"I'm always going to be tired": a qualitative exploration of adolescents' experiences of fatigue in depression

Adolescent depression is a prevalent and disabling condition, but current psychological treatments are only moderately effective. One way to enhance outcomes is to further our understanding of adolescent depression and improve our capacity to target the most frequently reported and problematic symptoms. A common but often neglected symptom of depression is fatigue, which is associated with considerable impairment and has the potential to interfere with adolescents' engagement in psychological therapies. Despite this, the experience of fatigue in adolescent depression and how we target it in treatment is currently poorly understood. Therefore, we aimed to explore adolescents' experiences and understandings of fatigue in depression, recruiting from clinical and community settings. Semi-structured interviews were conducted with 19 UK-based adolescents aged 14-18 years old with elevated symptoms of depression. Using reflexive thematic analysis, three themes were generated. Fatigue is a complex concept explored adolescents' understanding of fatigue as a dynamic, multifaceted symptom which had mental and physical components. Trapped in a cycle of fatigue considered the complex and reciprocal relationship between fatigue and other depressive symptoms, and the subsequent impact of limited energy on engagement with everyday activities. Finally, stigma as a barrier to help-seeking highlighted how adolescents were reluctant to seek help due to experienced stigma and the perception that fatigue was not a serious enough symptom. Findings from this study suggest that fatigue should be viewed as a psychological as well as somatic symptom of depression, with implications regarding the identification and treatment of fatigue in depression in routine clinical practice.

Non-randomised feasibility study of training workshops for Talking Therapies service high-intensity therapists to optimise depression and anxiety outcomes for individuals with co-morbid personality difficulties: a study protocol

BACKGROUND

The NHS Talking Therapies for Anxiety and Depression programme ('TTad'; formerly Improving Access to Psychological Therapies 'IAPT') delivers high-intensity cognitive behavioural therapy (CBT) to over 200,000 individuals each year for common mental health problems like depression and anxiety. More than half of these individuals experience comorbid personality difficulties, who show poorer treatment outcomes. TTad therapists report feeling unskilled to work with clients with personality difficulties, and enhancing the training of TTad therapists may lead to improved treatment outcomes for individuals presenting with secondary personality difficulties alongside depression and anxiety.

METHODS

This is a pre-post non-randomised mixed-method feasibility study, exploring the feasibility and acceptability of a 1-day training workshop for high-intensity (HI) CBT therapists. The workshop is focused on understanding and assessing personality difficulties and adapting HICBT treatments for anxiety and depression to accommodate client needs. The feasibility and acceptability of the workshop and the evaluation procedures will be investigated. It will be examined to what extent the workshop provision leads to improvements in therapist skills and confidence and explored to what extent the training has the potential to enhance clinical outcomes for this client group.

DISCUSSION

This feasibility study will provide data on the acceptability and feasibility of delivering brief therapist training to adapt usual HICBT to optimise care for individuals with secondary personality difficulties seeking treatment in TTad services for a primary problem of depression and/or anxiety. The study will also evaluate proof of concept that such an approach has the potential to improve clinical outcomes for those with secondary personality difficulties and report any possible harms identified. The study will inform the design of a future randomised controlled trial designed to test the effectiveness and cost-effectiveness of the training.

TRIAL REGISTRATION

ISRCTN81104604 . Submitted on 6th June 2022. Registration date: 3rd January 2023.

The glass half-full or half-empty: a within-subject comparison of solution-focused versus problem-focused client descriptions on therapist emotions and hope for treatment

BACKGROUND

Intake assessments vary in their focus on strengths and solutions compared with problems. They provide therapists with first impressions of their clients. Research shows that first impressions may have strong and lasting effects.

AIMS

To compare how solution- versus problem-focused case descriptions influence therapists' emotions and initial expectations for successfully working with a client.

METHODS

Vignettes describing clients were manipulated to focus either on solutions and strengths, or on problems. In a within-subject experimental design, 33 (Sample 1) and 29 (Sample 2) trainee therapists each read four case descriptions (two solution-focused and two problem-focused vignettes; order fully counterbalanced). After each vignette, participants rated their affect and expectations for successfully working with the client.

RESULTS

In both samples, solution-focused vignettes were associated with significantly higher levels of positive affect and positive expectations for treatment, and with significantly lower levels of negative affect, compared with problem-focused vignettes. Effect size differences between conditions were generally large (Cohen's d between .63 and 1.22).

CONCLUSIONS

Focusing on clients' goals, their strengths, and actively highlighting better moments and areas of problem-free functioning may increase therapists' positive emotions and their hope for clients' successful treatment. A next step is to examine the degree to which these positive short-term effects are, in turn, predictive of better clinical outcomes in therapy. Future research could additionally examine whether supporting therapists to frame clients' initial assessments in solution-focused ways may be one way to contribute to workforce well-being.

Preliminary clinical and cost effectiveness of augmented depression therapy versus cognitive behavioural therapy for the treatment of anhedonic depression (ADepT): a single-centre, open-label, parallel-group, pilot, randomised, controlled trial

Background

Anhedonia (reduced interest/pleasure) symptoms and wellbeing deficits are core to depression and predict a poor prognosis. Current depression psychotherapies fail to target these features adequately, contributing to sub-optimal outcomes. Augmented Depression Therapy (ADepT) has been developed to target anhedonia and wellbeing. We aimed to establish clinical and economic proof of concept for ADepT and to examine feasibility of a future definitive trial comparing ADepT to Cognitive Behavioural Therapy (CBT).

Methods

In this single-centre, open-label, parallel-group, pilot randomised controlled trial, adults meeting diagnostic criteria for a current major depressive episode, scoring ≥10 on the Patient Health Questionnaire (PHQ-9) and exhibiting anhedonic features (PHQ-9 item 1 ≥ 2) were recruited primarily from high intensity Improving Access to Psychological Therapy (IAPT) service waiting lists in Devon, UK. Participants were randomised to receive 20 sessions of CBT or ADepT, using a mimimisation algorithm to balance depression severity and antidepressant use between groups. Treatment was delivered in an out-patient university-based specialist mood disorder clinic. Researcher-blinded assessments were completed at intake and six, 12, and 18 months. Co-primary outcomes were depression (PHQ-9) and wellbeing (Warwick Edinburgh Mental Wellbeing Scale) at 6 months. Primary clinical proof-of-concept analyses were intention to treat. Feasibility (including safety) and health economic analyses used complete case data. This trial is registered at the ISRCTN registry, ISRCTN85278228.

