This study investigates the relation between indexes of the development of interpersonal construct systems and the qualities of messages generated in response to persuasive tasks within the context of an urban police force. Hypotheses assuming that length of sem'ce as a line officer would predict less &eloped construct systems, and that more developed construct systems would predict message strategies that acknowledge the unique qualities of receivers found general support. In addition, the possibility of further relations between length of service and message variables was explored, but no substantial atidence was found for such effects. These results show the importance of environmental influences on construct development, and suggest that interpersonal perception and message behavior functionally adapt to the needs of organizntional participation.Within the field of communication, constructivist theory (Applegate, 1989;Burleson, 1987;Delia, O'Keefe, & O'Keefe, 1982) focuses on the cognitive and strategic processes that serve as the foundation for human interaction. This position views communication as based upon a system of social cognitive schema (Kelly, 1955) which guide our understanding of people and situations and thereby influence our communicative behavior. Within the constructivist framework these cognitive systems are seen as developing along two conceptually discrete axes: first, the sheer number of constructs available for social perception is thought to increase with development (referred to as "differentiation"); second, the quality of interpersonal constructs is considered to develop from relatively concrete evaluative constructs (tdlshorf) to abstract constructs more reflective of individual dispositions and motivations (securelinsecure). Constructivist research has been directed toward understanding developmental differences in construct systems and their influence on communicative behavior.