically congruent factor structure was supported across both samples; this structure was fully invariant across samples for the PAQ, and partially invariant for the TAS-20. Both measures had good internal consistency and concurrent validity across samples, except the TAS-20 EOT subscale which had low internal consistency and factor loadings in both samples. The Singaporean sample reported higher DIF and DDF for positive emotions than the Australian sample. Overall, our results support the cross-cultural validity and application of the alexithymia construct. The PAQ and TAS-20 both appear to have good utility in this respect, though the PAQ may provide a more detailed facet-level profile.
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Affiliation(s)
- Joan Chan
- University of Western Australia, Perth, Australia
| | | | | | - David Preece
- University of Western Australia, Perth, Australia.,School of Psychology, Curtin University, Perth, Australia
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13
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Kliem S, Zenger M, Beller J, Brähler E, Ernst M. [Psychometric Properties of a Short Alexithymia Scale (SAS-3) in the German General Population]. Psychother Psychosom Med Psychol 2022; 72:329-334. [PMID: 35584777 DOI: 10.1055/a-1785-5644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The literature on alexithymia has multiplied in recent decades as the construct has important implications for mental health. The so far used inventories are of limited use in epidemiological research, primary care, and other clinical settings where time and effort are important factors in assessment. Based on items of the authorized German version of the Toronto Alexithymia Scale, the aim of this study was to develop an ultra-short questionnaire for a condensed and unidimensional assessment of alexithymia. METHODS Criteria for the abbreviated scale were: (a) one-dimensionality (necessary to calculate a global score), (b) one item from each of the originally postulated dimensions, and (c) no reverse-coded items (to avoid method artifacts). Data were drawn from two nationwide representative population surveys in Germany: a survey conducted in 1996 to develop the SAS-3 (N=2.047); and a survey conducted in 2013 (N=2.508) for the evaluation and calculation of SAS-3 percentiles. RESULTS Reasonable correlations between the SAS-3 and the PHQ-2, the GAD-2, and the GBB-8 were observed. Based on a confirmatory factor analysis, the one-dimensionality of the SAS-3 could be confirmed, achieving very good fit indices. An additional invariance analysis regarding gender and different age groups resulted in (partial) strict invariance for the different multi-group analyses. Percentile ranks for SAS-3 sum score are reported stratified by gender and by age groups. CONCLUSIONS The SAS-3 appears to be suitable in epidemiological research and other instances requiring an economical assessment of alexithymia.
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Affiliation(s)
- Sören Kliem
- Fachbereich für Sozialwissenschaften, Ernst-Abbe-Hochschule Jena, Jena, Germany
| | - Markus Zenger
- Fachbereich Angewandte Humanwissenschaften, Hochschule Magdeburg-Stendal, Magdeburg, Germany.,Integriertes Forschungs- und Behandlungszentrum Adipositaserkrankungen, Forschungsbereich Verhaltensmedizin, Universitätsmedizin Lepzig, Leipzig, Germany
| | - Johannes Beller
- Medizinische Soziologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Elmar Brähler
- Psychosomatische Medizin und Psychotherapie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Mareike Ernst
- Psychosomatische Medizin und Psychotherapie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Germany
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14
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Carta MG, Sancassiani F, Bina D, Licciardi M, Cossu G, Nardi AE, Meloni L, Montisci R. Alexithymia is a determinant of early death in the long-term course of post-myocardial infarction. J Public Health Res 2022; 11. [PMID: 35299586 PMCID: PMC8973209 DOI: 10.4081/jphr.2022.2803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 01/10/2022] [Indexed: 11/23/2022] Open
Abstract
Among people with ST-segment elevation myocardial infarction (STEMI), high alexithymia was associated with delay to hospital arrival. High alexithymia could be a determinant of early death in the long term after STEMI. People with STEMI who participated in a survey in 2011, was tested about the state of life in 2021. The sample was divided into two cohorts (cut-off: TAS- 20≥61 in 2011). The relationship between possible death occurred and having high alexithymia was calculated by comparing the mortality after 10 years in the two cohorts through the Cox’ proportional hazard model. Status in life was verified on 39.3% of the sample. No differences were found regarding age, sex, high alexithymia between individuals on whom it was possible to verify the state in life and in whose it was not. In 2021, among people having high alexithymia in 2011, a higher risk of early death was found (RR=5.75, CI 95% 1.116-29.637). Significance for public health Among people with ST-segment elevation myocardial infarction (STEMI), high alexithymia is associated with delay to hospital arrival. High alexithymia could be a determinant of early death in the long term after STEMI. Although the results of this study are preliminary, they highlight a relevant prognostic factor, alexithymia, in relation to the long-term course of post-myocardial infarction, condition responsible for more than 7 million deaths each year. As known, alexithymia may be improved with adequate interventions of recognized efficacy. This means that a significant proportion of early deaths among people with previous STEMI could be avoided through an adequate intervention on alexithymia.
