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Tim Dalgleish

11 papers in the library · 1,530 citations · publishing 2016-2026

Papers

Efficacy of Mindfulness-Based Cognitive Therapy in Prevention of Depressive Relapse

JAMA Psychiatry April 28, 2016 Willem Kuyken, Fiona C Warren, Rod S Taylor et al. 815 citations

For people with recurrent depression, mindfulness-based cognitive therapy (MBCT) reduces the risk of depressive relapse within a 60-week follow-up period compared with usual care or other active treatments, including antidepressants. A meta-analysis of individual patient data from 9 randomized trials involving 1258 patients (mean age 47.1 years, 75% female) found that those receiving MBCT had a 31% lower risk of relapse versus no MBCT (hazard ratio 0.69), and a 21% lower risk versus other active treatments (hazard ratio 0.79). Sociodemographic and psychiatric variables did not significantly modify the treatment effect, but greater severity of depressive symptoms before treatment was associated with a larger benefit from MBCT.

Research Review: The effects of mindfulness‐based interventions on cognition and mental health in children and adolescents – a meta‐analysis of randomized controlled trials

Journal of Child Psychology and Psychiatry October 22, 2018 Darren Dunning, Kirsty Griffiths, Willem Kuyken et al. 596 citations

A meta-analysis of 33 randomized controlled trials involving 3,666 children and adolescents found that mindfulness-based interventions produce small but significant improvements in mindfulness, executive functioning, attention, depression, anxiety/stress, and negative behaviors compared to control conditions. However, when only the 17 trials with active control groups (1,762 participants) were analyzed, significant benefits were limited to mindfulness, depression, and anxiety/stress, with effect sizes (Cohen's d) of 0.42, 0.47, and 0.18 respectively. The authors conclude that mindfulness interventions can improve youth mental health but note that larger definitive trials are needed to confirm these effects and understand how they work.

Individual participant data systematic review and meta-analysis of randomised controlled trials assessing adult mindfulness-based programmes for mental health promotion in non-clinical settings.

Nature. Mental health July 10, 2023 Julieta Galante, Claire Friedrich, Napaporn Aeamla-Or et al. 102 citations

Mindfulness-based programmes reduce psychological distress (anxiety and depression) in community adults who volunteer to participate, with a small to moderate effect size. The analysis of 13 randomized controlled trials with 2,371 participants from 8 countries found a standardized mean difference of -0.32, with high confidence in the result. The effect was not clearly influenced by participants' baseline distress level, gender, age, education, or dispositional mindfulness. More research is needed to understand why outcomes vary between individuals.

Does mindfulness-based cognitive therapy with tapering support reduce risk of relapse/recurrence in major depressive disorder by enhancing positive affect? A secondary analysis of the PREVENT trial.

Journal of Consulting and Clinical Psychology September 1, 2024 Barnaby D. Dunn, Laura Warbrick, Rachel Hayes et al. 10 citations

Mindfulness-based cognitive therapy with support to taper medication (MBCT-TS) increases positive affect more than continuing antidepressant medication alone, and this increase partly explains the reduced risk of relapse or recurrence in people with recurrent depression. In a randomized trial of 424 adults with three or more prior depressive episodes, MBCT-TS led to significantly greater positive affect at posttreatment compared with maintenance antidepressants. Across both treatments, higher positive affect at intake predicted a lower hazard of relapse over two years. Among participants who had not relapsed by posttreatment, a greater rise in positive affect mediated a reduced risk of subsequent relapse. The findings indicate that boosting positive affect is one mechanism through which MBCT-TS protects against relapse when discontinuing antidepressants.

Examining what works for whom and how in mindfulness-based cognitive therapy (MBCT) for recurrent depression: moderated-mediation analysis in the PREVENT trial.

The British journal of psychiatry : the journal of mental science April 1, 2025 Jesus Montero-Marin, Verena Hinze, Shannon Maloney et al. 4 citations

Mindfulness skills mediate the effect of mindfulness-based cognitive therapy (MBCT) on depressive symptoms over 24 months, and this mediation is stronger for people with more severe depression. Among 424 adults with recurrent depression, those with higher severity showed an expected 10-point reduction on the Beck Depression Inventory-II, compared to a 3.5-point reduction for those with lower severity. The findings suggest MBCT with antidepressant tapering support works through a unique mechanism—mindfulness skills—that differs from maintenance medication alone, supporting personalized treatment for recurrent depression.