Findings

Between 3/29/2017 and 7/31/2018, 82 individuals were recruited (102% of target sample) and 41 individuals were allocated to each arm. A minimum adequate treatment dose was completed by 36/41 (88%) of CBT and 35/41 (85%) of ADepT participants. There were two serious adverse events in each arm (primarily suicide attempts; none of which were judged to be trial- or treatment-related), with no other evidence of harms. Intake and six-month primary outcome data was available for 37/41 (90%) CBT participants and 32/41 (78%) ADepT participants. Between-group effects favoured ADepT over CBT for depression (meanΔ = -1.35, 95% CI = -3.70, 1.00, d = 0.23) and wellbeing (meanΔ = 2.64, 95% CI = -1.71, 6.99, d = 0.27). At 18 months, the advantage of ADepT over CBT was preserved and ADepT had a >80% probability of cost-effectiveness.

Interpretation

These findings provide proof of concept for ADepT and warrant continuation to definitive trial.

Funding

NIHR Career Development Fellowship.

‘It just doesn't feel right’ and other reasons why some people fear and avoid positive emotions

The need to further our understanding of positive affect dysregulation in depression has been widely acknowledged. Two related relevant concepts in this realm, are Avoidance Of Positivity (AOP; referring to avoidance behaviour towards positivity) and Fear Of Positivity (FOP; referring to anxious or unpleasant feelings related to positivity). However, traditionally manifestations of AOP and FOP are considered in isolation, and self-report scales used to measure both concepts show considerable content overlap. Therefore, the first study aim was to examine how AOP and FOP relate to one another, depressive symptomatology and anhedonia, through new clearly delineated scales. For exploratory purposes, general and state-specific versions were developed. The second aim was to uncover beliefs that underlie the tendency towards AOP/FOP. An adult community sample (n = 197) completed online measures of AOP, FOP, depressive symptoms and anhedonia, and answered open-ended questions about reasons for AOP and FOP. Cross-sectionally, preliminary evidence was found for AOP and FOP being positively associated with one another, depressive symptomatology and anhedonia. Even after controlling for depressive symptomatology, anhedonia remained positively associated with AOP and FOP. So, AOP and FOP may be viable candidate mechanisms maintaining anhedonia that are worth further investigation and may be appropriate to target during treatment. Answers to the open-ended questions (n = 77) reflected various beliefs underlying AOP/FOP, which were broader than simply anticipating negative consequences of feeling positive and also touched on themes of unworthiness and social inappropriateness of feeling positive. Some theoretical and clinical implications of different beliefs underlying AOP/FOP are discussed.

A randomised controlled trial to investigate the clinical effectiveness and cost effectiveness of Mindfulness-Based Cognitive Therapy (MBCT) for depressed non-responders to Increasing Access to Psychological Therapies (IAPT) high-intensity therapies: study protocol

BACKGROUND

Major depression represents a pressing challenge for health care. In England, Increasing Access to Psychological Therapies (IAPT) services provide evidence-based psychological therapies in a stepped-care approach to patients with depression. While introduction of these services has successfully increased access to therapy, estimates suggest that about 50% of depressed patients who have come to the end of the IAPT pathway still show significant levels of symptoms. This study will investigate whether Mindfulness-Based Cognitive Therapy (MBCT), a group intervention combining training in mindfulness meditation and elements from cognitive therapy, can have beneficial effects in depressed patients who have not responded to high-intensity therapy in IAPT. It will seek to establish the effectiveness and cost-effectiveness of MBCT as compared to the treatment these patients would usually receive.

METHODS

In a 2-arm randomised controlled trial, patients who currently meet the criteria for major depressive disorder and who have not sufficiently responded to at least 12 sessions of IAPT high-intensity therapy will be allocated, at a ratio of 1:1, to receive either MBCT (in addition to treatment as usual [TAU]) or continue with TAU only. Assessments will take place at baseline, 10 weeks and 34 weeks post-randomisation. The primary outcome will be reduction in depression symptomatology 34 weeks post-randomisation as assessed using the Public Health Questionnaire-9 (PHQ-9). Secondary outcomes will include depressive symptomatology at 10 weeks post-randomisation and other clinical outcomes measured at 10-week and 34-week follow-up, along with a series of binarised outcomes to indicate clinically significant and reliable change. Evaluations of cost-effectiveness will be based on assessments of service use costs collected using the Adult Service Use Schedule and health utilities derived from the EQ-5D.

DISCUSSION

This trial will add to the evidence base for the use of MBCT in depressed treatment non-responders. It will constitute the first trial to test MBCT following non-response to psychological therapy, with results providing a direct estimate of efficacy within the IAPT pathway. As such, its results will offer an important basis for decisions regarding the adoption of MBCT for non-responders within IAPT.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05236959. Registered on 11 February 2022. ISRCTN 17755571. Registered on 2 February 2021.

How well do Cognitive Behavioural Therapy and Behavioural Activation for depression repair anhedonia? A secondary analysis of the COBRA randomized controlled trial

A secondary analysis of the COBRA randomized controlled trial was conducted to examine how well Cognitive Behavioural Therapy (CBT) and Behavioural Activation (BA) repair anhedonia. Patients with current major depressive disorder (N = 440) were randomized to receive BA or CBT, and anhedonia and depression outcomes were measured after acute treatment (six months) and at two further follow up intervals (12 and 18 months). Anhedonia was assessed using the Snaith Hamilton Pleasure Scale (SHAPS; a measure of consummatory pleasure). Both CBT and BA led to significant improvements in anhedonia during acute treatment, with no significant difference between treatments. Participants remained above healthy population averages of anhedonia at six months, and there was no further significant improvement in anhedonia at 12-month or 18-month follow up. Greater baseline anhedonia severity predicted reduced repair of depression symptoms and fewer depression-free days across the follow-up period in both the BA and CBT arms. The extent of anhedonia repair was less marked than the extent of depression repair across both treatment arms. These findings demonstrate that CBT and BA are similarly and only partially effective in treating anhedonia. Therefore, both therapies should be further refined or novel treatments should be developed in order better to treat anhedonia.