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Affiliation(s)
| | | | - Davide Bina
- Department of Medical Sciences and Public Health, University of Cagliari.
| | - Marco Licciardi
- Department of Medical Sciences and Public Health, University of Cagliari.
| | - Giulia Cossu
- Department of Medical Sciences and Public Health, University of Cagliari.
| | - Antonio Egidio Nardi
- Laboratory of Panic and Respiration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), Rio de Janeiro.
| | - Luigi Meloni
- Department of Medical Sciences and Public Health, University of Cagliari.
| | - Roberta Montisci
- Department of Medical Sciences and Public Health, University of Cagliari.
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15
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Luo H, Zhao Y, Hong J, Wang H, Zhang X, Tan S. Effect of Alexithymia on Internet Addiction Among College Students: The Mediating Role of Metacognition Beliefs. Front Psychol 2022; 12:788458. [PMID: 35082726 PMCID: PMC8784415 DOI: 10.3389/fpsyg.2021.788458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/30/2021] [Indexed: 12/25/2022] Open
Abstract
Background: Previous studies have found that alexithymia plays an important role in the pathogenesis of Internet addiction. However, the effect of alexithymia on both metacognition and Internet addiction has yet to be examined. Methods: The Toronto Alexithymia Scale, Metacognition Questionnaire, and Internet Addiction Test were used to assess a sample of 356 college students. A parallel mediator effect analysis was applied to test the hypothesis that metacognition mediates the relationship between alexithymia and Internet addiction. Results: The parallel multiple mediator models showed that alexithymia predicted the five dimensions of metacognition and Internet addiction, and that three dimensions-cognitive confidence, positive beliefs about worry, and the need to control thoughts-partially mediated this relationship. Conclusion: Alexithymia could directly and indirectly predict Internet addiction via metacognition.
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Affiliation(s)
- Hongge Luo
- School of Public Health, North China University of Science and Technology, Tangshan, China
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Yanli Zhao
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, China
| | - Jiangyue Hong
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, China
| | - Hong Wang
- College of Psychology, North China University of Science and Technology, Tangshan, China
| | - Xiujun Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Shuping Tan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing, China
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16
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Goerlich KS, Votinov M. Hormonal abnormalities in alexithymia. Front Psychiatry 2022; 13:1070066. [PMID: 36699481 PMCID: PMC9868825 DOI: 10.3389/fpsyt.2022.1070066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/19/2022] [Indexed: 01/11/2023] Open
Abstract
Alexithymia is a personality trait characterized by difficulties in emotion recognition and regulation that is associated with deficits in social cognition. High alexithymia levels are considered a transdiagnostic risk factor for a range of psychiatric and medical conditions, including depression, anxiety, and autism. Hormones are known to affect social-emotional cognition and behavior in humans, including the neuropeptides oxytocin and vasopressin, the steroid hormones testosterone and estradiol, the stress hormone cortisol as well as thyroid hormones. However, few studies have investigated hormonal effects on alexithymia and on alexithymia-related impairments in emotion regulation and reactivity, stress response, and social cognition. Here, we provide a brief overview of the evidence linking alexithymia to abnormalities in hormone levels, particularly with regard to cortisol and oxytocin, for which most evidence exists, and to thyroid hormones. We address the current lack of research on the influence of sex hormones on alexithymia and alexithymia-related deficits, and lastly provide future directions for research on associations between hormonal abnormalities and deficits in emotion regulation and social cognition associated with alexithymia.
