Playing sports may help connect aggression and ____

The technique for assuring that subjects in the experimental and control groups are

as similar as possible, even on attributes that the experimenter has not even thought of, is (a) random assignment of subjects to groups (b) random sampling of subjects (c) assigning subjects to groups in turn, so that the first subject who shows up is put in one group, the second into the other, etc. (d) sampling of situations

Transitional models of adult development generally stress which of the following features of development?

a. continuities in how life is experienced b. discontinuities in how life is experienced c. cognitive changes that occur with age d. biological changes that occur with age