Dr Leonardo Cohen


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 also research how to create more efficient warnings and disclaimers which can help individuals make better decisions.

Recent research projects include group decision-making in boards of trustees of pension schemes for the Institute and Faculty of Actuaries, and risk and blame attribution by consumers using smart products for the Department for Business, Energy & Industrial Strategy.

Before entering academia, I worked as a management and strategy consultant for corporate and investment banks.

Academic responsibilities

Lecturer in Cognitive Psychology


  • Postdoctoral Research Fellow, Leeds University Business School, 2019-2021
  • Postdoctoral Research Associate, City University of London, 2018
  • PhD in Experimental Psychology, UCL, 2017
  • MSc Cognitive and Decision Sciences, UCL, 2012
  • MSc Finance and Economics, LSE, 2000
  • BSc Economics, PUC-RJ, Brazil, 1998

Teaching and learning

I teach on the following modules:

  • PS4002: Foundations of Psychology
  • PS5003: Brain, Behaviour, and Cognition
  • PS6008: Advanced Issues in the Psychology of Thinking
  • PS7002: Research Design and Analysis
  • PS7020: Applications of Behavioural Decision Science
  • PS7021: The Psychology of Thinking, Judgement, and Decision-Making


Areas of specialism

  • Decision-making
  • Risk and probabilities
  • Warning labels and disclaimers
  • Financial decision-making


Jump to: Article
Number of items: 14.


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

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

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, ISSN (print) 0264-410X (Epub Ahead of Print)

Weiss-Cohen, Leonardo, Ayton, Peter, Clacher, Iain and Thoma, Volker (2021) Pension scheme trustees as surrogate decision makers. Finance Research Letters, p. 102043. ISSN (print) 1544-6123 (Epub Ahead of Print)

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

Weiss-Cohen, L., Newall, P. W. S. and Ayton, Peter (2021) Persistence is futile : chasing of past performance in repeated investment choices. Journal of Experimental Psychology : Applied, ISSN (print) 1076-898X (Epub Ahead of Print)

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

This list was generated on Mon Jul 4 06:51:17 2022 BST.