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Affiliation(s)
- Katharina S Goerlich
- Cognitive Neuroscience Center, Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Mikhail Votinov
- Institute of Neuroscience and Medicine 10, Research Centre Jülich, Jülich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany
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17
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Gaggero G, Bizzego A, Dellantonio S, Pastore L, Lim M, Esposito G. Clarifying the relationship between alexithymia and subjective interoception. PLoS One 2021; 16:e0261126. [PMID: 34898643 PMCID: PMC8668127 DOI: 10.1371/journal.pone.0261126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 11/25/2021] [Indexed: 12/15/2022] Open
Abstract
The long-standing hypothesis that emotions rely on bodily states is back in the spotlight. This has led some researchers to suggest that alexithymia, a personality construct characterized by altered emotional awareness, reflects a general deficit in interoception. However, tests of this hypothesis have relied on heterogeneous assessment methods, leading to inconsistent results. To shed some light on this issue, we administered a battery of self-report questionnaires of interoception and alexithymia to three samples from Italy, the U.S., and Singapore (N = 814). Correlation and machine learning analyses showed that alexithymia was associated with deficits in both subjective interoceptive accuracy and attention. Alexithymics' interoceptive deficits were primarily related to difficulty identifying and describing feelings. Interoception showed a weaker association with externally-oriented thinking as operationalized by the Toronto Alexithymia Scale (TAS-20) and no association with the affective dimension of alexithymia later introduced by the Bermond-Vorst Alexithymia Questionnaire (BVAQ). We discuss our results with reference to the theoretical and psychometric differences between these two measures of alexithymia and their shortcomings. Overall, our results support the view that interoceptive deficits are a core component of alexithymia, although the latter cannot be reduced to the former.
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Affiliation(s)
- Giulia Gaggero
- Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
| | - Andrea Bizzego
- Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
| | - Sara Dellantonio
- Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
| | - Luigi Pastore
- Department of Education, Psychology, Communication, University of Bari, Bari, Italy
| | - Mengyu Lim
- Psychology Program, School of Social Sciences, Nanyang Technological University, Singapore, Singapore
| | - Gianluca Esposito
- Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy
- Psychology Program, School of Social Sciences, Nanyang Technological University, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
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18
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Pedersen G, Normann-Eide E, Eikenaes IUM, Kvarstein EH, Wilberg T. Psychometric evaluation of the Norwegian Toronto Alexithymia Scale (TAS-20) in a multisite clinical sample of patients with personality disorders and personality problems. J Clin Psychol 2021; 78:1118-1136. [PMID: 34716595 DOI: 10.1002/jclp.23270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 10/17/2021] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Psychometric properties of 20-item Toronto Alexithymia Scale (TAS-20) have been widely analyzed, but the validity and psychometric qualities of the TAS-20 in populations with personality disorders are still poorly understood. The aim of the current study was to analyze the factor structure and validity of TAS-20. METHOD Data were extracted from a multisite clinical sample of patients with personality disorders or personality-related problems referred to specialist mental health services in Norway. RESULTS With one exception, TAS-20 revealed acceptable psychometric properties. Variations of TAS-20 are associated with other clinical measures of distress and severity. Anxiety disorders, borderline, and avoidant personality disorders were all highly related to levels of TAS-20. The TAS-20 also revealed unique variance not accounted for by subjective distress, symptom disorders, or dysfunctional personality traits. CONCLUSION The TAS-20 is a relevant instrument for use in assessment of personality disorders, but one subscale should be improved.
