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Trefor joined the psychology department in Aberystwyth as a lecturer in 2019. His research, in the areas of health and clinical psychology, includes research on the framing of health promotion messages, and in the use of talking therapies for treating depression and anxiety.
Trefor obtained his PhD from Bangor University in 2010, looking at health related behaviours, message framing and motives. After obtaining his PhD he went on to work in Royal Holloway University as a research assistant and later as a trial manager. Prior to joining the psychology department here in Aberystwyth, Trefor worked in University College London for five years as a senior research associate. During his time in UCL, he managed two randomised controlled trials looking at the effectiveness of Cognitive Behavioural Therapy for depression in patients with advanced cancer, and in older victims of crime. Whilst at UCL Trefor also gained experience lecturing on the Clinical Mental Health Sciences MSc course.
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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SDG 10 Reduced Inequalities
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SDG 16 Peace, Justice and Strong Institutions
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Collaborations and top research areas from the last five years
Profiles
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Shaima Yousef Hasan Shehab Alhosani
Person: Doctor of Professional Studies
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Life satisfaction around the world: Measurement invariance of the Satisfaction With Life Scale (SWLS) across 65 nations, 40 languages, gender identities, and age groups
Swami, V., Stieger, S., Voracek, M., Aavik, T., Ranjbar, H. A., Adebayo, S. O., Afhami, R., Ahmed, O., Aimé, A., Akel, M., Halbusi, H. A., Alexias, G., Ali, K. F., Alp-Dal, N., Alsalhani, A. B., Álvarez-Solas, S., Amaral, A. C. S., Andrianto, S., Aspden, T. & Argyrides, M. & 233 others, , 22 Jan 2025, In: PLoS ONE. 20, 1, 34 p., e0313107.Research output: Contribution to journal › Article › peer-review
Open AccessFile23 Citations (Scopus)32 Downloads (Pure) -
Self-Compassion Around the World: Measurement Invariance of the Short Form of the Self-Compassion Scale (SCS-SF) Across 65 Nations, 40 Languages, Gender Identities, and Age Groups
Swami, V., Tran, U. S., Voracek, M., Aavik, T., Ranjbar, H. A., Adebayo, S. O., Afhami, R., Ahmed, O., Aimé, A., Akel, M., Al Halbusi, H., Alexias, G., Ali, K. F., Alp-Dal, N., Alsalhani, A. B., Álvarez-Solas, S., Amaral, A. C. S., Andrianto, S., Aspden, T. & Argyrides, M. & 233 others, , 30 Jun 2025, In: Mindfulness. 16, p. 1569–1596 28 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile14 Citations (Scopus)59 Downloads (Pure) -
Exposure and connectedness to natural environments: An examination of the measurement invariance of the Nature Exposure Scale (NES) and Connectedness to Nature Scale (CNS) across 65 nations, 40 languages, gender identities, and age groups
Swami, V., White, M. P., Voracek, M., Tran, U. S., Aavik, T., Ranjbar, H. A., Adebayo, S. O., Afhami, R., Ahmed, O., Aimé, A., Akel, M., Al Halbusi, H., Alexias, G., Ali, K. F., Alp-Dal, N., Alsalhani, A. B., Álvarez-Solas, S., Soares Amaral, A. C., Andrianto, S. & Aspden, T. & 233 others, , 30 Nov 2024, In: Journal of Environmental Psychology. 99, 23 p., 102432.Research output: Contribution to journal › Article › peer-review
Open AccessFile28 Citations (Scopus)95 Downloads (Pure) -
Mind the gap: Development and validation of an evolutionary mismatched lifestyle scale and its impact on health and wellbeing
