This paper investigated the effects of negative affect by odors and involvement with the choice task on the decision-making process. Sixty-two male undergraduates were asked to select one of ten tape recorders, either for actual use of the tape recorder (high involvement condition) or for fictitious use (low involvement condition). The results showed that, in high involvement with the task, people in whom negative affect had been induced tended to search information more slowly and redundantly, and to feel the choice more difficult than did subjects in a neutral affect condition and in low involvement condition. These results were interpreted in terms of a resource allocation model (Ellis & Ashbrook, 1988).