The indole originally found in toad skins, that turns out not to be a very potent hallucinogen, is

C is a measure of:

A. the probability of saying yes to a new word B. discriminability C. the probability of saying yes to an old word D. bias

In one of the first studies in social psychology, Norman Triplett observed in official bike records that bicycle racers pedaled faster when they were pedaling against each other than when they were racing the clock

What Triplett was observing was __________ a) audience effects. b) social loafing. c) co-action effects. d) group polarization.