No adaptive strategy selection without outcome feedback

Abstract

Summary Information redundancy in multi-attribute decision making is widely considered to influence strategy selection. Experimental support comes from Dieckmann and Rieskamp (2007) - they found that in high-redundancy environments participants use lexicographic strategies more than in low-redundancy environments. We replicate their Experiment 2, add conditions with stricter experimental controls, and investigate possible underlying mechanisms. In conditions with stricter controls we find no evidence that participants manage to incorporate information redundancy into strategy selection.