Behavior with the purpose of harming another

Occurs when another person's behavior provides information about what is good or right

The process by which we draw inferences about others based on knowledge of the categories to which they belong.

Two or more people acting together to gain mutual benefits

The tendency to do what others do simply because others are doing it

The process by which people come to understand others.

The phenomenom that being in a group reduces ones awareness of his own values

Ask for something big (refuse) then ask for what you really want (with the hopes they will accept)

The process of creating a modification to a stereotype, rather than abandoning it altogether, when confronted with evidence that clearly disconfirms that stereotype

The tendency for a group's initial leaning to get stronger over time

One person's behavior is influenced by another person's behavior because the latter provides information about what is appropriate

Inferences about the causes of people's behavior

Behavior that benefits others with the expectation that the benefits will be returned in the future

The process by which a attitudes or beliefs are changed by appeals to reason

The tendency for observers to perceive what they expect to perceive