Addressing anhedonia to increase depression treatment engagement

Anhedonia, or reward system dysfunction, is associated with poorer treatment outcomes among depressed individuals. The role of anhedonia in treatment engagement, however, has not yet been explored. We review research on components of reward functioning impaired in depression, including effort valuation, reward anticipation, initial responsiveness, reward learning, reward probability, and reward delay, highlighting potential barriers to treatment engagement associated with these components. We then propose interventions to improve treatment initiation and continuation by addressing deficits in each component of reward functioning, focusing on modifications of existing evidence-based interventions to meet the needs of individuals with heightened anhedonia. We describe potential settings for these interventions and times at which they can be delivered during the process of referring individuals to mental health treatment, conducting intakes or assessments, and providing treatment. Additionally, we note the advantages of using screening processes already in place in primary care, workplace, school, and online settings to identify individuals with heightened anhedonia who may benefit from these interventions. We conclude with suggestions for future research on the impact of anhedonia on treatment engagement and the efficacy of interventions to address it. PRACTITIONER POINTS: Many depressed individuals who might benefit from treatment do not initiate it or discontinue early. One barrier to treatment engagement may be anhedonia, a core symptom of depression characterized by loss of interest or pleasure in usual activities. We describe brief interventions to improve treatment engagement in individuals with anhedonia that can be implemented during the referral process or early in treatment. We argue that interventions aiming to improve treatment engagement in depressed individuals that target anhedonia may be particularly effective.

Examining the relationship between anhedonia symptoms and trait positive appraisal style in adolescents: A longitudinal survey study

INTRODUCTION

Anhedonia, defined as a loss of interest and pleasure in previously enjoyable activities, is a core symptom of depression that predicts a poor treatment response in adolescents. We know little about the cognitive vulnerability factors that contribute to the development of anhedonia in youth. This cross-sectional and longitudinal survey study investigated the link between anhedonia symptoms and cognitive appraisal of positive affect.

METHODS

Baseline data were collected from 392 secondary school students in the UK (aged 13-16, 54 % Female), 170 of whom went on to complete the three-month follow-up assessment (a 43 % response rate). Participants rated their anhedonia symptoms and appraisal styles which were measured in terms of use of amplifying appraisals, dampening appraisals, and fear of positive emotion.

RESULTS

At baseline, greater anhedonia was significantly associated with increased levels of dampening and reduced levels of amplifying but was not significantly related to fear of positive emotion. Prospectively, greater baseline levels of amplifying uniquely predicted lower anhedonia severity at three-month follow-up, and vice-versa. There was no evidence for reciprocal prospective associations between anhedonia and, appraisal styles of dampening and fear of positive emotion.

CONCLUSION

These results indicate that cognitive appraisal of positive affect is associated with concurrent and to some extent can predict future symptoms of anhedonia in youth.

A feasibility randomised controlled trial of a brief early intervention for adolescent depression that targets emotional mental images and memory specificity (IMAGINE)

Brief, evidence-based interventions for adolescent depression are urgently required, particularly for school-settings. Cognitive mechanisms research suggests dysfunctional mental imagery and overgeneral memory could be promising targets to improve mood. This feasibility randomised controlled trial with parallel symptomatic groups (n = 56) compared a novel imagery-based cognitive behavioural intervention (ICBI) to non-directive supportive therapy (NDST) in school settings. Blind assessments (of clinical symptoms and cognitive mechanisms) took place pre-intervention, post-intervention and follow-up three months later. The trial aimed to evaluate the feasibility and acceptability of the methodology and interventions, and estimate the likely range of effects of the intervention on self-reported depression. The pre-defined criteria for proceeding to a definitive RCT were met: full recruitment occurred within eleven months; retention was 89%; ICBI acceptability was above satisfactory; and no harm was indicated. Intention-to-treat analysis found large effects in favour of ICBI (relative to NDST) at post-intervention in reducing depressive symptoms (d = -1.34, 95% CI [-1.87, -0.80]) and improving memory specificity (d = 0.79 [0.35, 1.23]), a key cognitive target. The findings suggest that ICBI may not only improve mood but also strengthen abilities associated with imagining and planning the future, critical skills at this life stage. A fully powered evaluation of ICBI is warranted. Trial Registration: https://www.isrctn.com/; ISRCTN85369879.

Personality difficulties and response to community-based psychological treatment for anxiety and depression

BACKGROUND

Previous research suggests that comorbid personality disorder may be associated with a less favourable treatment outcome for individuals with depression and anxiety disorder. However, little is known about whether personality difficulties are associated with treatment outcomes within Improving Access to Psychological Therapies (IAPT) services-the largest platform for treating depression and anxiety in England, UK. Secondary aims were to investigate i) whether individual personality difficulties are associated with treatment outcome and ii) whether findings are moderated by treatment type.

METHODS

The sample included 3,689 adults who accessed community-based psychological treatment (cognitive behavioural therapy, emotional skills training, or other psychological therapy) for depression and/or anxiety disorder. Associations between personality difficulties (assessed with the Standardised Assessment of Personality-Abbreviated Scale (SAPAS)) and treatment outcomes (recovery and reliable improvement in depression/anxiety symptom scores, assessed using questionnaire-based measures) were investigated using logistic/linear regression.

RESULTS

Personality difficulties were associated with a reduced likelihood of recovery (adjusted OR per unit increase on SAPAS: depression=0.87, 95%CI 0.84, 0.91; anxiety=0.86, 95%CI 0.82, 0.90) and reliable improvement (adjusted OR per unit increase on SAPAS: depression=0.88, 95%CI 0.84, 0.92; anxiety=0.85, 95%CI 0.82, 0.89). Those with three or more difficulties were over 30% less likely to recover/reliably improve.

