Differential responding to positive and negative items: the case of a negative item in a questionnaire for course and faculty evaluation

Previous factor-analytic studies of self-rating scales have yielded a factor on which negatively worded items loaded separately. The present study investigated the existence for such a factor in a questionnaire for course and teacher evaluation which included one negative item. The questionnaire was administered in 1,095 university classes. Two factors emerged, an exclusively positive-item factor and another factor on which the single negative item and one positive item loaded. It was suggested that both items of Factor 2 were ambiguous and may identify tendencies such as acquiescence, random responding, and response sets.