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Culbreth AJ, Moran EK, Mahaphanit W, Erickson MA, Boudewyn MA, Frank MJ, Barch DM, MacDonald AW, Ragland JD, Luck SJ, Silverstein SM, Carter CS, Gold JM. A Transdiagnostic Study of Effort-Cost Decision-Making in Psychotic and Mood Disorders. Schizophr Bull 2024; 50:339-348. [PMID: 37901911 PMCID: PMC10919776 DOI: 10.1093/schbul/sbad155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
BACKGROUND Research suggests that effort-cost decision-making (ECDM), the estimation of work required to obtain reward, may be a relevant framework for understanding motivational impairment in psychotic and mood pathology. Specifically, research has suggested that people with psychotic and mood pathology experience effort as more costly than controls, and thus pursue effortful goals less frequently. This study examined ECDM across psychotic and mood pathology. HYPOTHESIS We hypothesized that patient groups would show reduced willingness to expend effort compared to controls. STUDY DESIGN People with schizophrenia (N = 33), schizoaffective disorder (N = 28), bipolar disorder (N = 39), major depressive disorder (N = 40), and controls (N = 70) completed a physical ECDM task. Participants decided between completing a low-effort or high-effort option for small or larger rewards, respectively. Reward magnitude, reward probability, and effort magnitude varied trial-by-trial. Data were analyzed using standard and hierarchical logistic regression analyses to assess the subject-specific contribution of various factors to choice. Negative symptoms were measured with a clinician-rated interview. STUDY RESULTS There was a significant effect of group, driven by reduced choice of high-effort options in schizophrenia. Hierarchical logistic regression revealed that reduced choice of high-effort options in schizophrenia was driven by weaker contributions of probability information. Use of reward information was inversely associated with motivational impairment in schizophrenia. Surprisingly, individuals with major depressive disorder and bipolar disorder did not differ from controls. CONCLUSIONS Our results provide support for ECDM deficits in schizophrenia. Additionally, differences between groups in ECDM suggest a seemingly similar behavioral phenotype, reduced motivation, could arise from disparate mechanisms.
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Affiliation(s)
- Adam J Culbreth
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland, School of Medicine, Baltimore, USA
| | - Erin K Moran
- Department of Psychological and Brain Sciences, Washington University in St. Louis, Saint Louis, USA
| | - Wasita Mahaphanit
- Department of Psychological and Brain Sciences, Dartmouth College, Hanover, USA
| | - Molly A Erickson
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, USA
| | - Megan A Boudewyn
- Department of Psychology, University of California, Santa Cruz, USA
| | - Michael J Frank
- Department of Cognitive, Linguistics, and Psychological Sciences, Brown University, Providence, USA
| | - Deanna M Barch
- Department of Psychological and Brain Sciences, Washington University in St. Louis, Saint Louis, USA
- Department of Psychiatry, Washington University School of Medicine, St Louis, USA
- Department of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, USA
| | | | - J Daniel Ragland
- Department of Psychiatry, University of California, Davis, School of Medicine, Davis, USA
| | - Steven J Luck
- Center for Mind and Brain, University of California, Davis, Davis, USA
| | - Steven M Silverstein
- Department of Psychiatry, University of Rochester Medical Center, Rochester, USA
| | - Cameron S Carter
- Department of Psychiatry, University of California, Davis, School of Medicine, Davis, USA
| | - James M Gold
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland, School of Medicine, Baltimore, USA
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Long J, Hull R. Conceptualizing a less paranoid schizophrenia. Philos Ethics Humanit Med 2023; 18:14. [PMID: 37936219 PMCID: PMC10631169 DOI: 10.1186/s13010-023-00142-8] [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] [Received: 04/03/2023] [Accepted: 10/11/2023] [Indexed: 11/09/2023] Open
Abstract
Schizophrenia stands as one of the most studied and storied disorders in the history of clinical psychology; however, it remains a nexus of conflicting and competing conceptualizations. Patients endure great stigma, poor treatment outcomes, and condemnatory prognosis. Current conceptualizations suffer from unstable categorical borders, heterogeneity in presentation, outcome and etiology, and holes in etiological models. Taken in aggregate, research and clinical experience indicate that the class of psychopathologies oriented toward schizophrenia are best understood as spectra of phenomenological, cognitive, and behavioral modalities. These apparently taxonomic expressions are rooted in normal human personality traits as described in both psychodynamic and Five Factor personality models, and more accurately represent explicable distress reactions to biopsychosocial stress and trauma. Current categorical approaches are internally hampered by axiomatic bias and systemic inertia rooted in the foundational history of psychological inquiry; however, when such axioms are schematically decentralized, convergent cross-disciplinary evidence outlines a more robust explanatory construct. By reconceptualizing these disorders under a dimensional and cybernetic model, the aforementioned issues of instability and inaccuracy may be resolved, while simultaneously opening avenues for both early detection and intervention, as well as for more targeted and effective treatment approaches.