LIMITATIONS

Personality difficulties data were collected via self-report and were not available for all participants.

CONCLUSION

Patients with personality difficulties have a less favourable response to psychological treatment for depression/anxiety disorder. If replicated, the findings highlight a major challenge to the way community-based psychological therapy services in England (IAPT services) are presently constituted.

Short-term affective consequences of specificity of rumination about unresolved personal goals

BACKGROUND AND OBJECTIVES

Rumination is a form of repetitive thinking that has been associated with both helpful and unhelpful consequences for mood and self-regulation. It has been suggested that the specificity of ruminative thought content may be one factor that determines whether state rumination about personal goals is adaptive. The present study tested the hypothesis that state rumination about unresolved personal goals is associated with unhelpful affective consequences only when rumination is low in specificity.

METHODS

We measured the extent and specificity of uninstructed rumination following the cueing of resolved and unresolved personal goals using a 30-min go/no-go task with thought probes. Changes in state positive and negative affect from before to after cueing goals, and before to after rumination during the go/no-go task were assessed.

RESULTS

Cueing unresolved goals resulted in a significant increase in negative affect, and subsequent affective recovery during the go/no-go task. Cueing unresolved goals resulted in more goal-focused rumination than cueing resolved goals. When ruminative thoughts were low in specificity, rumination mediated the association between goal discrepancies and negative affect: greater rumination about unresolved goals significantly impaired affective recovery and perpetuated negative affect.

LIMITATIONS

The findings await replication in clinical populations, where rumination is more commonly associated with unhelpful outcomes.

CONCLUSIONS

Greater levels of goal-focused rumination were associated with unhelpful affective consequences only when rumination was low in specificity. Specificity of thought content may be an important determinant of whether goal-focused rumination has helpful or unhelpful effects.

Distress and anhedonia as predictors of depression treatment outcome: A secondary analysis of a randomized clinical trial

Two core features of depression include depressed mood (heightened distress) and anhedonia (reduced pleasure). Despite their centrality to depression, studies have not examined their contribution to treatment outcomes in a randomized clinical trial providing mainstream treatments like antidepressant medications (ADM) and cognitive therapy (CT). We used baseline distress and anhedonia derived from a factor analysis of the Mood and Anxiety Symptom Questionnaire to predict remission and recovery in 433 individuals with recurrent/chronic major depressive disorder. Patients were provided with only ADM or both ADM and CT. Overall, higher baseline distress and anhedonia predicted longer times to remission within one year and recovery within three years. When controlling for treatment condition, distress improved prediction of outcomes over and above anhedonia, while anhedonia did not improve prediction of outcomes over and above distress. Interactions with treatment condition demonstrated that individuals with higher distress and anhedonia benefited from receiving CT in addition to ADM, whereas there was no added benefit of CT for individuals with lower distress and anhedonia. Assessing distress and anhedonia prior to treatment may help select patients who will benefit most from CT in addition to ADM. For the treatments and outcome measures tested, utilizing distress to guide treatment planning may yield the greatest benefit. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00057577.

Routine Cognitive Behavioural Therapy for Anxiety and Depression is More Effective at Repairing Symptoms of Psychopathology than Enhancing Wellbeing

The primary focus of classic cognitive behavioural therapy (CBT) for depression and anxiety is on decreasing symptoms of psychopathology. However, there is increasing recognition that it is also important to enhance wellbeing during therapy. This study investigates the extent to which classic CBT for anxiety and depression leads to symptom relief versus wellbeing enhancement, analysing routine outcomes in patients receiving CBT in high intensity Improving Access to Psychological Therapy (IAPT) Services in the UK. At intake, there were marked symptoms of anxiety and depression (a majority of participants scoring in the severe range) and deficits in wellbeing (a majority of participants classified as languishing, relative to general population normative data). CBT was more effective at reducing symptoms of anxiety and depression than repairing wellbeing. As a result, at the end of treatment, a greater proportion of participants met recovery criteria for anxiety and depression than had moved from languishing into average or flourishing levels of wellbeing. Given the importance of wellbeing to client definitions of recovery, the present results suggest a greater emphasis should be placed on enhancing wellbeing in classic CBT.

Bringing light into darkness: A multiple baseline mixed methods case series evaluation of Augmented Depression Therapy (ADepT)

Two core features of depression are elevations in negative valence system (NVS) functioning and reductions in positive valence system (PVS) functioning. Existing psychological treatments have focused on the NVS and neglected the PVS, which may contribute to sub-optimal outcomes. The present mixed methods multiple randomised baseline case series preliminarily evaluates Augmented Depression Therapy (ADepT), a novel depression treatment targeting PVS and NVS disturbance, that aims both to reduce depression and enhance wellbeing. Eleven clinically depressed participants were recruited. Intensive time series analyses showed that 7/11 participants improved on both wellbeing and depression. Reliable and clinically significant improvement was observed for 9/11 participants on at least one of these outcomes (and also across a range of other PVS and NVS outcomes). Group level analyses showed significant pre to post change on all outcomes. Benchmarking analyses indicated these effect sizes were at least comparable (and for some PVS outcomes superior) to existing treatments. Gains were largely sustained over one-year follow-up. Qualitative interviews indicated ADepT was feasible and acceptable. These findings provide preliminary support for ADepT as a novel depression treatment. Further evaluation, directly comparing ADepT to existing treatments using randomised controlled trial designs, is now required.

Evaluating Augmented Depression Therapy (ADepT): study protocol for a pilot randomised controlled trial

BACKGROUND

While existing psychological treatments for depression are effective for many, a significant proportion of depressed individuals do not respond to current approaches and few remain well over the long-term. Anhedonia (a loss of interest or pleasure) is a core symptom of depression which predicts a poor prognosis but has been neglected by existing treatments. Augmented Depression Therapy (ADepT) has been co-designed with service users to better target anhedonia alongside other features of depression. This mixed methods pilot trial aims to establish proof of concept for ADepT and to examine the feasibility and acceptability of a future definitive trial evaluating the clinical and cost-effectiveness of ADepT, compared to an evidence-based mainstream therapy (Cognitive Behavioural Therapy; CBT) in the acute treatment of depression, the prevention of subsequent depressive relapse, and the enhancement of wellbeing.