Mindfulness-Based Programmes for Work Performance: A Systematic Review and Meta-Analysis of Randomised Controlled Trials.

Stress and health : journal of the International Society for the Investigation of Stress December 1, 2025 Maris Vainre, Tim Dalgleish, Tia Bendriss-Otiko et al. 2 citations

Mindfulness-based programmes (MBPs) modestly improve task performance—the quantity and quality of completed assigned work—immediately after the intervention compared with doing nothing, but not compared with other active activities. The meta-analysis of 99 studies with 16,054 participants also found benefits for adaptive and contextual performance, and effects may persist for months. However, confidence in these results is very low due to limitations in the evidence. Employers and universities subsidize MBPs to boost work performance despite previously unclear evidence.

Work Engagement and Well-being Study (SWELL): a randomised controlled feasibility trial evaluating the effects of mindfulness versus light physical exercise at work.

BMJ mental health February 28, 2024 Maris Vainre, Tim Dalgleish, Peter Watson et al. 1 citation

A randomized trial tested whether a 4-week, self-guided, online mindfulness-based programme could improve work performance compared with a light physical exercise programme among 241 employees from eight employers. Both interventions were highly acceptable, and most participants started the course. The mindfulness programme offered negligible benefits for work performance at both post-intervention and 12-week follow-up. Both interventions improved mental health outcomes, but differences between them were small. The trial was feasible, but results provide little support for a later-phase trial comparing the two approaches, suggesting mindfulness programmes are unlikely to improve work performance beyond light physical exercise.

Symptom worsening in mindfulness-based cognitive therapy

Apollo (University of Cambridge) July 3, 2026 Tim Dalgleish

Mindfulness-based cognitive therapy (MBCT) is widely recommended for preventing depressive relapse, but questions about its safety have emerged. Two recent studies documented meditation-related harm in MBCT but lacked control groups, making it impossible to determine if MBCT increases harm. This preregistered secondary analysis of Kuyken et al's individual participant data meta-analysis evaluates odds of symptom worsening for MBCT versus control conditions within randomized trials, allowing causal inference about treatment-related harm.

Adolescents' trajectories of mental health in the MYRIAD trial.

JCPP Advances October 7, 2025 Carolina Guzman Holst, Simona Skripkauskaite, Jack L. Andrews et al.

Most adolescents (69%-80%) followed stable low-problem trajectories for depression risk, social-emotional-behavioural functioning, wellbeing, and anxiety over a one-year school-based mindfulness intervention trial. However, 11%-23% experienced stable high-problem trajectories, 2%-16% showed increasing problems, and 1%-5% showed decreasing problems. Receiving the mindfulness intervention did not affect which trajectory adolescents followed. Individual factors like executive functioning difficulties and baseline mental health risk, along with school climate, predicted trajectory membership, but these effects did not differ between intervention and control groups. The findings indicate that universal interventions may not address the diverse needs of all students.

Anhedonia Behavioural Activation and Ketamine Therapy (AAKT): Shaping a Proposal With Patient and Public Involvement

BJPsych Open June 1, 2025 Anna Borissova, Allan H. Young, Mitul A. Mehta et al.

In interviews with seven people who had previously received ketamine for treatment-resistant depression, participants were motivated by hope for symptom improvement and a desire to support depression research. They described feeling more open and involved after ketamine and thought it could enhance therapy sessions. They suggested clearer communication that mood changes may not last, providing audiovisual materials to prepare for the infusion experience, and offering check-ins between sessions plus a final session for referrals and support. These insights informed a planned feasibility randomized controlled trial comparing intravenous ketamine plus behavioral activation (n=20) against midazolam plus behavioral activation (n=20) for major depressive disorder with anhedonia.

Universal Mindfulness Training in Schools for Adolescents: a Scoping Review and Conceptual Model of Moderators, Mediators, and Implementation Factors

Prevention Science August 1, 2022 Kate Tudor, Shannon Maloney, Anam Raja et al.

Universal school-based mindfulness training can benefit young people, but it is unclear who benefits most, how it works, and how implementation affects outcomes. A scoping review of 31 studies found mixed evidence on moderators such as age or gender. Five studies showed that increased mindfulness skills and reduced cognitive reactivity and self-criticism after training predicted better outcomes later. Twenty-five studies examined implementation factors, but methodological shortcomings limit conclusions. The authors propose a conceptual model to guide future research and theory development.