The discovery that psychologically disordered Behavior could result from syphilis infections facilitated The credibility and acceptance of

Doug is conducting a study of gender differences in conversation dyads. He decides to sit in the student center and watch male/male dyads versus female/female dyads. He believes that the distance between the female/female dyads will be much smaller than that between the male/male dyads. When collecting the data, he notes all cases that fit his hypothesis but tends to "miss" most cases that do not

fit his hypothesis. Doug's data collection behavior illustrates the pitfall of a. expectancy effects. b. reactivity. c. expectancy syndrome. d. experimenter blindness.

You are babysitting your three-year-old niece and notice that she is acting very much like a character from a television show. Being an astute psychology student, you reason that you are most likely witnessing:

A. operant conditioning B. instrumental conditioning C. classical conditioning D. cognitive learning