What are phi coefficients?
a. The correlation between two dichotomous variables
b. The correlation between two sets of test scores
c. The correlation between a test item and the total test score
d. They correlation of item difficulty and item bias
a. The correlation between two dichotomous variables
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Unless a study is justified from a scientific perspective, and if participants know about important and harmful aspects of the study that might influence their decision to participate, psychologists are expected to deceptive research
a. refrain from b. conceptualize c. debrief following d. clarify all
Group selection as an explanation for altruistic behavior would argue that ____.
A. individuals are more likely to reproduce when stress is low B. individuals pick their groups based on how altruistic they are C. cooperative groups thrive better than do uncooperative groups D. society benefits as a whole when individuals help each other
Human societies show
A. uniform levels of all types of violence. B. uniform levels of premeditated but not impulsive violence. C. uniform levels of impulsive but not premeditated violence. D. wide variations in their rates of violence.
According to a 2011 national sample in the U.S., most children had watched TV by the time they were ________________
a. 2 weeks old b. 1 year old c. 6 months old d. 9 months old