Related Experiment Video
Updated: Sep 23, 2025

Author Spotlight: A Novel Setup to Conduct Naturalistic Laboratory Experiments with Real Human Actors in Scenarios
Published on: August 4, 2023
External validity of social psychological experiments is a concern, but these models are useful
Youri L Mora1, Olivier Klein1, Christophe Leys1
1Center for Social and Cultural Psychology, Université libre de Bruxelles, CP 122, 50-1050 Bruxelles, Belgium. Youri.mora@ulb.be Olivier.klein@ulb.be Christophe.leys@ulb.be https://cescup.ulb.be/member/youri-mora/ https://cescup.ulb.be/member/olivier-klein/ https://cescup.ulb.be/member/christophe-leys/.
Abstract:
We agree that external validity of social psychological experiments is a concern, we disagree these models are useless. Experiments, reconsidered from a situated cognition perspective and non-linearly combined with other methods (qualitative and simulations) allow grasping decision dynamics beyond bias outcomes. Dynamic (vs. discrete) insights regarding these processes are key to understand missing forces and bias in real-world social groups.
Related Concept Videos
The Scientific Method
Scientific Nature of Social Psychology
Defining Social Psychology
Theory of Attribution II: Kelley's Covariation Theory
Social Proof
Causes of Similarity-Dissimilarity Effect