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Affiliation(s)
- Geir Pedersen
- Network for Personality Disorders, Section for Personality Psychiatry and Specialized Treatments, Department for National and Regional Functions, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.,The Norwegian Centre of Mental Disorders Research (NORMENT), Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Eivind Normann-Eide
- National Advisory Unit for Personality Psychiatry, Section for Personality Psychiatry and Specialized Treatments, Department for National and Regional Functions, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Ingeborg Ulltveit-Moe Eikenaes
- National Advisory Unit for Personality Psychiatry, Section for Personality Psychiatry and Specialized Treatments, Department for National and Regional Functions, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Elfrida Hartveit Kvarstein
- Section for Personality Psychiatry and Specialized Treatments, Department for National and Regional Functions, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Theresa Wilberg
- Department of Research and Innovation, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
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19
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Williams ZJ, Gotham KO. Improving the measurement of alexithymia in autistic adults: a psychometric investigation of the 20-item Toronto Alexithymia Scale and generation of a general alexithymia factor score using item response theory. Mol Autism 2021; 12:56. [PMID: 34376227 PMCID: PMC8353782 DOI: 10.1186/s13229-021-00463-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 07/31/2021] [Indexed: 03/21/2023] Open
Abstract
BACKGROUND Alexithymia, a personality trait characterized by difficulties interpreting emotional states, is commonly elevated in autistic adults, and a growing body of literature suggests that this trait underlies several cognitive and emotional differences previously attributed to autism. Although questionnaires such as the 20-item Toronto Alexithymia Scale (TAS-20) are frequently used to measure alexithymia in the autistic population, few studies have investigated the psychometric properties of these questionnaires in autistic adults, including whether differential item functioning (I-DIF) exists between autistic and general population adults. METHODS This study is a revised version of a previous article that was retracted due to copyright concerns (Williams and Gotham in Mol Autism 12:1-40). We conducted an in-depth psychometric analysis of the TAS-20 in a large sample of 743 cognitively able autistic adults recruited from the Simons Foundation SPARK participant pool and 721 general population controls enrolled in a large international psychological study. The factor structure of the TAS-20 was examined using confirmatory factor analysis, and item response theory was used to generate a subset of the items that were strong indicators of a "general alexithymia" factor. Correlations between alexithymia and other clinical outcomes were used to assess the nomological validity of the new alexithymia score in the SPARK sample. RESULTS The TAS-20 did not exhibit adequate model fit in either the autistic or general population samples. Empirically driven item reduction was undertaken, resulting in an 8-item general alexithymia factor score (GAFS-8, with "TAS" no longer referenced due to copyright) with sound psychometric properties and practically ignorable I-DIF between diagnostic groups. Correlational analyses indicated that GAFS-8 scores, as derived from the TAS-20, meaningfully predict autistic trait levels, repetitive behaviors, and depression symptoms, even after controlling for trait neuroticism. The GAFS-8 also presented no meaningful decrement in nomological validity over the full TAS-20 in autistic participants. LIMITATIONS Limitations of the current study include a sample of autistic adults that was majority female, later diagnosed, and well educated; clinical and control groups drawn from different studies with variable measures; only 16 of the TAS-20 items being administered to the non-autistic sample; and an inability to test several other important psychometric characteristics of the GAFS-8, including sensitivity to change and I-DIF across multiple administrations. CONCLUSIONS These results indicate the potential of the GAFS-8 to robustly measure alexithymia in both autistic and non-autistic adults. A free online score calculator has been created to facilitate the use of norm-referenced GAFS-8 latent trait scores in research applications (available at https://asdmeasures.shinyapps.io/alexithymia ).
