The purpose of the present experiment was to test a set of related hypotheses regarding teamwork. Previous studies by the author and his colleagues have explored nondirective and democratic leadership in the college class (S, 9). The former was based upon the conceptions of Rogers (8); the latter upon the studies of Lewin and his students (5). The present study takes its departure from Nelson's analysis of the integrative leader (7,11).The integrative leader sees his primary purpose as the development of teamwork and perceives his authority as resting upon informal group codes. It was assumed in the present study that the success of such a leader would be determined by his skill in applying the principles of integrative leadership. A set of tentative principles was inferred from a consideration of laboratory and field studies of group behavior (2,4,6,6,12). Specifically it was assumed that the effective integrative leader would: 1) create work for teams; 2) fit the teams together; 3) encourage interaction on the teams; 4) stabilize the teams; 5) reward the teams as well as the individuals; and 6) let the teams decide.These assumptions concerning the activities of the integrative leader provided the framework from which the set of hypotheses tested in the present study was derived. These hypotheses are numbered below in accordance with the principle to which they are most closely related.1) Students in a team class are more satisfied and more productive than students in a lecture class.2A) Students who like to participate are more satisfied and productive in a team class than those who do not like to participate. BE) Students who are initially better informed about the content of the course are more satisfied and productive in a team class than those who are not.2C) Students who are low in manifest anxiety are more satisfied and productive in a team class than those who are high in anxiety.4) The longer students continue as a team, the more productive they become.