A two-dimensional, four-category model for classifying the way that people relate to others, or relationship style, was developed by T. Alessandra (1987). The model characterizes style in terms of openness, with poles of open and self-contained, and directness, with poles of direct and indirect. Combining the poles of the two dimensions yields the relationship types of: (1) director; (2) thinker; (3) socializer; and (4) relater. These dimensions were used to create a 16-item semantic differential scale called the Test of Relationship Style. After an initial test with 100 undergraduates, the instrument was administered to 58 men and 96 women participating in an amateur tennis tournament, who also completed measures of goal and task orientation, sportsmanship, mood, and liking for challenge. Subjects were classified into the four relationship styles and compared for the other measures. Directors tended to be male, tennis singles players, with poor sportsmanship, high ego orientation, and a good bit of anger, while relaters were women with low ego orientation, doubles players, with little inclination for challenge. Socializers were more likely to be women with good sportsmanship attitudes, little anger, and an inclination to be challenged. Thinkers were likely to be in the middle on most things. Findings conformed to anecdotal descriptions of the four relationship styles, providing some confirmation of validity. (Contains one table, two figures, and six references.) (SLD)