When we have related samples, the best measure of the effect size uses
a. the standard deviation of the difference scores.
b. the standard deviation of the pretest scores (if they exist).
c. the pooled estimate of the pre- and post-score standard deviations.
d. none of the above
B
You might also like to view...
Several of your classmates are volunteering at a nursing home for extra credit, and they tell you how much fun they are having helping with the "parties" and the weekly activities for the residents. Although you had planned to do the article assignment for extra credit, you change your mind and decide to volunteer at the nursing home. Your new attitude was formed because of
a. direct contact. b. an interaction with others. c. chance conditioning. d. group membership.
Which male has erectile dysfunction based on a primarily psychological cause?
a. Bill, whose inability is caused by a physiological problem with which he was born b. Charlie, who does not have spontaneous erections c. Emmett, who has never had an erection sufficient for intercourse d. Del, who has nocturnal penile tumescence
Regarding the popular pseudopsychology of astrology, which of the following statements is FALSE?
a. If astrologers are asked to match people with their horoscopes, they do significantly better than would be expected by chance. b. Astrologers have failed to scientifically explain why the positions of the planets at birth affect a person's future or why the moment of birth is more important than the moment of conception. c. When the people in a study were sent a full 10-page horoscope of a famous mass murderer, 94 percent accepted it as their own. d. One study of more than 3,000 predictions by famous astrologers found that only a small percentage were fulfilled.
According to the authors of your text, why are attitudes important?
a. They determine what we do. b. They are a crucial part of the self. c. They are key to eliminating prejudice. d. They are malleable in different situations.