Question

source: wilson, t. d., & schooler, j. w. (1991). thinking too much: introspection can reduce the quality of preferences and decisions. journal of personality and social psychology, 60(2), 181 - 192. what was the primary difference between the control and experimental groups in this experiment? the experimental group saw the experts ratings before tasting the jams, whereas the control group did not. the experimental group tested a different set of jams than the control group. the experimental group was asked to provide reasons for liking or disliking the jams they tasted, whereas the control group was not. the experimental group rated each jam on a 9 - point scale, whereas the control group made a rank order of their preferences.

Explanation:

Based on the research about the impact of introspection on preferences and decisions, typically in such experiments, the key difference often lies in the cognitive - task assigned. The group asked to provide reasons for their likes or dislikes is engaging in more introspection compared to a non - introspective control group.

Answer:

The experimental group was asked to provide reasons for liking or disliking the jams they tasted, whereas the control group was not.