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Affiliation(s)
- James Long
- Department of Psychology, Chestnut Hill College, 7113 Valley Avenue, Philadelphia, PA, 19128, USA.
| | - Rachel Hull
- Chestnut Hill College Department of Professional Psychology, 9601 Germantown Avenue, Philadelphia, PA, 19118, USA
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Dalloul N, Moran EK, Gold JM, Carter CS, MacDonald AW, Ragland JD, Silverstein SM, Luck SJ, Barch DM. Transdiagnostic Predictors of Everyday Functioning: Examining the Relationships of Depression and Reinforcement Learning. Schizophr Bull 2023; 49:1281-1293. [PMID: 37382553 PMCID: PMC10483466 DOI: 10.1093/schbul/sbad095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
BACKGROUND AND HYPOTHESIS Impairments in function (ie, the ability to independently accomplish daily tasks) have been established in psychotic disorders. Identifying factors that contribute to these deficits is essential to developing effective interventions. The current study had several goals: examine potential differential relationships across domains of neurocognition, assess whether reinforcement learning is related to function, identify if predictors of function are transdiagnostic, determine whether depression and positive symptoms contribute to function, and to explore whether the modality of assessment impacts observed relationships. STUDY DESIGN Data from 274 participants were examined with schizophrenia/schizoaffective disorder (SZ; n = 195) and bipolar disorder (BD; n = 79). To reduce dimensionality, a PCA was completed on neurocognitive tasks which resulted in 3 components. These components and clinical interview data were used to investigate predictors of functional domains across measures of function (self- and informant-report SLOF and UPSA). RESULTS Two components, working memory/processing speed/episodic memory (βs = 0.18-0.42), and negative/positive reinforcement learning (β = -0.04), predicted different functional domains. Predictors of function were largely transdiagnostic with two exceptions: reinforcement learning had a positive association with self-reported interpersonal relationships for SZ and a negative association for BD (β = 0.34), and the negative association between positive symptoms and self-reported social acceptability was stronger for BD than for SZ (β = 0.93). Depression robustly predicted self-reported but not informant-reported function, and anhedonia predicted all domains of informant-reported function. CONCLUSIONS These findings imply that reinforcement learning may differentially relate to function across disorders, traditional domains of neurocognition can be effective transdiagnostic targets for interventions, and positive symptoms and depression play a critical role in self-perceived functional impairments.
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Affiliation(s)
- Nada Dalloul
- Department of Psychological & Brain Sciences, Washington University, St. Louis, MO, USA
| | - Erin K Moran
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
| | - James M Gold
- Department of Psychiatry, Maryland Psychiatric Research Center, Baltimore, MD, USA
| | - Cameron S Carter
- Department of Psychiatry, University of California, Davis, CA, USA
| | - Angus W MacDonald
- Department of Psychology, University of Minnesota, Minneapolis, MN, USA
| | - J Daniel Ragland
- Department of Psychiatry, University of California, Davis, CA, USA
| | | | - Steven J Luck
- Department of Psychology, University of California, Davis, CA, USA
| | - Deanna M Barch
- Department of Psychological & Brain Sciences, Washington University, St. Louis, MO, USA
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
- Department of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA
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Culbreth AJ, Dershwitz SD, Barch DM, Moran EK. Associations Between Cognitive and Physical Effort-Based Decision Making in People With Schizophrenia and Healthy Control Subjects. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2023; 8:695-702. [PMID: 36796513 PMCID: PMC10330111 DOI: 10.1016/j.bpsc.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/09/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND Effort can take a variety of forms including physical (e.g., button pressing) and cognitive (e.g., working memory tasks). Few studies have examined whether individual differences in willingness to expend effort are similar or different across modalities. METHODS We recruited 30 individuals with schizophrenia and 44 healthy control subjects to complete 2 effort-cost decision-making tasks: the Effort Expenditure for Rewards Task (physical effort) and the cognitive effort discounting task (cognitive effort). RESULTS Willingness to expend cognitive and physical effort was positively associated for both individuals with schizophrenia and control subjects. Further, we found that individual differences in motivation and pleasure dimension of negative symptoms modulated the association between physical and cognitive effort. Specifically, participants with lower motivation and pleasure scores, irrespective of group status, showed stronger associations between task measures of cognitive and physical effort-cost decision making. CONCLUSIONS These results suggest a generalized deficit across effort modalities in individuals with schizophrenia. Further, reductions in motivation and pleasure may impact effort-cost decision making in a domain-general manner.
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Affiliation(s)
- Adam J Culbreth
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland, School of Medicine, Baltimore, Maryland.
| | - Sally D Dershwitz
- Department of Psychological & Brain Sciences, Washington University in St. Louis, St. Louis, Missouri
| | - Deanna M Barch
- Department of Psychological & Brain Sciences, Washington University in St. Louis, St. Louis, Missouri; Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri; Department of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri
| | - Erin K Moran
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
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Vinogradov S, Meyer-Kalos P. Treating Pathologies of the Will. Am J Psychiatry 2023; 180:331-333. [PMID: 37122273 PMCID: PMC10324287 DOI: 10.1176/appi.ajp.20230182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Affiliation(s)
- Sophia Vinogradov
- Department of Psychiatry and Behavioral Science, University of Minnesota Medical School, Minneapolis
| | - Piper Meyer-Kalos
- Department of Psychiatry and Behavioral Science, University of Minnesota Medical School, Minneapolis
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Strauss GP, Bartolomeo LA, Luther L. Reduced willingness to expend effort for rewards is associated with risk for conversion and negative symptom severity in youth at clinical high-risk for psychosis. Psychol Med 2023; 53:714-721. [PMID: 34120660 DOI: 10.1017/s003329172100204x] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Schizophrenia (SZ) is typically preceded by a prodromal (i.e. pre-illness) period characterized by attenuated positive symptoms and declining functional outcome. Negative symptoms are prominent among individuals at clinical high-risk (CHR) for psychosis (i.e. those with prodromal syndromes) and predictive of conversion to illness. Mechanisms underlying negative symptoms are unclear in the CHR population. METHODS The current study evaluated whether CHR participants demonstrated deficits in the willingness to expend effort for rewards and whether these impairments are associated with negative symptoms and greater risk for conversion. Participants included 44 CHR participants and 32 healthy controls (CN) who completed the Effort Expenditure for Reward Task (EEfRT). RESULTS Compared to CN, CHR participants displayed reduced likelihood of exerting high effort for high probability and magnitude rewards. Among CHR participants, reduced effort expenditure was associated with greater negative symptom severity and greater probability of conversion to a psychotic disorder on a cross-sectional risk calculator. CONCLUSIONS Findings suggest that effort-cost computation is a marker of illness liability and a transphasic mechanism underlying negative symptoms in the SZ spectrum.