METHODS

We aim to recruit 80 depressed participants and randomise them 1:1 to receive ADepT (15 weekly acute and 5 booster sessions in following year) or CBT (20 weekly acute sessions). Clinical and health economic assessments will take place at intake and at 6-, 12-, and 18-month follow-up. Reductions in PHQ-9 depression severity and increases in WEMWBS wellbeing at 6-month assessment (when acute treatment should be completed) are the co-primary outcomes. Quantitative and qualitative process evaluation will assess mechanism of action, implementation issues, and contextual moderating factors. To evaluate proof of concept, intake-post effect sizes and the proportion of individuals showing reliable and clinically significant change on outcome measures in each arm at each follow-up will be reported. To evaluate feasibility and acceptability, we will examine recruitment, retention, treatment completion, and data completeness rates and feedback from patients and therapists about their experience of study participation and therapy. Additionally, we will establish the cost of delivery of ADepT.

DISCUSSION

We will proceed to definitive trial if any concerns about the safety, acceptability, feasibility, and proof of concept of ADepT and trial procedures can be rectified, and we recruit, retain, and collect follow-up data on at least 60% of the target sample.

TRIAL REGISTRATION

ISCRTN85278228, registered 27/03/2017.

A brief early intervention for adolescent depression that targets emotional mental images and memories: protocol for a feasibility randomised controlled trial (IMAGINE trial)

BACKGROUND

Adolescent depression is common and impairing. There is an urgent need to develop early interventions to prevent depression becoming entrenched. However, current psychological interventions are difficult to access and show limited evidence of effectiveness. Schools offer a promising setting to enhance access to interventions, including reducing common barriers such as time away from education. Distressing negative mental images and a deficit in positive future images, alongside overgeneral autobiographical memories, have been implicated in depression across the lifespan, and interventions targeting them in adults have shown promise. Here, we combine techniques targeting these cognitive processes into a novel, brief psychological intervention for adolescent depression. This feasibility randomised controlled trial will test the feasibility and acceptability of delivering this imagery-based cognitive behavioural intervention in schools.

METHODS/DESIGN

Fifty-six adolescents (aged 16-18) with high symptoms of depression will be recruited from schools. Participants will be randomly allocated to the imagery-based cognitive behavioural intervention (ICBI) or the control intervention, non-directive supportive therapy (NDST). Data on feasibility and acceptability will be recorded throughout, including data on recruitment, retention and adherence rates as well as adverse events. In addition, symptom assessment will take place pre-intervention, post-intervention and at 3-month follow-up. Primarily, the trial aims to establish whether it is feasible and acceptable to carry out this project in a school setting. Secondary objectives include collecting data on clinical measures, including depression and anxiety, and measures of the mechanisms proposed to be targeted by the intervention. The acceptability of using technology in assessment and treatment will also be evaluated.

DISCUSSION

Feasibility, acceptability and symptom data for this brief intervention will inform whether an efficacy randomised controlled trial is warranted and aid planning of this trial. If this intervention is shown in a subsequent definitive trial to be safe, clinically effective and cost-effective, it has potential to be rolled out as an intervention and so would significantly extend the range of therapies available for adolescent depression. This psychological intervention draws on cognitive mechanism research suggesting a powerful relationship between emotion and memory and uses imagery as a cognitive target in an attempt to improve interventions for adolescent depression.

TRIAL REGISTRATION

ISRCTN85369879.

Beneficial effects of training in self-distancing and perspective broadening for people with a history of recurrent depression

Cognitive training designed to recalibrate maladaptive aspects of cognitive-affective processing associated with the presence of emotional disorder can deliver clinical benefits. This study examined the ability of an integrated training in self-distancing and perspective broadening (SD-PB) with respect to distressing experiences to deliver such benefits in individuals with a history of recurrent depression (≥3 prior episodes), currently in remission. Relative to an overcoming avoidance (OA) control condition, SD-PB: a) reduced distress to upsetting memories and to newly encountered events, both during training when explicitly instructed to apply SD-PB techniques, and after-training in the absence of explicit instructions; b) enhanced capacity to self-distance from and broaden perspectives on participants' experiences; c) reduced residual symptoms of depression. These data provide initial support for SD-PB as a low-intensity cognitive training providing a spectrum of cognitive and affective benefits for those with recurrent depression who are at elevated risk of future episodes.

Opportunities and Challenges for the Emerging Field of Positive Emotion Regulation: A Commentary on the Special Edition on Positive Emotions and Cognitions in Clinical Psychology

The importance of developing a better understanding of positive emotion regulation in both healthy and clinical populations is now recognised. This special edition brings together leading figures in the positive emotion regulation field and has contributions characterizing positive phenomena, differentiating them from negative phenomena, and evaluating underlying psychological mechanisms that drive these phenomena. This commentary reviews these articles to highlight challenges and opportunities for this emerging field, including the need to better characterize positive phenomena, to be more explicit about how the links between negative and positive phenomena are conceptualised, to evaluate more robustly underlying mechanisms, to standardize measurement of positive constructs, and to ensure that these scientific findings lead to meaningful changes in real-world policy and practice.

Interoception, contemplative practice, and health

Interoception can be broadly defined as the sense of signals originating within the body. As such, interoception is critical for our sense of embodiment, motivation, and well-being. And yet, despite its importance, interoception remains poorly understood within modern science. This paper reviews interdisciplinary perspectives on interoception, with the goal of presenting a unified perspective from diverse fields such as neuroscience, clinical practice, and contemplative studies. It is hoped that this integrative effort will advance our understanding of how interoception determines well-being, and identify the central challenges to such understanding. To this end, we introduce an expanded taxonomy of interoceptive processes, arguing that many of these processes can be understood through an emerging predictive coding model for mind–body integration. The model, which describes the tension between expected and felt body sensation, parallels contemplative theories, and implicates interoception in a variety of affective and psychosomatic disorders. We conclude that maladaptive construal of bodily sensations may lie at the heart of many contemporary maladies, and that contemplative practices may attenuate these interpretative biases, restoring a person’s sense of presence and agency in the world.

