Personal profile
Research interests
I am an Associate Professor in Health Psychology at the University of Bath. My research sits at the intersection of behavioural science, digital technology, and mental health. I develop and evaluate scalable behavioural and digital interventions to prevent and treat depression and anxiety, particularly among adolescents and young adults and those with elevated depressive symptoms.
My work integrates behavioural activation and reinforcement principles to increase engagement in meaningful, health-promoting activities. I focus on three interconnected areas: (1) physical activity and lifestyle approaches for mental health; (2) healthier engagement with digital and social media environments; and (3) brief digital behavioural interventions. Increasingly, I explore the responsible use of generative AI to enhance the personalisation, accessibility, and scalability of mental health support.
I am Co-Director of the Spotlight on Adolescent and Young Adult Mood Problems (LAMP) research group and a Co-Investigator and Work Package Lead within the £10.7m NIHR Bath Mental Health Research Group, a multidisciplinary programme addressing youth mental health across the region. I also contribute to externally funded projects supported by NIHR, ESRC, GW4, and international collaborators.
I am a Chartered Psychologist (BPS), Fellow of the Higher Education Academy, Pathway Lead for the ESRC SWDTP Health, Wellbeing and Society pathway, and Director of Studies for the ESRC-recognised MRes in Health, Wellbeing and Society.
Other responsibilities
I am on the editorial board for Mental Health and Physical Activity and have reviewed widely for national and international journals.
Teaching interests
I teach across a range of subject areas including exercise and health psychology, physical activity and mental health, behaviour change and qualitative and quantitative research methods.
Education/Academic qualification
Doctor of Philosophy, University of Exeter
Award Date: 1 Jun 2018
Health Psychology, Master of Science, University of Southampton
Award Date: 1 Aug 2012
Psychology , Bachelor of Science, University of Winchester
Award Date: 1 Aug 2010
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 3 Good Health and Well-being
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Collaborations and top research areas from the last five years
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Bath NIHR Mental Health Research Group
Jacobsen, P. (PI), Betts, J. (CoI), Brown, C. (CoI), Button, K. (CoI), Fairchild, G. (CoI), Freeman, T. (CoI), Halligan, S. (CoI), Hines, L. (CoI), Lambert, J. (CoI), Loades, M. (CoI), Russell, A. (CoI), Stallard, P. (CoI), Sunderland, P. (CoI) & Taylor, E. (CoI)
National Institute for Health Research
1/01/25 → 31/12/29
Project: Central government, health and local authorities
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Detecting temporal patterns in the relationship between physical activity and mood using ecological momentary assessment (EMA).
Lambert, J. (PI)
Project: Project at a former HEI
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GW4 Men’s Mental Health Research Group
Barry, T. (PI) & Lambert, J. (CoPI)
13/05/24 → 31/12/24
Project: Research-related funding
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Using app-based behavioural activation to promote physical activity and reduce depresive symptoms in adult men living with depression (the eMotion app)
Lambert, J. (PI)
Avon and Wiltshire Mental Health Partnership NHS Trust
1/08/21 → 30/09/22
Project: Central government, health and local authorities
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Digital Facilitation
Lambert, J. (PI)
National Institute for Health Research
1/06/20 → 31/12/22
Project: Central government, health and local authorities
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Immediate Effects and Experiences of a Digital Single-Session Behavioural Activation Based Intervention for Adolescents: A Single Arm Pre-post Programme Evaluation of Project ABC in the UK
Munir, S., Perry, G., Lambert, J. & Loades, M., 19 Mar 2026, (E-pub ahead of print) In: Clinical Child Psychology and Psychiatry.Research output: Contribution to journal › Article › peer-review
Open Access -
Parents' experiences of their adolescent child's depression: a qualitative systematic review and meta-synthesis
Kika, N., Lambert, J., Higson-Sweeney, N., Wallace, V., Bhatt, H., Perry, G., Reynolds, S. & Loades, M., 9 Jan 2026, In: BMC Psychology. 14, 1, 188.Research output: Contribution to journal › Article › peer-review
Open Access -
Adapting a behavioural activation-based self-help online Single Session Intervention designed for adolescents to meet the needs of young adults in the UK
Jenkins, T., Dallison, S., Wallace, I., Haywood, M., Perry, G., Nisar, A., Lambert, J. & Loades, M., Sept 2025.Research output: Contribution to conference › Poster › peer-review
Open AccessFile22 Downloads (Pure) -
Impact of home-based cardiac rehabilitation in people with heart failure with elevated depressive and anxiety symptoms: a secondary analysis of the REACH-HF randomized trials
Lambert, J., Dibben, G., van Beurden, S., Bollen, J., Dalal, H., Blakemore, A. & Taylor, R. S., 15 Oct 2025, In: European Journal of Cardiovascular Nursing . zvaf196.Research output: Contribution to journal › Article › peer-review
Open Access -
Integrating Artificial Intelligence in Youth Mental Health Care: Advances, Challenges, and Future Directions
Marshall, N., Loades, M., Jacobs, C., Biddle, L. & Lambert, J., 10 Apr 2025, In: Current Treatment Options in Psychiatry. 12, 1, 11.Research output: Contribution to journal › Review article › peer-review
Open Access3 Link opens in a new tab Citations (SciVal)