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Affiliation(s)
| | | | - Lauren Luther
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
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Chu RST, Tong CCHY, Wong CSM, Chang WC, Tang WCY, Chan CCL, Lui SSY, Hui LM, Suen YN, Chan KW, Lee HM, Chen EYH. Effort-based decision making in schizotypy and its relationship with amotivation and psychosocial functioning. Front Psychiatry 2023; 14:1123046. [PMID: 36873206 PMCID: PMC9978481 DOI: 10.3389/fpsyt.2023.1123046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/25/2023] [Indexed: 02/18/2023] Open
Abstract
INTRODUCTION Suboptimal effort-based decision-making with reduced willingness to expend effort for high-probability/high-value reward is observed in schizophrenia patients and is related to diminished motivation, but is understudied in schizotypy. This study aimed to examine effort-allocation in schizotypy individuals and its association with amotivation and psychosocial functioning. METHODS We recruited 40 schizotypy individuals and 40 demographically-matched healthy controls, based on Schizotypal Personality Questionnaire-Brief (SPQ-B) score (top and bottom 10% SPQ-B scores, respectively), from 2400 young people aged 15-24 years participating a population-based mental health survey in Hong Kong and examined effort-allocation using the Effort Expenditure for Reward Task (EEfRT). Negative / amotivation symptoms and psychosocial functioning were assessed by the Brief Negative Symptom Scale (BNSS) and the Social Functioning and Occupational Assessment Scale (SOFAS), respectively. Schizotypy individuals were categorized into high-amotivation and low-amotivation groups based on a median-split of BNSS amotivation domain score. RESULTS Our results showed no main group effect (in either two or three-group comparison) on effort task performance. Three-group comparison analyses on selected EEfRT performance indices revealed that high-amotivation schizotypy individuals displayed significantly less increase in effortful options from low-value to high-value reward (reward-difference score) and from low-probability/low-value to high-probability/high-value reward (probability/reward-difference score) than low-amotivation individuals and controls. Correlation analyses demonstrated trend-wise significance between BNSS amotivation domain score and several EEfRT performance indices in schizotypy group. Schizotypy individuals with poorer psychosocial functioning tended to exhibit smaller probability/reward-difference score relative to other two groups. DISCUSSION Our findings indicate subtle effort-allocation abnormalities in schizotypy individuals with high levels of diminished motivation, and suggest the link between laboratory-based effort-cost measures and real-world functional outcome.
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Affiliation(s)
- Ryan Sai Ting Chu
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Co Co Ho Yi Tong
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Corine Sau Man Wong
- LKS Faculty of Medicine, School of Public Health, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Wing Chung Chang
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Wesley Chor Yin Tang
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Charlotte Cheuk Lok Chan
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Simon S Y Lui
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Lai Ming Hui
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yi Nam Suen
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Kit Wa Chan
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Ho Ming Lee
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Eric Yu Hai Chen
- Department of Psychiatry, LKS Faculty of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
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Ince Guliyev E, Guloksuz S, Ucok A. Impaired Effort Allocation in Patients with Recent-Onset Schizophrenia and Its Relevance to Negative Symptoms Assessments and Persistent Negative Symptoms. J Clin Med 2022; 11:jcm11175060. [PMID: 36078990 PMCID: PMC9457458 DOI: 10.3390/jcm11175060] [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: 08/03/2022] [Revised: 08/24/2022] [Accepted: 08/27/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Our aims in this study were (i) to compare effort allocation capacity measured between patients with recent-onset schizophrenia (SCZ) and healthy controls (HCs), (ii) within the SCZ, to investigate the association of effort allocation capacity with negative symptoms (NS), and (iii) to compare this association with the type of NS scale used. (2) Methods: Thirty-one patients with SCZ and 30 HCs participated in the study. The NS was examined using an older-generation (Scale for the Assessment of Negative Symptoms, SANS), a newer-generation (Brief Negative Symptoms Scale, BNSS), and a self-rated (Self-evaluation of Negative Symptoms Scale, SNS) negative symptom scale, as well as longitudinally by using persistent NS (PNS) distinction. (3) Results: The SCZ group was less willing to expend effort in high/moderate-probability and -magnitude conditions but more in low-probability and -magnitude conditions. A general reduction in effort allocation capacity was also present. Patients with PNS were less likely to choose hard tasks than non-PNS patients. Clinician-rated scales correlated with 50% probability and moderate-reward-magnitude conditions. Correlations with the SNS were minimal. (4) Conclusions: Our findings suggest that patients with SCZ may show a general reduction in effort allocation capacity and make inefficient choices, although they are not totally reward-insensitive. The effects of NS on effort expenditure can be more pronounced when the rewarding stimulus is vague.
