| Term | Definition |
| mere exposure effect | an effect that states that the more one is exposed to something, the more one will come to like it |
| cognitive dissonance theory | the idea that peole are motivated to have consistent attitudes and behaviors |
| food-in-the-door | asking from small favors to bigger favors |
| door-in-the-face | asking from big favors to smaller favors |
| norms of reciprocity | people's tendency to think that when someone does something nice for them, they ought to do something nice in return |
| consistency | how similarly the individual acts in the same situation over time |
| distinctiveness | how similar this situation is to other situations in which we have watched |
| consensus | how others in the same situation have responded |
| fundamental attribution error | the tendency to underestimate the role of situational factors |
| false-consensus effect | the tendency for people to overestimate the number of people who agree with them |
| self-serving bias | the tendency to take more credit for good outcomes than for bad ones |
| out-group homogeneity | tendency for people to see members of their own group as more diverse than members of other groups |
| instrumental aggression | this is when the aggressive act is intended to secure a particular end |
| hostile aggression | this is when the aggressive act has no clear purpose |
| social facilitation | the phenomenon that the presence of others improves task performance |
| social impairment | the phenomenon that being watched by others actually hur performance if it is a difficult one |
| social loafing | the phenomenon when individuals do not put in as much effort when acting as part of a group as they do when acting alone |
| group polarization | the tendency of a group to make more extreme decisions than the group members would make individually |
| groupthink | the tendency for some groups to make bad decisions |