Modifying social anxiety related to a real-life stressor using online Cognitive Bias Modification for interpretation

Modifying threat related biases in attention and interpretation has been shown to successfully reduce global symptoms of anxiety in high anxious and clinically anxious samples (termed Cognitive Bias Modification, CBM). However, the possibility that CBM can be used as a way to prevent anxiety associated with an upcoming real-life stressful event in vulnerable populations has yet to be systematically examined. The present study aimed to assess whether a two-week course of online CBM for interpretations (CBM-I) could reduce social evaluative fear when starting university. Sixty-nine students anxious about starting university completed five sessions of online CBM in the two weeks prior to starting university, or completed a placebo control intervention. Results indicated that CBM-I reduced social evaluative fear from baseline to day one of starting university to a greater extent than the placebo control intervention. Also, there was a greater reduction in state anxiety and a trend indicating a greater reduction in social evaluative fear in the CBM-I group at 4 weeks follow-up. Results suggest that CBM-I could be used as a preventative tool to help reduce anxiety specific to challenging life events.

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Cognitive Bias Modification (CBM-I) was tested as a preventative tool for real-life stress.

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Participants were students who reported anxiety about starting university.

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Participants were allocated to 2 weeks of CBM-I or placebo control before term began.

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Social evaluative fear was reduced in the CBM-I group but not in the placebo group.

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There was evidence of therapeutic effect up to four weeks post-intervention.

An investigation of the relationship between positive affect regulation and depression

There is preliminary evidence that dysphoric symptoms are associated with maladaptive regulation of positive emotion. We investigated to what extent this pattern is unique to depression symptoms, persists in recovery, and extends to apprehension of intense emotion experience. In Study 1, in a sample of undergraduates (N = 112), dysphoria was associated with apprehension about experiencing intense emotion and dampening of positive emotion. Reductions in the amplification of positive emotion experience were uniquely associated with anhedonic depressive symptoms. Study 2 compared a recovered depressed and never-depressed student sample (N = 123), and found that recovered individuals reported using more maladaptive responses to positive affect. In Study 3 we examined community-recruited depressed, recovered and never-depressed groups (N = 50), and found that depressed individuals reported a greater tendency to dampen positive emotion than their never-depressed counterparts, but did not significantly differ from recovered depressed individuals. Greater dampening and reduced amplification of positive experience were again uniquely associated with anhedonic depressive symptoms. Our findings converge on the proposal that current depressive symptoms, rather than a history of depression, are more strongly linked to difficulties with emotion regulation, and suggest that targeting positive emotion could reduce anhedonia and improve treatment outcomes.

A comparison of cognitive bias modification for interpretation and computerized cognitive behavior therapy: effects on anxiety, depression, attentional control, and interpretive bias

OBJECTIVE

Computerized cognitive behavioral therapy (cCBT) and cognitive bias modification for interpretation (CBM-I) both have demonstrated efficacy in alleviating social anxiety, but how they compare with each other has not been investigated. The present study tested the prediction that both interventions would reduce anxiety relative to a no-intervention comparison condition, but CBM-I would be particularly effective at modifying threat-related cognitive bias under high mental load.

METHOD

Sixty-three primarily Caucasian adults (mean age = 22.7, SD = 5.87; 68.3% female) with high social anxiety, randomly allocated to 3 groups: CBM-I (n = 21), cCBT (n = 21), and a no-intervention control group (n = 21) provided complete data for analysis. Pre- and postintervention (4 sessions lasting 2 weeks, control participants only attended the pre-post sessions) self-report measures of anxiety, depression, attentional control, and threat-related interpretive bias were completed. In addition, interpretive bias under high versus low cognitive load was measured using the Scrambled Sentences Test.

RESULTS

Both CBM-I and cCBT groups reported significantly reduced levels of social anxiety, trait anxiety, and depression and improved attentional control, relative to the control group, with no clear superiority of either active intervention. Although both active conditions reduced negative bias on the Scrambled Sentences Test completed under mental load, CBM-I was significantly more effective at doing so.

CONCLUSIONS

The results suggest that although not differing in therapeutic efficacy, CBM-I and cCBT might differ in the resilience of their effects when under mental load.

Risk-avoidant decision making increased by threat of electric shock

Threat cues elicit defensive reactions mediated by limbic brain circuitry that is also implicated in risk-sensitive decision making. Building upon research looking at stress effects on decision making, a gambling task was administered to 65 healthy adults, comparing decision making on trials on which a red screen background signalled threat of shocks against trials when shocks could not occur. The threat cues elicited increased electrodermal activity and a sustained decrease in heart rate, consistent with defensive vigilance. The threat condition was associated with risk-avoidant choices, on trials where the risky option involved moderate losses and when choosing between options involving only losses. These effects were not explained by changes in latency. Threat exerts immediate effects on decision making and physiological arousal, biasing subjects towards safer alternatives, potentially through a magnified processing of loss information.

Physiological responses to near-miss outcomes and personal control during simulated gambling

Near-miss outcomes during gambling are non-win outcomes that fall close to a pay-out. While objectively equivalent to an outright miss, near-misses motivate ongoing play and may therefore be implicated in the development of disordered gambling. Given naturalistic data showing increases in heart rate (HR) and electrodermal activity (EDA) during periods of real gambling play, we sought to explore the phasic impact of win, near-miss and full-miss outcomes on physiological arousal in a controlled laboratory environment. EDA and HR were monitored as healthy, student participants (n = 33) played a simulated slot-machine task involving unpredictable monetary wins. A second gambling distortion, perceived personal control, was manipulated within the same task by allowing the participant to select the play icon on some trials, and having the computer automatically select the play icon on other trials. Near-misses were rated as less pleasant than full-misses. However, on trials that involved personal choice, near-misses produced higher ratings of 'continue to play' than full-misses. Winning outcomes were associated with phasic EDA responses that did not vary with personal choice. Compared to full-misses, near-miss outcomes also elicited an EDA increase, which was greater on personal choice trials. Near-misses were also associated with greater HR acceleration than other outcomes. Near-miss outcomes are capable of eliciting phasic changes in physiological arousal consistent with a state of subjective excitement, despite their objective non-win status.

