Group Polarization
The tendency for a group to make decisions that are more extreme than the initial inclination of its members.
Groupthink
A phenomenon where group members prioritize harmony and conformity over critical evaluation of information or alternative viewpoints.
Prejudice
Unjustified or incorrect attitude (usually negative) towards an individual based solely on the individual's membership of a social group.
Stereotype
A widely held but oversimplified and generalized belief or idea about a particular group of people.
Discrimination
Unjust or prejudicial treatment of different categories of people, especially on the grounds of race, age, or sex.
Just-world Phenomenon
The belief that the world is just and people get what they deserve.
Ingroup
A social group to which a person psychologically identifies as being a member.
Outgroup
A social group with which an individual does not identify.
In-group Bias
The tendency to favor one's own group or its members over an outgroup or outsiders.
Scapegoat Theory
The tendency to blame someone else for one's own problems, a process that often results from prejudice and discrimination.
Other-race Effect
The tendency to recognize faces of one's own race more easily than faces of other races.
Mere Exposure Effect
The phenomenon that people tend to develop a preference for things merely because they are familiar with them.
Passionate Love
A state of intense longing for union with another, characterized by physiological arousal.
Companionate Love
The deep affectionate attachment we feel for those with whom our lives are intertwined.
Equity
A condition in which people receive from a relationship in proportion to what they give to it.