Zach has difficulty understanding whether a friends pouting facial expression signals sadness or affection. Zachs difficulty would be especially common for those with.

On a variable-interval schedule, reinforcement is given _______

a. for the first correct response after a specific amount of time has passed b. for correct responses after randomly varying amounts of time have passed c. after a specific number of responses are given d. after a randomly varying number of responses are given

One way for the social connection of a community to increase is to

a. experience a natural disaster. b. become wealthier. c. increase its ratio of men to women. d. provide financial incentives to those who connect to others.