Preference certainty and consistency in repeated choice experiments

The main objective of this study is to examine how repeated choice affects preference learning. We test different hypotheses related to preference refinement and ask respondents in the choice experiment also to report their experienced certainty when going through the choice tasks. In a split-sample test, we show that the follow-up preference certainty questions are procedural invariant. The self-reported certainty results indicate that learning occurs, but econometric testing procedures did not identify any significant impact of learning effects on parameter estimates or variance across choice tasks. A choice consistency test suggests that preferences in choice experiments are stable and coherent.