A systematic explanation of a phenomenon that organizes known facts, allows the prediction of new facts, and permits a degree of control over the new phenomenon is known as a ______

When groups make riskier or more conservative decisions than individuals, this is known as

a. groupthink b. the foot-in-the-door effect c. the group polarization effect d. the door-in-the-face effect

The sympathetic-adrenal-medullary system causes the secretion of _____, which stimulate(s) the cardiovascular system.

a. cortisol b. epinephrine c. norepinephrine d. lymphocytes e. b and c