Presented in summary fashion, this pilot research project, conducted under the auspices of the Miami, Florida Police Department, was an outgrowth of the dual problems of deteriorating police-citizen relationships and escalating societal violence during recent years. The lack of empirical data on police behavior led to the project, limited in scope to the study of the effects of stress, fatigue, and individual psychology of the policeman on the outcomes of police-citizen interactions. The analysis focuses on the uniformed police officer's street contact with the citizen. Project goals were to understand factors influencing police behavior, and to modify police functions accordingly. The pilot study was conducted in three stages: (1) available data were reviewed, new tests procedures evaluated, and police behavior on the street observed; (2) twelve police officer volunteers were tested and observed for six months; (3) data were analyzed. The findings of this study are presented with the authors' recommendations for future research and study regarding selection, training, performance evaluation, and communications systems. (MW)