The Chicago Committee on the Behavioral Sciences occupies a special place in the eponymous movement. Involving prominent figures such as psychologist James G. Miller and neurophysiologist Ralph W. Gerard, this committee embodied the common belief among behavioral scientists that a cross‐disciplinary approach using natural science methods was key to understanding major issues facing mid‐century American society. This interdivisional committee fell under the jurisdiction of both the natural and social sciences. As such, its flagship project, an institute of mental sciences, had to face the reluctance both of natural scientists who thought it inadequately scientific and of social scientists who regard its efforts as too narrow in scope and too biological in orientation. Though it failed in its main objective to create an institute, the committee was a formidable instrument of intellectual stimulation and socialization for its members. It provided them with an opportunity to familiarize themselves with each other's scientific backgrounds, practices and jargons, realize the significance of academic cultural differences and learn ways to accommodate them.