The process linking organizational citizenship behavior (OCB) with performance judgments was investigated in a field and a laboratory study. In the field study, managers rated the task performance and OCB of 148 subordinates. In the laboratory research, 136 students viewed and rated videotaped segments of teaching performance that demonstrated either high or low task performance and high or low OCB. In both studies, liking and perceived affective commitment mediated the relationship between OCB and overall evaluation. Liking also mediated the relationship between OCB and reward recommendations. Further, the field study indicated that the causal motive attributed by the manager for the employee's OCB mediated the relationship between OCB and overall evaluation.

A theoretical process‐oriented model of affective organizational commitment is presented to explain the psychological mechanisms that may trigger individuals' affective commitment to their organization. An operational version of the model is tested, along with several theoretically based alternative models, using meta‐analytic correlations and structural equations modelling. Results suggest that intrinsic motivation is a partial mediator of the relationship between several exogenous variables (job characteristics and work context variables) and work attitudes (affective organizational commitment and general job satisfaction). In addition, affective commitment and general job satisfaction are related to turnover behaviour, whereas only affective commitment is related to absenteeism. Implications for theory and applied research are discussed.

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The authors proposed employee age as moderating the structural stability of altruistic organizational citizenship behavior (OCB) with regard to the influence of context-relevant attitudes and dispositional variables. Analyses of peer ratings of altruistic OCB in a sample of 96 U.S. nurses showed that the contextual variables of job satisfaction, organizational commitment, and trust in management were germane for the younger participants. The dispositional variable of moral judgment was a unique predictor of altruistic OCB among the older participants.