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Affiliation(s)
- Ezgi Ince Guliyev
- Department of Psychiatry, Erenkoy Training and Research Hospital for Mental and Neurological Diseases, University of Health Sciences, Istanbul 34736, Turkey
- Correspondence:
| | - Sinan Guloksuz
- Department of Psychiatry and Neuropsychology, Maastricht University Medical Centre, 6202 Maastricht, The Netherlands
- Department of Psychiatry, Yale School of Medicine, New Haven, CT 06510, USA
| | - Alp Ucok
- Department of Psychiatry, Faculty of Medicine, Istanbul University, Istanbul 34093, Turkey
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Getting a tool gives wings even in schizophrenia: underestimation of tool-related effort in a motor imagery task. NPJ SCHIZOPHRENIA 2021; 7:45. [PMID: 34526496 PMCID: PMC8443579 DOI: 10.1038/s41537-021-00175-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 08/06/2021] [Indexed: 11/08/2022]
Abstract
Humans frequently use tools to reduce action-related efforts. Interestingly, several studies have demonstrated that individuals had tool-related biases in terms of perceived effort reduction during motor imagery tasks, despite the lack of evidence of real benefits. Reduced effort allocation has been repeatedly found in schizophrenia, but it remains unknown how schizophrenia patients perceive tool-related benefits regarding effort. Twenty-four schizophrenia patients and twenty-four nonclinical participants were instructed to move the same quantities of objects with their hands or with a tool in both real and imagined situations. Imagined and real movement durations were recorded. Similarly to nonclinical participants, patients overestimated tool-related benefits and underestimated tool-related effort in terms of time when they mentally simulated a task requiring the use of a tool. No association between movement durations and psychotic symptoms was found. Our results open new perspectives on the issue of effort in schizophrenia.
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Yes, they can! Efficient physical effort mobilization according to task difficulty in schizophrenia. MOTIVATION AND EMOTION 2021. [DOI: 10.1007/s11031-021-09890-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rampino A, Falcone RM, Giannuzzi A, Masellis R, Antonucci LA, Torretta S. Strategies for Psychiatric Rehabilitation and their Cognitive Outcomes in Schizophrenia: Review of Last Five-year Studies. Clin Pract Epidemiol Ment Health 2021; 17:31-47. [PMID: 34249137 PMCID: PMC8227533 DOI: 10.2174/1745017902117010031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/15/2021] [Accepted: 02/27/2021] [Indexed: 01/04/2023]
Abstract
BACKGROUND Cognitive deficits are core features of Schizophrenia, showing poor response to antipsychotic treatment, therefore non-pharmacological rehabilitative approaches to such a symptom domain need to be identified. However, since not all patients with Schizophrenia exhibit the same cognitive impairment profile, individualized rehabilitative approaches should be set up. OBJECTIVES We explored the last five-year literature addressing the issue of cognitive dysfunction response to rehabilitative methodologies in Schizophrenia to identify possible predictors of response and individualized strategies to treat such a dysfunction. CONCLUSION A total of 76 studies were reviewed. Possible predictors of cognitive rehabilitation outcome were identified among patient-specific and approach-specific variables and a general overview of rehabilitative strategies used in the last five years has been depicted. Studies suggest the existence of multifaced and multi-domain variables that could significantly predict pro-cognitive effects of cognitive rehabilitation, which could also be useful for identifying individual-specific rehabilitation trajectories over time.An individualized rehabilitative approach to cognitive impairment in Schizophrenia is possible if taking into account both patient and approach specific predictors of outcomes.
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Affiliation(s)
- Antonio Rampino
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, 70124 Bari, Italy
- Azienda Ospedaliero-Universitaria Policlinico di Bari, 70124 Bari, Italy
| | - Rosa M. Falcone
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Arianna Giannuzzi
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Rita Masellis
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Linda A. Antonucci
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, 70124 Bari, Italy
- Department of Education, Psychology and Communication, University of Bari Aldo Moro, 70122 Bari, Italy
| | - Silvia Torretta
- Department of Basic Medical Sciences, Neuroscience, and Sense Organs, University of Bari Aldo Moro, 70124 Bari, Italy
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Chang WC, Westbrook A, Strauss GP, Chu AOK, Chong CSY, Siu CMW, Chan SKW, Lee EHM, Hui CLM, Suen YM, Lo TL, Chen EYH. Abnormal cognitive effort allocation and its association with amotivation in first-episode psychosis. Psychol Med 2020; 50:2599-2609. [PMID: 31576787 DOI: 10.1017/s0033291719002769] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Abnormal effort-based decision-making represents a potential mechanism underlying motivational deficits (amotivation) in psychotic disorders. Previous research identified effort allocation impairment in chronic schizophrenia and focused mostly on physical effort modality. No study has investigated cognitive effort allocation in first-episode psychosis (FEP). METHOD Cognitive effort allocation was examined in 40 FEP patients and 44 demographically-matched healthy controls, using Cognitive Effort-Discounting (COGED) paradigm which quantified participants' willingness to expend cognitive effort in terms of explicit, continuous discounting of monetary rewards based on parametrically-varied cognitive demands (levels N of N-back task). Relationship between reward-discounting and amotivation was investigated. Group differences in reward-magnitude and effort-cost sensitivity, and differential associations of these sensitivity indices with amotivation were explored. RESULTS Patients displayed significantly greater reward-discounting than controls. In particular, such discounting was most pronounced in patients with high levels of amotivation even when N-back performance and reward base amount were taken into consideration. Moreover, patients exhibited reduced reward-benefit sensitivity and effort-cost sensitivity relative to controls, and that decreased sensitivity to reward-benefit but not effort-cost was correlated with diminished motivation. Reward-discounting and sensitivity indices were generally unrelated to other symptom dimensions, antipsychotic dose and cognitive deficits. CONCLUSION This study provides the first evidence of cognitive effort-based decision-making impairment in FEP, and indicates that decreased effort expenditure is associated with amotivation. Our findings further suggest that abnormal effort allocation and amotivation might primarily be related to blunted reward valuation. Prospective research is required to clarify the utility of effort-based measures in predicting amotivation and functional outcome in FEP.