The structure of past and future lives in depression

This study assessed the organization of past autobiographical knowledge in individuals with either current major depressive disorder (MDD), MDD in remission, or no history of MDD (the control group). Participants generated personal lists of "life chapters," dividing both their past and potential future into subjectively meaningful episodes or themes (e.g., "married life"). They were then given a list of potentially chapter-descriptive positive or negative attributes and sorted them according to the different chapters. Results revealed that, relative to the control group, MDD participants selected more negative attributes overall, showed greater redundancy for negative attributes (i.e., using the same ones repeatedly across chapters) and reduced redundancy for positive attributes, and exhibited greater compartmentalization (i.e., the negative and positive attributes were clustered separately across different chapters). A similar pattern emerged for the remitted MDD group relative to controls, with the exception of negative redundancy, which was not elevated. For future chapters, there were no group differences. Finally, a greater number of past depressive episodes was associated with increasingly reduced positive redundancy. These data reveal a "depressogenic" structuring of past (but not future) knowledge in MDD that is also evident in a remitted MDD group, with the exception of negative redundancy, which appears to be a marker of the acute state. These findings shed light on important aspects of the organization of past knowledge that are likely to be linked to maladaptive processing biases in those with a depression history.

Listening to Your Heart

Theories proposing that how one thinks and feels is influenced by feedback from the body remain controversial. A central but untested prediction of many of these proposals is that how well individuals can perceive subtle bodily changes (interoception) determines the strength of the relationship between bodily reactions and cognitive-affective processing. In Study 1, we demonstrated that the more accurately participants could track their heartbeat, the stronger the observed link between their heart rate reactions and their subjective arousal (but not valence) ratings of emotional images. In Study 2, we found that increasing interoception ability either helped or hindered adaptive intuitive decision making, depending on whether the anticipatory bodily signals generated favored advantageous or disadvantageous choices. These findings identify both the generation and the perception of bodily responses as pivotal sources of variability in emotion experience and intuition, and offer strong supporting evidence for bodily feedback theories, suggesting that cognitive-affective processing does in significant part relate to “following the heart.”

Can you feel the beat? Interoceptive awareness is an interactive function of anxiety- and depression-specific symptom dimensions

Delineating the differential effects of anxiety versus depression on patterns of information processing has proved challenging. The tripartite model of mood disorders (Clark & Watson, 1991) suggests that one way forward is to adopt a dimensional rather than categorical approach, making it possible to explore the main and interaction effects of depression- and anxiety-specific symptoms on a given cognitive-affective process. Here we examined how the interplay of anxiety-specific arousal and depression-specific anhedonia symptoms in the same individuals relate to interoceptive (bodily) awareness. 113 participants with varying levels of mood disorder symptoms completed a heartbeat perception task to assess interoceptive accuracy. Superior interoception was associated with anxiety-specific arousal symptoms, and this relationship held when controlling for depression-specific anhedonia symptoms and shared general distress symptoms. This main effect was qualified by an interaction between anhedonia and arousal. As anhedonia symptoms increased in severity, the relationship between arousal and interoceptive accuracy became less strong. These results further validate the tripartite framework, help clarify the mixed existing literature on interoception in mood disorders, and suggest that considering the unique and interactive effects of different symptom dimensions is a useful strategy to help identify the cognitive-affective profiles associated with anxiety and depression.

Differential predictions about future negative events in seasonal and non-seasonal depression

BACKGROUND

Previous research indicates that individuals with seasonal depression (SD) do not exhibit the memory biases for negative self-referent information that characterize non-seasonal depression (NSD). The current study extended this work by examining processing of self-referent emotional information concerning potential future events in SD.

METHOD

SD and NSD patients, along with never-depressed controls, completed a scenario-based measure of likelihood estimation for future positive and negative events happening either to the self or to another person.

RESULTS

SD patients estimated future negative events as more likely to happen to both the self and others, relative to controls. In contrast, in the NSD sample this bias was specific to self-referred material. There were no group differences for positive events.

CONCLUSIONS

These data provide further evidence that the self-referent bias for processing negative information that characterizes NSD can be absent in SD, this time in the domain of future event processing.

Affective Neuroscience: Past, Present, and Future

The discipline of affective neuroscience is concerned with the underlying neural substrates of emotion and mood. This review presents an historical overview of the pioneering work in affective neuroscience of James and Lange, Cannon and Bard, and Hess, Papez, and MacLean before summarizing the current state of research on the brain regions identified by these seminal researchers. We also discuss the more recent strides made in the field of affective neuroscience. A final section considers different hypothetical organizations of affective neuroanatomy and highlights future directions for the discipline.

The consequences of effortful emotion regulation when processing distressing material: a comparison of suppression and acceptance

The present study investigated the consequences of different forms of emotion regulation. Eighty nine healthy participants viewed a distressing video of the aftermath of road traffic accidents under either suppression (of both felt and expressed affect), acceptance, or no-regulation control instructions and the immediate and longer-term consequences on emotion, mood, and memory were examined. Suppression (relative to control) led to reduced subjective experience of fear when viewing the video, but did not alter electrodermal (EDA) or heart rate (HR) response. Subsequently, suppression led to a less marked subjective emotional reaction to positive but not negative emotional images, reduced free recall memory of the video, and a greater likelihood of experiencing zero intrusions of the video's content. Acceptance (relative to control) had no impact when viewing the video, was associated with a less marked increase in EDA activity in the 5 min period immediately after viewing the video, a more marked HR deceleration and EDA response to both positive and negative images, and elevated negative affect at one week follow-up. These findings suggest, contrary to the current clinical zeitgeist, that emotion suppression can successfully lead to an ongoing down-regulation of emotion and memory, whereas acceptance may elevate subsequent emotionality.

