Decades of Research and a Vast Amount of Literature on Persuasive

Decades of research and a vast amount of literature on persuasive communications are based on the benchmark studies headed by:

A) Hovland who studied the use of wartime propaganda.
B) Asch who undertook pioneering studies of group conformity.
C) Sherif who investigated the experimental induction of group norms.
D) Lewin who explored group dynamics.