Abstract
The purpose of this study is to determine whether raterroups have different mental models regarding the construct that is being assessed. Sixty-eight marketing employees, working in the petro-chemical industry, were evaluated by themselves, their managers, customers and peers. The performance dimensions included in the Marketing Competency Questionnaire (MCQ) were generated on a consensus basis between representatives of the different rater-groups in an attempt to improve the inter-rater reliabilities of the questionnaire. Item scores were inter-correlated and simplified factor scores were compiled for each of the rater-groups. These simplified factor scores were again intercorrelated and single factors with high internal consistencies for each rater-group were obtained. An inter-battery factor analysis between these factors yielded a single factor with different factor loads from the various rater-groups' factors. The implications for these findings are further discussed.