In Diti's study, employees who listened to rap music produced an average of 5.71 units and employees who listened to polka music produced an average of 2.71 units. To see if the difference between these means is statistically significant, Diti should ____

An anxiety disorder that involves a fear of interacting with others or being in a social situation is called ______

a) agoraphobia b) social anxiety disorder c) a specific phobia d) generalized anxiety disorder

Joan begs her father for a frosted cookie at the bakery but he refuses to buy her one. Joan continues to whine and complain until finally he breaks down and gets her the cookie. For Joan, the cookie is a ________

a. positive punisher b. positive reinforcer c. negative reinforcer d. negative punisher