Social psychology
Our aim has been to write a systematic presentation of social psychology that emphasizes the experimental approach...Social psychology is a subdiscipline of psychology that especially involves "the scientific study of the behavior of individuals as a function of social stimuli". This definition seems to say something important and to say it with pedantic precision...By the end of World War II, the way was paved for an outpouring of experimental research involving the manipulation of experimental subjects' temporary social environment and an examination of the effects of this manipulation on attitudes, behavior, and various emotional states. Questions of behavioral causation could now be examined with closer scrutiny than was possible through questionnaires and interviews. The outlines of an empirical, and especially an experimental, social psychology have clearly emerged.