Doug Is Conducting a Study of Gender Differences in Conversation

Multiple Choice

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.