An Assessment Center consists of a standardized evaluation of behavior based on multiple evaluations including: job-related simulations, interviews, and/or psychological tests. Job Simulations are used to evaluate candidates on behaviors relevant to the most critical aspects (or competencies) of the job.

Several trained observers and techniques are used. Judgments about behavior are made and recorded. These judgments are pooled in a meeting among the assessors or by an averaging process. In discussion among assessors, comprehensive accounts of behavior, often including ratings, are pooled. The discussion results in evaluations of the performance of the assessees on the dimensions or other variables.