MISSING INFORMATION IN SELECTION - AN APPLICATION OF THE EINHORN-HOGARTH AMBIGUITY MODEL

This article argues that the devaluation of options with missing infor mation, found in previous research, is a specific example of ambiguity avoidance in choice. H. J. Einhorn and R. M. Hogarth's(1985) ambiguit y model was used to make predictions concerning responses to missing i nformation in an employee-selection context. A within-subjects design was used to test the hypothesis that decision makers would avoid optio ns with missing information when they were anticipating gain, but they would prefer such options when they were anticipating loss. Degree of ambiguity was expected to interact with this effect. The results supp orted the hypothesized effect of decision-maker perspective on choice. However, although there was a significant interaction between decisio n-maker perspective and degree of ambiguity, it was not of the nature that was predicted by the Einhorn-Hogarth model. Generalized pessimism was negatively correlated with preferences for missing-information op tions.