Conducted 2 experiments with a total of 122 female undergraduates to study 2 discrepancies considered to be important evidence in support of interpersonal comparison (value-adherence) explanations of group induced shifts in choice: (a) the differences between a person’s own choice and the choice he predicts others would make and (b) the difference between the former and the choice he admires. Items from the Choice Dilemma Questionnaire were used in both experiments. Results of Exp I indicate that own choices are more extreme than those a person predicts others would make because he is more certain and confident about the former than the latter. Exp II strongly suggests that extreme choices are admired because they imply that the person’s solution to a problem involving choice is well-founded and that he has persuasive reasons for the choice. On the whole, evidence supports explanations of choice-shift effects based on persuasive argumentation rather than on interpersonal comparison processes. (35 ref) (PsycINFO Database Record (c) 2007 APA, all rights reserved)