A reduction in positive self-judgment bias is uniquely related to the anhedonic symptoms of depression

Identifying patterns of biased cognitive processing specific to depression has proved difficult. The tripartite model of mood disorders [Clark, L. A., & Watson, D. (1991). Tripartite model of anxiety and depression: psychometric evidence and taxonomic implications. Journal of Abnormal Psychology, 100, 316–336] suggests that a clearer processing ‘blueprint’ may emerge if depression is viewed dimensionally rather than categorically and by focusing on variations in the degree of positive, rather than negative, processing bias. To investigate this possibility, the present study examined the extent to which a reduced positive self-judgment bias previously found in depressed individuals relates to depression-specific anhedonic symptoms. Sixty participants with varying levels of anxiety and depression symptoms evaluated their own performance on a working memory task in the absence of external feedback. Overall, participants showed a positive self-judgment bias, overestimating the number of trials they had performed correctly relative to objective criteria. Consistent with the tripartite framework, the extent of this positive self-judgment bias was significantly and uniquely related to depression-specific symptoms, with the positive bias reducing as anhedonia severity increased across three different symptom measures.

Heartbeat perception in depression

Alterations in bodily awareness have been implicated in depression but there has been little detailed empirical characterisation of the degree and accuracy of body perception in the disorder. The present study examined the objective accuracy of heartbeat perception (using the Schandry mental tracking task) and the subjective degree of bodily focus (using the Bodily Consciousness Questionnaire; BCQ) in healthy control volunteers, a moderately depressed community sample, and a more severely depressed clinic sample (n=18 in each group). The community sample showed less accurate heartbeat perception than the control group as expected. Counter to prediction, however, the more severely depressed clinic sample performed better than the community depressed sample and equivalently to control volunteers on the Schandry task. There were no group differences on subjective bodily awareness. Implications for theories of depression are discussed.

The accuracy of self-monitoring and its relationship to self-focused attention in dysphoria and clinical depression

The accuracy with which dysphoric (Study 1) and clinically depressed (Study 2) individuals make self-regulatory judgments about their own performance in the absence of external feedback and the extent to which this relates to trait self-focused attention (SFA) were examined. Relative to objective criteria, both dysphoric and depressed participants showed a positive judgment bias, overestimating the number of trials they had performed correctly. Relative to control participants, the dysphoric and depressed groups showed a reduction in the extent of this positive bias in that they judged error trials more accurately and correct trials less accurately. Although the dysphoric and depressed groups both reported elevated trait SFA, this did not correlate significantly with accuracy of self-judgment on the performance-monitoring task. Implications for self-regulation models of depression are discussed.

The somatic marker hypothesis: A critical evaluation

The somatic marker hypothesis (SMH; [Damasio, A. R., Tranel, D., Damasio, H., 1991. Somatic markers and the guidance of behaviour: theory and preliminary testing. In Levin, H.S., Eisenberg, H.M., Benton, A.L. (Eds.), Frontal Lobe Function and Dysfunction. Oxford University Press, New York, pp. 217-229]) proposes that emotion-based biasing signals arising from the body are integrated in higher brain regions, in particular the ventromedial prefrontal cortex (VMPFC), to regulate decision-making in situations of complexity. Evidence for the SMH is largely based on performance on the Iowa Gambling Task (IGT; [Bechara, A., Tranel, D., Damasio, H., Damasio, A.R., 1996. Failure to respond autonomically to anticipated future outcomes following damage to prefrontal cortex. Cerebral Cortex 6 (2), 215-225]), linking anticipatory skin conductance responses (SCRs) to successful performance on a decision-making paradigm in healthy participants. These 'marker' signals were absent in patients with VMPFC lesions and were associated with poorer IGT performance. The current article reviews the IGT findings, arguing that their interpretation is undermined by the cognitive penetrability of the reward/punishment schedule, ambiguity surrounding interpretation of the psychophysiological data, and a shortage of causal evidence linking peripheral feedback to IGT performance. Further, there are other well-specified and parsimonious explanations that can equally well account for the IGT data. Next, lesion, neuroimaging, and psychopharmacology data evaluating the proposed neural substrate underpinning the SMH are reviewed. Finally, conceptual reservations about the novelty, parsimony and specification of the SMH are raised. It is concluded that while presenting an elegant theory of how emotion influences decision-making, the SMH requires additional empirical support to remain tenable.

Categorical and dimensional reports of experienced affect to emotion-inducing pictures in depression

Self-reported affect to positive and negative emotional pictures was contrasted in people with major depressive disorder (MDD) and never-depressed control participants (n = 25 in each group). The results revealed significant differences in response to positive images (reduced arousal, less pleasant valence, decreased happiness, increased sadness) in MDD but no clear group differences in response to negative stimuli. Extending earlier findings of reduced responsiveness to positive, but not negative, stimuli in MDD (D. M. Sloan, M. E. Strauss, S. W. Quirk, & M. Satajovik, 1997; D. M. Sloan, M. E. Strauss, & K. L. Wisner, 2001), the data indicate that blunted response to positive stimuli is found when both categorical and dimensional ratings are elicited. Further, the data replicate earlier findings of elevated sadness reports to positive stimuli (J. Rottenberg, K. L. Kasch, J. J. Gross, & I. H. Gotlib, 2002), which may reflect broader difficulties in regulating emotions in MDD.

Early detection and differential diagnosis of Alzheimer's disease and depression with neuropsychological tasks

The development of novel treatments for Alzheimer's disease (AD), aimed at ameliorating symptoms and modifying disease processes, increases the need for early diagnosis. Neuropsychological deficits such as poor episodic memory are a consistent feature of early-in-the-course AD, but they overlap with the cognitive impairments in other disorders such as depression, making differential diagnosis difficult. Computerised and traditional tests of memory, attention and executive function were given to four subject groups: mild AD (n = 26); questionable dementia (QD; n = 43); major depression (n = 37) and healthy controls (n = 39). A visuo-spatial associative learning test accurately distinguished AD from depressed/control subjects and revealed an apparent sub-group of QD patients who performed like AD patients. QD patients' performance correlated with the degree of subsequent global cognitive decline. Elements of contextual and cued recall may account for the task's sensitivity and specificity for AD.