Why would a researcher want to conduct a meta-analysis of effect sizes?
A) To determine what effect size to use in her study
B) To replicate an experiment
C) To find the average observed effect size of the topic of interest
D) To determine what alpha level she should use
C
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A mother leaves the room and her infant starts to cry. This may represent
a. attachment. b. a personality disorder. c. metacognition. d. theory of mind.
A researcher administers a treatment to a sample of participants selected from a population with ยต = 80 . If a hypothesis test is used to evaluate the effect of the treatment, which combination of factors is most likely to result in rejecting the null hypothesis?
a. A sample mean near 80 with ? = .05 b. A sample mean near 80 with ? = .01 c. A sample mean much different than 80 with ? = .05 d. A sample mean much different than 80 with ? = .01
An evolutionary psychologist would be most interested in the question of ____
a. whether gambling affects brain chemistry and fosters addiction b. how best to assist a person to reduce a propensity to gamble c. whether attraction to gambling varies over the life span d. whether there is an adaptive reason why men tend to gamble more than women
Katrina expresses liking for Lina and often pays her compliments. Katrina's strategies are likely motivated by her desire to appear
A) likable. B) competent. C) moral. D) of high status.