This study investigates international broadcasters' exchanges carried out during the postwar years. It is divided into 15 chapters. Chapter One gives general background. Chapter Two describes the seminar and Chapter Three the design of the evaluation study. Chapter Four discusses the seminar participants' reactions to the university phase of the seminar, and Chapter Six to the travel phase. Chapter Seven presents their retrospective reactions to the seminar as a whole. Chapter Five includes a brief discussion of the seminar staff's reactions to the university phase of the program. Chapters Eight to Twelve focus on the impact of the experience on the participants' attitudes and images. Chapter Eight discusses their views of what the sojourn had meant to them personally. Chapter Nine describes their views of America and American broadcasting in the light of their experiences. Chapter Ten provides some basis for assessing the extent to which the American sojourn had actually affected participants' attitudes. The findings in Chapters Eleven and Twelve are based on written questionnaires. Chapters Thirteen and Fourteen present analyses of the reactions to the sojourn among different groups of participants and the impact it had upon them. The fifteenth chapter brings together the major implications of the findings for improving the conduct of international exchange programs, for assessing their outcomes, and for understanding the psychological processes they set into motion. (Author/CK)