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Affiliation(s)
- Zachary J. Williams
- Medical Scientist Training Program, Vanderbilt University School of Medicine, 1215 21st Avenue South, Medical Center East, Room 8310, Nashville, TN 37232 USA
- Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN USA
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN USA
- Frist Center for Autism and Innovation, Vanderbilt University, Nashville, TN USA
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20
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Williams ZJ, Gotham KO. Improving the measurement of alexithymia in autistic adults: a psychometric investigation and refinement of the twenty-item Toronto Alexithymia Scale. Mol Autism 2021; 12:20. [PMID: 33653400 PMCID: PMC7971146 DOI: 10.1186/s13229-021-00427-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 02/19/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Alexithymia, a personality trait characterized by difficulties interpreting one's own emotional states, is commonly elevated in autistic adults, and a growing body of literature suggests that this trait underlies a number of cognitive and emotional differences previously attributed to autism, such as difficulties in facial emotion recognition and reduced empathy. Although questionnaires such as the twenty-item Toronto Alexithymia Scale (TAS-20) are frequently used to measure alexithymia in the autistic population, few studies have attempted to determine the psychometric properties of these questionnaires in autistic adults, including whether differential item functioning (I-DIF) exists between autistic and general population adults. METHODS We conducted an in-depth psychometric analysis of the TAS-20 in a large sample of 743 verbal autistic adults recruited from the Simons Foundation SPARK participant pool and 721 general population controls enrolled in a large international psychological study (the Human Penguin Project). The factor structure of the TAS-20 was examined using confirmatory factor analysis, and item response theory was used to further refine the scale based on local model misfit and I-DIF between the groups. Correlations between alexithymia and other clinical outcomes such as autistic traits, anxiety, and quality-of-life were used to assess the nomological validity of the revised alexithymia scale in the SPARK sample. RESULTS The TAS-20 did not exhibit adequate global model fit in either the autistic or general population samples. Empirically driven item reduction was undertaken, resulting in an eight-item unidimensional scale (TAS-8) with sound psychometric properties and practically ignorable I-DIF between diagnostic groups. Correlational analyses indicated that TAS-8 scores meaningfully predict autistic trait levels, anxiety and depression symptoms, and quality of life, even after controlling for trait neuroticism. LIMITATIONS Limitations of the current study include a sample of autistic adults that was overwhelmingly female, later-diagnosed, and well-educated; clinical and control groups drawn from different studies with variable measures; and an inability to test several other important psychometric characteristics of the TAS-8, including sensitivity to change and I-DIF across multiple administrations. CONCLUSIONS These results indicate the potential of the TAS-8 as a psychometrically robust tool to measure alexithymia in both autistic and non-autistic adults. A free online score calculator has been created to facilitate the use of norm-referenced TAS-8 latent trait scores in research applications (available at http://asdmeasures.shinyapps.io/TAS8_Score ).
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Affiliation(s)
- Zachary J. Williams
- Medical Scientist Training Program, Vanderbilt University School of Medicine, Nashville, TN USA
- Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, 1215 21st Avenue South, Medical Center East, Room 8310, Nashville, TN 37232 USA
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN USA
- Frist Center for Autism and Innovation, Vanderbilt University, Nashville, TN USA
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21
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Nunes da Silva A. Developing Emotional Skills and the Therapeutic Alliance in Clients with Alexithymia: Intervention Guidelines. Psychopathology 2021; 54:282-290. [PMID: 34749373 DOI: 10.1159/000519786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 09/17/2021] [Indexed: 11/19/2022]
Abstract
Despite being a longstanding and well-established concept, alexithymia is unfamiliar for many clinicians. This article aimed to address the alexithymia concept from a clinical perspective based on a review of the research on alexithymia intervention. Several strategies are proposed to help clinicians better work with alexithymic clients in psychotherapy. Alexithymia assessment, its impact on the therapeutic alliance, and the difficulties in emotional tasks are highlighted points. Considering alexithymia will inform clinicians' current diagnosis and conceptualization and provide specific targets and venues for intervention, increasing the effectiveness of psychotherapy.
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