Factors Affecting Validity of a Regionally Administered Assessment Center

Validity coefficients for a single assessment center implemented in multiple locations are presented. Correction for range restriction, criterion unreliability, and sampling error did not account for a large portion of the variability in these validity coefficients. The type of assessor used, the center's administrative arrangement, and prior assessor‐assessee contact moderated these validities. It is suggested that the quality of the implementation of a selection procedure when there is local latitude in its implementation is an important factor in determining the procedure's effectiveness.