title: Order Effects in Preference Judgments: Evidence for Context Dependence in the Generation of Preferences.
abstract: This paper explores the cognitive processes at work in preference generation. It tests the hypothesis that the evaluation process relies on a comparative context of alternatives. Participants in two experiments reviewed pairs of options that included one superficially attractive option and another that was normatively superior in some way but superficially unattractive. Experiment 1 (N = 116) found that when the superficially attractive option was rated first, reported preferences for both options were higher than when the less attractive alternative was rated first. Experiment 2 (N = 177) replicated this order effect on preferences using six pairs of options. I obtained process measures that suggest the effect is attributable to the process by which people generate judgments of preference. Options are rated more positively to the extent that they compare favorably to other real or imagined alternatives; options are rated more negatively to the extent that they compare poorly to their alternatives. These two experiments contribute to the literature on preference generation by specifying a process by which people generate preferences. Copyright 1999 Academic Press.