Skip to main content
I am an experimental psychologist, and I obtained my PhD from UCL investigating decisions from descriptions and experience.
My research focuses on decisions under uncertainty, in particular investigating how individuals combine risk and probability information from different sources when making decisions. I am interested in how descriptive and experiential information are combined and integrated when individuals make decisions. I have recently been awarded a small research grant by the British Academy/Leverhulme to explore decisions made using a combination of descriptive and experiential information.
I also research how to create more efficient warnings and disclaimers which can help individuals make better decisions.
Recent research projects the evaluation of safer gambling message employed in the UK, the development of better disclaimers to help individuals make better financial and investment decisions, and how disclaimers can influence the attribution of blame when using smart products (in collaboration with the UK Government's Department for Business, Energy & Industrial Strategy).
Before entering academia, I worked as a management and strategy consultant for corporate and investment banks.
Lecturer in Cognitive Psychology
I am module leader for PS7002 - Research Design and Analysis - which is provides an advanced coverage of the design and analysis of psychological research. In addition to statistical methods, my research-based teaching revolves around cognitive psychology (learning and memory) with a special focus on theory and applications of decision-making.
I also teach on the following modules:
Feel free to contact me if you have any questions about any of these topics.
Newall, Philip W. S., Hayes, Ty, Singmann, Henrik, Weiss-Cohen, Leonardo, Ludvig, Elliot A. and Walasek, Lukasz (2023) Evaluation of the "take time to think" safer gambling message : a randomised, online experimental study. Behavioural Public Policy, ISSN (print) 2398-063X (Epub Ahead of Print)
Newall, Philip W. S., Weiss-Cohen, Leonardo, Thoma, Volker and Ayton, Peter (2022) Differences amongst estimates of the UK problem gambling prevalence rate are partly due to a methodological artefact. International Journal of Mental Health and Addiction, ISSN (print) 1557-1874 (Epub Ahead of Print)
Weiss-Cohen, L., Newall, P. W. S. and Ayton, Peter (2022) Persistence is futile : chasing of past performance in repeated investment choices. Journal of Experimental Psychology : Applied, 28(2), pp. 341-359. ISSN (print) 1076-898X
Newall, Philip W. S. and Weiss-Cohen, Leonardo (2022) The gamblification of investing : how a new generation of investors is being born to lose. International Journal of Environmental Research and Public Health, 19(9), p. 5391. ISSN (online) 1660-4601
Newall, Philip W. S., Weiss-Cohen, Leonardo, Singmann, Henrik, Walasek, Lukasz and Ludvig, Elliot A. (2022) Impact of the "when the fun stops, stop" safer gambling message on online gambling behaviour : a randomised online experimental study. The Lancet Public Health, 7(5), e437-e446. ISSN (online) 2468-2667
Newall, Philip W.S., Weiss-Cohen, Leonardo, Singmann, Henrik, Boyce, W. Paul, Walasek, Lukasz and Rockloff, Matthew J. (2022) A speed-of-play limit reduces gambling expenditure in an online roulette game : results of an online experiment. Addictive Behaviors, 127, p. 107229. ISSN (print) 0306-4603
Murray, Jennifer, Dhamib, Mandeep K., McClatchey, Kirstie, Weiss-Cohen, Leonardo and Ayton, Peter (2022) Health, wellbeing, and social interaction : an international and demographic analysis of perceived life changes and the positives and negatives of the COVID-19 lockdown. Europe's Journal of Psychology, ISSN (online) 1841-0413 (In Press)
Ayton, Peter, Weiss-Cohen, Leonardo and Barson, Matthew (2022) Magical contagion and commemorative plaques : effects of celebrity occupancy on property values. Journal of Environmental Psychology, 79, p. 101723. ISSN (print) 0272-4944
Weiss-Cohen, Leonardo, Ayton, Peter, Clacher, Iain and Thoma, Volker (2022) Pension scheme trustees as surrogate decision makers. Finance Research Letters, 44, p. 102043. ISSN (print) 1544-6123
Silas, Jonathan, Jones, Alexander, Weiss-Cohen, Leonardo and Ayton, Peter (2021) The seductive allure of technical language and its effect on covid-19 vaccine beliefs and intentions. Vaccine, 39(52), pp. 7590-7597. ISSN (print) 0264-410X
Weiss‐Cohen, Leonardo, Konstantinidis, Emmanouil and Harvey, Nigel (2021) Timing of descriptions shapes experience‐based risky choice. Journal of Behavioral Decision Making, 34(1), pp. 66-84. ISSN (print) 0894-3257
Ayton, Peter and Weiss-Cohen, Leonardo (2021) Smoking versus vaping : how (not) to communicate their relative harms. Journal of Risk Research, 24(2), pp. 198-214. ISSN (print) 1366-9877
Weiss-Cohen, Leonardo, Ayton, Peter and Clacher, Iain [Auditor] (2020) Extraneous menu-effects influence financial decisions made by pension trustees. Economics Letters, 187, p. 108895. ISSN (print) 0165-1765
Weiss-Cohen, Leonardo, Ayton, Peter, Clacher, Iain and Thoma, Volker (2019) Behavioral biases in pension fund trustees' decision making. Review of Behavioral Finance, 11(2), pp. 128-143. ISSN (print) 1940-5979
Weiss-Cohen, Leonardo, Konstantinidis, Emmanouil, Speekenbrink, Maarten and Harvey, Nigel (2018) Task complexity moderates the influence of descriptions in decisions from experience. Cognition, 170, pp. 209-227. ISSN (print) 0010-0277
Weiss-Cohen, Leonardo, Konstantinidis, Emmanouil, Speekenbrink, Maarten and Harvey, Nigel (2016) Incorporating conflicting descriptions into decisions from experience. Organizational Behavior and Human Decision Processes, 135, pp. 55-69. ISSN (print) 0749-5978