Which statement accurately summarizes the way psychologists gather research participants?
A) Psychologists generally use random samples of the population.
B) Psychologists typically use volunteers, often drawn from a university population.
C) Psychologists typically select participants at random from the phone book.
D) Psychologists only select participants who outwardly appear to be of average intelligence.
B) Psychologists typically use volunteers, often drawn from a university population.
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In the second stage of the repeated-measures ANOVA, individual differences are removed from the denominator of the F-ratio
Indicate whether the statement is true or false
Bulimia nervosa is most notably marked by
a. binge eating then fasting. b. binge eating and vomiting. c. partial binge eating and laxative use. d. involuntary vomiting due to over eating.