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Affiliation(s)
- W C Chang
- Department of Psychiatry, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong
| | - A Westbrook
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen 6525 EN, The Netherlands
- Department of Cognitive, Linguistics, and Psychological Sciences, Brown University, Providence, RI02906, USA
| | - G P Strauss
- Department of Psychology, University of Georgia, Athens, GA30602, USA
| | - A O K Chu
- Department of Psychiatry, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
| | - C S Y Chong
- Department of Psychiatry, Kwai Chung Hospital, Hong Kong
| | - C M W Siu
- Department of Psychiatry, Kwai Chung Hospital, Hong Kong
| | - S K W Chan
- Department of Psychiatry, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong
| | - E H M Lee
- Department of Psychiatry, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
| | - C L M Hui
- Department of Psychiatry, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
| | - Y M Suen
- Department of Psychiatry, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
| | - T L Lo
- Department of Psychiatry, Kwai Chung Hospital, Hong Kong
| | - E Y H Chen
- Department of Psychiatry, The University of Hong Kong, Queen Mary Hospital, Pok Fu Lam, Hong Kong
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong
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Choi WT, Yu DK, Wong T, Lantta T, Yang M, Välimäki M. Habits and Attitudes of Video Gaming and Information Technology Use in People with Schizophrenia: Cross-Sectional Survey. J Med Internet Res 2020; 22:e14865. [PMID: 32459646 PMCID: PMC7407262 DOI: 10.2196/14865] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 03/25/2020] [Accepted: 05/14/2020] [Indexed: 12/16/2022] Open
Abstract
Background Information technology and video gaming have potential advantages in the treatment of schizophrenia. However, information regarding the habits and attitudes related to internet use and video gaming in people with schizophrenia is limited. Objective The aim of this study was to explore the habits and attitudes regarding video gaming and information technology usage and their associated factors in people with schizophrenia in Hong Kong. Methods In this cross-sectional survey, service users with schizophrenia were recruited from 6 halfway hostels and 7 integrated centers for mental wellness in Hong Kong. A 79-item self-report questionnaire was utilized to explore the habits of internet use and video gaming in these people with schizophrenia. The attitude toward video gaming was assessed using the Gaming Attitudes, Motivations, and Experiences Scales. Of the 148 individuals in a convenience sample who were invited to participate in this study, 110 willingly participated (a response rate of 74.3%). The data were analyzed using descriptive statistics, a two-tailed independent t test, Pearson correlation, and principal analysis with 3 methods of rotation (varimax, equimax, and promax). Results Most participants (100/110, 90.9%) had access to the internet and half of them (54/110, 49.1%) used the internet daily mostly to watch videos (66/110, 60.0%) or read news or books, etc (42/110, 38.2%). One-third of the participants (36/110, 32.7%) used the internet to play web-based games, and most of them (88/110, 80.0%) had played a video game in the past year. The most favorable gaming platforms were cellular phones (43/88, 49%) followed by computers (19/88, 22%) and arcade cabinets (6/88, 7%). The most favorable game genre was action games (34/145, 23.4%). Those who had a bachelor’s degree or higher scored lower in social interaction than those with a lower education level (P=.03). Those who played video games daily scored higher in the category of story than those who did not play daily (t86=2.03, P=.05). The most popular gaming category was autonomy and the least popular categories were violent catharsis and violent reward. Two motives, “social playing” and “evasive playing,” were formed to describe the characteristics of playing video games. Conclusions Our data showed a high internet utilization rate among people with schizophrenia in Hong Kong. Only a few of them used the internet to search for health-related information. Our study also exemplified the unique habits of gaming among the participants. Health care professionals could utilize video games to engage people with schizophrenia and promote coping with stress and provide social skills training to such people with schizophrenia. Identification of the gaming attitudes can contribute to the development of serious games for the schizophrenic population. Further investigation is vital for the promotion of mental health through web-based platforms.
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Affiliation(s)
- William Th Choi
- School of Nursing, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
| | - Dan Ks Yu
- The Mental Health Association of Hong Kong, Hong Kong, Hong Kong
| | - Terry Wong
- New Life Psychiatric Rehabilitation Association, Hong Kong, Hong Kong
| | - Tella Lantta
- Department of Nursing Science, Faculty of Medicine, University of Turku, Turku, Finland
| | - Min Yang
- West China School of Public Health, Sichuan University Huaxi Medical Center, Sichuan, China.,Faculty of Health, Design and Art, Swinburne University of Technology, Melbourne, Australia
| | - Maritta Välimäki
- School of Nursing, The Hong Kong Polytechnic University, Hong Kong, Hong Kong.,Department of Nursing Science, Faculty of Medicine, University of Turku, Turku, Finland
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14
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Décombe A, Brunel L, Capdevielle D, Raffard S. Too much or too little? Exploring effort perception in schizophrenia within the framework of motivational intensity theory. Cogn Neuropsychiatry 2020; 25:312-327. [PMID: 32727294 DOI: 10.1080/13546805.2020.1798220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Introduction: To explain motivational difficulties in schizophrenia (SZ), attention has focused on the reward system and effort-based decision-making deficits. However, according to motivational intensity theory (MIT), effort is not directly determined by reward but by task difficulty. Moreover, no studies have examined the effort perception in the SZ. Therefore, this cross-sectional study compared effort perception in SZ group with healthy controls. Method: Task difficulty was manipulated by increasing the distance covered (from 8 to 48 metres). Walking speed, perceptions of difficulty and effort were assessed for all difficulty levels. Clinical and bodyweight variables were recorded. Results: As postulated by MIT, perceived effort and difficulty increased with task difficulty in both groups. Perceived effort and difficulty were higher in the SZ group. Perceptions of effort were positively correlated with BMI in SZ, but not with clinical variables. Importantly, although SZ patients perceived the task as more effortful, walking speed was similar between groups. Conclusions: Taken together, these results suggested that individuals with SZ perceived more strongly the effort and the difficulty of the task but could mobilise more effort to complete it. This observation may explain in part the decrease in engaging in physical demanding activities in daily life in SZ.