O, J., Aspden, T., Thomas, A. G., Chang, L., Ho, M.-H. R., Li, N. P. & van Vugt, M., 15 Aug 2024, In: Heliyon. 10, 15, 14 p., e34997.Research output: Contribution to journal › Article › peer-review
Open AccessFile5 Citations (Scopus)4 Downloads (Pure) -
Body appreciation around the world: Measurement invariance of the Body Appreciation Scale-2 (BAS-2) across 65 nations, 40 languages, gender identities, and age
Swami, V., Tran, U. S., Stieger, S., Aavik, T., Ranjbar, H. A., Adebayo, S. O., Afhami, R., Ahmed, O., Aimé, A., Akel, M., Halbusi, H. A., Alexias, G., Ali, K. F., Alp-Dal, N., Alsalhani, A. B., Álvares-Solas, S., Amaral, A. C. S., Andrianto, S., Aspden, T. & Argyrides, M. & 233 others, , 01 Sept 2023, In: Body Image. 46, p. 449-466 18 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile86 Citations (Scopus)160 Downloads (Pure) -
Problem-Solving Treatment for People Recently Diagnosed with Visual Impairment: Pilot Randomised Controlled Trial
Riazi, A., Aspden, T., Rubin, G., Ambler, G., Jichi, F., Mynors-Wallice, L., O'Driscoll, M. & Walters, K., 31 Aug 2022, In: Journal of Personalized Medicine. 12, 9, 11 p., 1431.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Citations (Scopus)60 Downloads (Pure) -
Views of healthcare professionals on recruiting to a psychosocial randomised controlled trial: A qualitative study
Aspden, T., Armstrong, M. & Serfaty, M., 18 Aug 2021, In: BMC Health Services Research. 21, 1, 10 p., 837.Research output: Contribution to journal › Article › peer-review
Open AccessFile5 Citations (Scopus)47 Downloads (Pure) -
A pragmatic approach to measuring adherence in treatment delivery in psychotherapy
Serfaty, M., Shafran, R., Vickerstaff, V. & Aspden, T., 02 Sept 2020, In: Cognitive Behaviour Therapy. 49, 5, p. 347-360 14 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile12 Citations (Scopus)105 Downloads (Pure) -
Effectiveness of cognitive-behavioural therapy for depression in advanced cancer: CanTalk randomised controlled trial
Serfaty, M., King, M., Nazareth, I., Moorey, S., Aspden, T., Mannix, K., Davis, S., Wood, J. & Jones, L., 01 Apr 2020, In: British Journal of Psychiatry. 216, 4, p. 213-221 9 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile39 Citations (Scopus)38 Downloads (Pure) -
The clinical and cost effectiveness of a Victim Improvement Package (VIP) for the reduction of chronic symptoms of depression or anxiety in older victims of common crime (The VIP trial): Study protocol for a randomised controlled trial
Serfaty, M., Aspden, T., Satchell, J., Kessel, A., Laycock, G., Brewin, C., Buszewicz, M., O'Keeffe, A., Hunter, R., Leavey, G., Cumming-Higgs, J., Drennan, V., Riveros, M., Andrew, D. & Blanchard, M., 16 Apr 2020, In: Trials. 21, 1, p. 1-11 11 p., 333.Research output: Contribution to journal › Article › peer-review
Open AccessFile10 Citations (Scopus)118 Downloads (Pure) -
Manualised cognitive behavioural therapy in treating depression in advanced cancer: The CanTalk RCT
Serfaty, M., King, M., Nazareth, I., Moorey, S., Aspden, T., Tookman, A., Mannix, K., Gola, A., Davis, S., Wood, J. & Jones, L., 17 May 2019, In: Health Technology Assessment. 23, 19, p. 1-106 106 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile34 Citations (Scopus)324 Downloads (Pure)
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BPS_ALPS: BPS apprenticeship for Aberystwyth Longitudinal Psychology Study – ALPS
Taylor, A. (Project Lead), Aspden, T. (Project Co‑Lead) & Musselwhite, C. (Project Co‑Lead)
01 Jun 2026 → 24 Jul 2026
Project: Externally funded research
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Measuring the psychological benefits of experiencing nature
Aspden, T. (Project Lead)
01 Dec 2021 → 30 Sept 2022
Project: Externally funded research