Previous factor analytic work (Sackett and Dreher, 1982) has found exercise factors, rather than the expected dimension factors, underlying ratings made in managerial assessment centers. The present paper responds to criticisms that inappropriate analyses were conducted and that unrepresentative assessment centers were studied. Exercise factors were found to predominate in two new sets of assessment data which we obtained and in three studies published by other authors, thus indicating that the results were not idiosyncratic to the three centers studied by Sackett and Dreher. Analyses using confirmatory, rather than exploratory, factor analysis also support the dominance of exercise factors. Although dimension factors were found in three of four data sets studied, variables loading on a dimension factor consistently loaded more highly on an exercise factor as well.