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Affiliation(s)
- Amandine Décombe
- Department of Psychology, Epsylon, Paul Valery University of Montpellier, Montpellier, France.,University Department of Psychiatry Adult, Hôpital la Colombière, University Hospital of Montpellier, Montpellier, France
| | - Lionel Brunel
- Department of Psychology, Epsylon, Paul Valery University of Montpellier, Montpellier, France
| | - Delphine Capdevielle
- University Department of Psychiatry Adult, Hôpital la Colombière, University Hospital of Montpellier, Montpellier, France.,Inserm, Unit 1061, Neuropsychiatry, Epidemiology and Clinical Research, University of Montpellier, Montpellier, France
| | - Stéphane Raffard
- Department of Psychology, Epsylon, Paul Valery University of Montpellier, Montpellier, France.,University Department of Psychiatry Adult, Hôpital la Colombière, University Hospital of Montpellier, Montpellier, France
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15
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Learning and Motivation for Rewards in Schizophrenia: Implications for Behavioral Rehabilitation. Curr Behav Neurosci Rep 2020. [DOI: 10.1007/s40473-020-00210-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Culbreth AJ, Moran EK, Kandala S, Westbrook A, Barch DM. Effort, avolition and motivational experience in schizophrenia: Analysis of behavioral and neuroimaging data with relationships to daily motivational experience. Clin Psychol Sci 2020; 8:555-568. [PMID: 33758684 PMCID: PMC7983405 DOI: 10.1177/2167702620901558] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Recent research suggests that schizophrenia is associated with reduced effort allocation. We examined willingness to expend effort, neural correlates of effort allocation, and the relationship of effort to daily motivational experience in schizophrenia. We recruited 28 individuals with schizophrenia and 30 controls to perform an effort task during fMRI. Individuals with schizophrenia also completed an ecological momentary assessment (EMA) protocol. Individuals with schizophrenia with high negative symptoms were less willing to expend effort for rewards. Daily EMA assessments of motivation were positively associated with effort allocation at a trend-level. Individuals with schizophrenia and controls displayed similar increases in BOLD activation in frontal, cingulate, parietal, and insular regions during effort-based decision-making. However, negative symptoms were associated with reduced BOLD activation in bilateral ventral striatum. These results replicate previous reports of reduced effort allocation in schizophrenia patients with severe negative symptoms, and provide evidence for the role of ventral striatum in effort impairments.
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Affiliation(s)
- Adam J Culbreth
- Department of Psychological & Brain Sciences, Washington University in St. Louis, St. Louis, MO 63130
| | - Erin K Moran
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110
| | - Sri Kandala
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110
| | - Andrew Westbrook
- Department of Cognitive, Linguistics, and Psychological Sciences, Brown University, Providence, RI 02906
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, 6525 EN Nijmegen, The Netherlands
| | - Deanna M Barch
- Department of Psychological & Brain Sciences, Washington University in St. Louis, St. Louis, MO 63130
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110
- Department of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110
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17
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Guessoum SB, Le Strat Y, Dubertret C, Mallet J. A transnosographic approach of negative symptoms pathophysiology in schizophrenia and depressive disorders. Prog Neuropsychopharmacol Biol Psychiatry 2020; 99:109862. [PMID: 31927053 DOI: 10.1016/j.pnpbp.2020.109862] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND Negative Symptoms (blunted affect, alogia, anhedonia, avolition and asociality) are observed in schizophrenia but also in depressive disorders. OBJECTIVE To gather cognitive, neuroanatomical, neurofunctional and neurobiological knowledge of negative symptoms in studies on schizophrenia, depressive disorder, and transnosographic studies. RESULTS Blunted affect in schizophrenia is characterized by amygdala hyperactivation and frontal hypoactivation, also found in depressive disorder. Mirror neurons, may be related to blunted affect in schizophrenia. Alogia may be related to cognitive dysfunction and basal ganglia area impairments in schizophrenia. Data surrounding alogia in depressive disorder is scarce; wider speech deficits are often studied instead. Consummatory Anhedonia may be less affected than Anticipatory Anhedonia in schizophrenia. Anhedonia is associated with reward impairments and altered striatal functions in both diagnostics. Amotivation is associated with Corticostriatal Hypoactivation in both disorders. Anhedonia and amotivation are transnosographically associated with dopamine dysregulation. Asociality may be related to oxytocin. CONCLUSION Pathophysiological hypotheses are specific to each dimension of negative symptoms and overlap across diagnostic boundaries, possibly underpinning the observed clinical continuum.
