people compare themselves to others who are better off than they are

people are attracted to those who are similar to them in some way.

the degree to which an individual tends to seek out social contacts

people are attracted to those who possess characteristics that complement their own personal characteristics

Individuals who are high in the need for affiliation express a stronger desire to be with other people, they seem happier when they are with people, and they are more disturbed by unpleasant interactions with others

suggests that people join groups that happen to be close by.

similarity of the members in attitudes, values, demographic characteristics, and so on

people will join groups and remain in groups that provide them with the maximum number of valued rewards while incurring the minimum number of possible costs

distinctive but enduring & dispositional characteristics, including traits, temperament, and values, that characterize an individual’s responses across situations.

groups expand in size as nonmembers become linked to a group member and thus become part of the group itself;

Individuals who have a high need for intimacy, prefer to join with others. Such individuals, however, seek close, warm relations and are more likely to express caring and concern for other people

are sociable, outgoing, and active; they are likely to prefer the company of others, particularly in pleasant and enjoyable situation

tend to be withdrawn, quiet, and reclusive

Five-factor Model

Those who are____ would just as soon avoid groups that are aggressive and competitive, but, like extraverts, they prefer groups that emphasize cooperation

i like you, i like you too typa thing

individuals, in contrast, are more attracted to groups and organizations that are detail- and task-oriented.

individuals select targets who are worse off than they are

Attachment Styles

Individuals who are high in the need for power (or power motive) exhibit an elevated desire to maintain and enhance their capacity to influence other people