Effect size
a. Is the same thing as statistical significance
b. Reflects the strength of relationship between the independent and dependent variables
c. Is unrelated to statistical significance
d. Shows the relationship of a population to a sample
b
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According to the research on children's friendships,
a. boys are more likely than girls to engage in self-disclosure with their friends. b. girls tend to have a larger number of friends than boys do. c. when playing with their friends, boys are more likely than girls to enjoy playing games that have rules. d. boys are more likely than girls to have friends who do not know each other.
Researchers studying the relationship between placebo effects and the cost of medicine reported:
A. the placebo effects depend on both the cost and the patient's perception of the doctor's competence B. no relationship was found C. the pricier the pill, the stronger the placebo effects D. the pricier the pill, the weaker the placebo effects
Which of the following is the primary advantage of the experimental method?
a. It allows scientists to draw cause-and-effect conclusions. b. It allows the study of natural observation. c. It avoids over control of a measure. d. It has no ethical concerns compared to other methods.
A completely randomized design is:
a. a between-subjects design. b. a within-subjects design. c. a correlational design. d. highly susceptible to low interrater reliability.