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Affiliation(s)
- Sélim Benjamin Guessoum
- AP-HP; Psychiatry Department, University Hospital Louis Mourier; University of Paris, 178 rue des Renouillers, 92700 Colombes, France; INSERM UMR1266, Institute of Psychiatry and Neurosciences of Paris (IPNP), 102-108 rue de la Santé, 75014 Paris, France
| | - Yann Le Strat
- AP-HP; Psychiatry Department, University Hospital Louis Mourier; University of Paris, 178 rue des Renouillers, 92700 Colombes, France; INSERM UMR1266, Institute of Psychiatry and Neurosciences of Paris (IPNP), 102-108 rue de la Santé, 75014 Paris, France.
| | - Caroline Dubertret
- AP-HP; Psychiatry Department, University Hospital Louis Mourier; University of Paris, 178 rue des Renouillers, 92700 Colombes, France; INSERM UMR1266, Institute of Psychiatry and Neurosciences of Paris (IPNP), 102-108 rue de la Santé, 75014 Paris, France.
| | - Jasmina Mallet
- AP-HP; Psychiatry Department, University Hospital Louis Mourier; University of Paris, 178 rue des Renouillers, 92700 Colombes, France; INSERM UMR1266, Institute of Psychiatry and Neurosciences of Paris (IPNP), 102-108 rue de la Santé, 75014 Paris, France.
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18
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Chang WC, Chu AOK, Treadway MT, Strauss GP, Chan SKW, Lee EHM, Hui CLM, Suen YN, Chen EYH. Effort-based decision-making impairment in patients with clinically-stabilized first-episode psychosis and its relationship with amotivation and psychosocial functioning. Eur Neuropsychopharmacol 2019; 29:629-642. [PMID: 30879927 DOI: 10.1016/j.euroneuro.2019.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/06/2018] [Accepted: 03/02/2019] [Indexed: 12/14/2022]
Abstract
Effort-based decision-making has recently been proposed as a potential mechanism contributing to motivational deficits (amotivation) in psychotic disorder. Previous research has identified altered effort allocation in chronic schizophrenia, but produced mixed results regarding its relationship with amotivation. No study has investigated effort allocation in first-episode psychosis (FEP). We examined effort-based decision-making in 45 clinically-stabilized FEP patients and 45 demographically-matched controls, using Effort-Expenditure for Reward Task (EEfRT) which measures allocation of physical effort for monetary reward at varying magnitude and probability levels. Our results showed that FEP patients did not demonstrate overall reduction in effort expenditure but displayed reduced willingness to expend effort for high-value/high-probability reward as compared to controls. In particular, such selective effort-related impairment was most pronounced in patients with high levels of amotivation. Furthermore, reduced allocation of greater effort for higher probability reward was related to poorer psychosocial functioning. Decreased effort exertion was generally unrelated to other symptom dimensions, self-report anhedonia, antipsychotic dose and cognitive deficits. This study thus provides the first evidence of effort-based decision-making impairment in FEP, and indicates that first-episode patients were not generally effort-averse but exhibited inefficient effort allocation by failing to make high-effort choices to maximize reward receipt. Our findings affirm the critical role of amotivation on aberrant effort allocation, and support the link between laboratory-based effort-cost measures and real-world psychosocial functioning in medicated FEP. Further longitudinal research is required to clarify trajectory of suboptimal effort allocation and its potential utility in predicting amotivation and functional outcomes in the early course of illness.
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Affiliation(s)
- Wing Chung Chang
- Department of Psychiatry, University of Hong Kong, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong; State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong.
| | - Angel On Ki Chu
- Department of Psychiatry, University of Hong Kong, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong
| | - Michael T Treadway
- Department of Psychology, University of Emory, Atlanta, GA 30322, United States
| | - Gregory P Strauss
- Department of Psychology, University of Georgia, Athens, GA 30602, United States
| | - Sherry Kit Wa Chan
- Department of Psychiatry, University of Hong Kong, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong; State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong
| | - Edwin Ho Ming Lee
- Department of Psychiatry, University of Hong Kong, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong
| | - Christy Lai Ming Hui
- Department of Psychiatry, University of Hong Kong, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong
| | - Yi Nam Suen
- Department of Psychiatry, University of Hong Kong, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong
| | - Eric Yu Hai Chen
- Department of Psychiatry, University of Hong Kong, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong; State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong
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19
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Psychotic like experiences as part of a continuum of psychosis: Associations with effort-based decision-making and reward responsivity. Schizophr Res 2019; 206:307-312. [PMID: 30442477 DOI: 10.1016/j.schres.2018.10.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 10/23/2018] [Indexed: 11/22/2022]
Abstract
Research examining psychotic disorders typically involves comparison between individuals with a clinical disorder and healthy controls. However, research suggests that psychotic symptoms, such as delusions and hallucinations, may exist on a continuum ranging from variation in healthy individuals to diagnosable psychotic disorders. On this continuum, some individuals endorse occasional psychotic like experiences (PLEs) that do not cause sufficient impairment or distress to warrant a clinical diagnosis. Given this continuum model, one might expect to observe impairments in those with PLEs in the same behavioral domains impaired in schizophrenia. Thus, we examined two domains typically impaired in schizophrenia, effort allocation and reward responsivity, in a large university sample (n = 126). Participants completed tasks assessing effort-based decision-making, reward responsivity, and questionnaires assessing PLEs. Greater PLEs were associated with greater effort expenditure regardless of probability of receiving a reward or reward value. Higher PLEs were related to greater positive feelings when receiving rewards. Importantly, these relationships remained the same when controlling for other symptoms such as depression, anhedonia, and anxiety. These findings suggest that PLEs may be associated with hypersensitivity to reward at the less severe end of the psychotic continuum, with effort to attain a reward expended in a potentially inefficient manner. This pattern is consistent with models of hyperdopaminergic states in psychotic individuals not taking antipsychotic medications, given the role of dopamine in modulating effort allocation and reward anticipation.
