Twenge and his colleagues (2004, 2015) report that in the last forty years, college students are believing more and more that they ________ over the good and bad things in life

On a fixed-interval schedule, a reinforcer is delivered for the first response made after a fixed period of time

a. true b. false

Successful performance on a moderately challenging task requires _____, according to the Yerkes-Dodson law

a) no arousal b) low arousal c) moderate arousal d) high arousal