The present study extends earlier research that has examined the extent to which performance on assessment center (AC) dimensions can be differentiated by exercise. That is, previous research has found that distinct AC dimensions can be modeled within each AC exercise, supporting the notion that differences in AC performance across exercises do not reflect measurement bias. However, the relationships between the dimension within exercise factors and theoretically relevant external variables are still unknown. Thus, this paper extends AC research by examining the nomological network of the dimension within exercise ratings. Specifically, this paper compares how the relationships between dimensions within exercise ratings and both personality and mental ability variables (a) differ by the dimension and exercise combination being examined and (b) differ from more commonly used AC rating composites: across exercise dimension ratings, across dimension exercise rating, and the overall assessment rating (OAR).