Ricky tried to dye his hair black but left the dye on too long; clumps of his hair fell out completely, leaving weird bald patches on his scalp. The kids at school snickered at him, ignored him, and avoided him at lunchtime for a couple of weeks. After that, though, everyone forgot about it. Thus Ricky was subjected to a short-term bout of ____

If a researcher wanted to see if people in a good mood are more likely to assist others who need help, he or she could set up a situation where a participant would find a dollar on the ground, then see if that person helped somebody in need

In this study, finding the money would be a. a hypothetical construct. b. the dependent variable. c. the operational definition of good mood. d. the validity measurement.

A regression line is

a. a line of covariance. b. a correlation matrix. c. the best fit straight line. d. the equal to a correlation line.