Preliminary research has demonstrated that not all assessment center (AC) exercises are viewed as equally just or motivating. The current research builds upon this research and investigates the relationships between six AC exercises and perceptions of self-efficacy, motivation, assessor bias, and fairness. Using a 2 × 2 × 2 experimental design (two informational justice interventions and one rating timing intervention), 286 working adults completed a survey designed to investigate differences between AC exercises and to investigate interventions designed to influence AC exercise perceptions. The results show not only significant perceptual differences between assessor-rated exercises and an ability test but also differences among the rated exercises. The results suggest that an ability test can be perceived as both among the most just and motivating exercises. Lastly, even though the experimental interventions did not have their anticipated effects, the results suggest benefits to having assessors rate recorded participant behaviors versus rating “live” behaviors, benefits that to a certain extent depend on whether participants had previously attended an assessment center.