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20
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Favrod J, Nguyen A, Chaix J, Pellet J, Frobert L, Fankhauser C, Ismailaj A, Brana A, Tamic G, Suter C, Rexhaj S, Golay P, Bonsack C. Improving Pleasure and Motivation in Schizophrenia: A Randomized Controlled Clinical Trial. PSYCHOTHERAPY AND PSYCHOSOMATICS 2019; 88:84-95. [PMID: 30783071 PMCID: PMC6518864 DOI: 10.1159/000496479] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 12/30/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Negative symptoms are frequent in patients with schizophrenia and are associated with marked impairments in social functioning. The efficacy of drug-based treatments and psychological interventions on primary negative symptoms remains limited. The Positive Emotions Programme for Schizophrenia (PEPS) is designed to improve pleasure and motivation in schizophrenia patients by targeting emotion regulation and cognitive skills relevant to apathy and anhedonia. The main hypothesis of this study is that patients who attend 8 one-hour sessions of PEPS and treatment as usual (TAU) will have lower total apathy-avolition and anhedonia-asociality composite scores on the Scale for the Assessment of Negative Symptoms (SANS) than patients who attend only TAU. METHODS Eighty participants diagnosed with schizophrenia or schizoaffective disorder were randomized to receive either TAU or PEPS + TAU. The participants were assessed by independent evaluators before randomization (T0), in a post-test after 8 weeks of treatment (T1) and at a 6-month follow-up (T2). RESULTS The post-test results and 6-month follow-up assessments according to an intention-to-treat analysis showed that the apathy and anhedonia composite scores on the SANS indicated statistically greater clinical improvements in PEPS participants than in non-PEPS participants. In the post-test, anhedonia but not apathy was significantly improved, thus favouring the PEPS condition. These results were sustained at the 6-month follow-up. CONCLUSIONS PEPS is an effective intervention to reduce anhedonia in schizophrenia. PEPS is a short, easy-to-use, group-based, freely available intervention that is easy to implement in a variety of environments (ClinicalTrials.gov ID: NCT02593058).
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Affiliation(s)
- Jérôme Favrod
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland,
| | - Alexandra Nguyen
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland
| | - Joséphine Chaix
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland
| | - Joanie Pellet
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland
| | - Laurent Frobert
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland
| | - Caroline Fankhauser
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland,Community Psychiatry Service, Department of Psychiatry, University Hospital Centre, Lausanne, Switzerland
| | | | | | | | - Caroline Suter
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland
| | - Shyhrete Rexhaj
- La Source, School of Nursing Sciences, HES-SO University of Applied Sciences and Arts of Western Switzerland, Lausanne, Switzerland
| | - Philippe Golay
- Community Psychiatry Service, Department of Psychiatry, University Hospital Centre, Lausanne, Switzerland
| | - Charles Bonsack
- Community Psychiatry Service, Department of Psychiatry, University Hospital Centre, Lausanne, Switzerland
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21
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Temporal Self, Psychopathology, and Adaptive Functioning Deficits: An Examination of Acute Psychiatric Patients. J Nerv Ment Dis 2019; 207:76-83. [PMID: 30672879 DOI: 10.1097/nmd.0000000000000925] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Individuals with psychiatric illness have difficulty remembering specific events from their personal past and imagining their future. We examined psychotic psychiatric inpatients' sense of self-continuity over time, predicting that low levels of temporal continuity would predict increased psychopathology and lower functionality. Inpatients (n = 60) were compared with healthy controls (n = 60) on a validated measure of self-continuity, psychiatric symptoms, insight, and adaptive functioning capacity. Results revealed that patients had significant difficulty perceiving their past, present, and future selves as unified over time compared with controls. Within the inpatient group, deficits in present to future self-continuity was associated with patients' severity of positive, negative, and mood symptoms, degree of insight, and adaptive capacity. It may be the case that temporal self-unity provides a context for deriving reinforcement from daily life experiences in the moment and in anticipating the future as well as a worthwhile goal for treatment exploration.
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22
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Abstract
Motivational impairment has long been associated with schizophrenia but the underlying mechanisms are not clearly understood. Recently, a small but growing literature has suggested that aberrant effort-based decision-making may be a potential contributory mechanism for motivational impairments in psychosis. Specifically, multiple reports have consistently demonstrated that individuals with schizophrenia are less willing than healthy controls to expend effort to obtain rewards. Further, this effort-based decision-making deficit has been shown to correlate with severity of negative symptoms and level of functioning, in many but not all studies. In the current review, we summarize this literature and discuss several factors that may underlie aberrant effort-based decision-making in schizophrenia.
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Affiliation(s)
- Adam J. Culbreth
- Department of Psychological and Brain Sciences, Washington University in Saint Louis
| | - Erin K. Moran
- Department of Psychiatry, Washington University in Saint Louis
| | - Deanna M. Barch
- Department of Psychological and Brain Sciences, Washington University in Saint Louis
- Department of Psychiatry, Washington University in Saint Louis
- Department of Radiology, Washington University in Saint Louis
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