Any stimulus that follows a behavior and increases the likelihood that the behavior will be repeated is called a ______

Car salesmen often encourage a test drive. Perhaps they know about ___________

a. the door-in-the-face approach b. Leon Festinger c. the foot-in-the-door approach d. making large requests first

The ONLY research method that can identify cause-and-effect relationships between variables is _____

a) the experimental method. b) naturalistic observation. c) the correlational method. d) the case study.