Reappraisal improves well-being and reduces negative emotions

Which force does NOT predict making an earlier transition to intercourse?

A) being an early developer B) having friends who have gone all the way C) being impulsive D) being male

Why is it essential that the experimental and control groups be treated identically in every respect but one?

a) so that the dependent variable can be accurately measured b) so that the results will apply outside the laboratory setting c) so that if the behavior of the two groups differs, the difference can be credited to the one thing that distinguished the groups from one another d) so that if the behavior of the two groups differs, the difference can be attributed to the independent variable