People who cried in a sad situation feel less depressed afterward than those who didn't

If you take the covariance between variables X and Y and divide it by both the standard deviation of X and the standard deviation of Y, the resulting value is the value of Pearson r.

a. true b. false

A teacher sends a student out of the classroom because she is disturbing the other children. She tells the student she will be allowed to come back to the classroom in fifteen minutes and that she expects her to be quiet when she returns

When the student comes back, she is even more disruptive. What can you conclude from this example? a. The teacher has used punishment as a way to control the student's behavior. b. The student's behavior is an example of positive punishment. c. The student's behavior is an example of negative punishment. d. The teacher thought she was using punishment, but the student was actually being reinforced.