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| Two or more peoplewho interact and are interdependent in the sense that their needs and goals cause them to influence each other. |
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| shared expectation in a group about how particular people are to behave. |
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| Qualities of a group that bind members together and promote liking between members. |
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The tendency for people to do better on simple tasks and worse on complex tasks when they are in the presence of others and their individual performance can be evaluated. |
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| The tendency for people to do worse on simple tasks but better on complex tasks when they are in the presence of others and their individual performance cannot be evaulated. |
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| The loosing of normal constraints on behavior when people are in a crowd, leading to an increase in impulsive and deviant acts. |
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Any aspect of group interaction that inhibits good problem solving |
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| The combined memory of two people that is more efficient than the memory of either individual. |
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| A kind of thinking in which maintaining group cohesiveness and solidarity is more important than considering the facts in a realistic manner. |
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| The tendency for groups to make decisions that are more extreme than the initial inclinations of its members. |
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| The idea that certain key personality traits make a person a good leader, regardless of the situation. |
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| Contingency Theory of Leadership |
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| The idea that leadership effectiveness depends both on how task-oriented or relationship-oriented the leader is and on the amount of control and influence the leader has over the group. |
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| A leader who is concerned more with getting the job done than with workers feelings and relationships. |
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| Relationship-Oriented Leader |
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| A leader who is concerned primarily with workers' feelings and relationships. |
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| A conflict in which the most beneficial action for an individual will, if chosen by most people, have harmful effects on everyone. |
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| A means of encouraging coorperation by at first acting cooperatively but then always responding the way your opponent did (cooperatively or competitively) on the previous trial. |
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| A social dilemma in which individuals must contribute to a common pool in order to maintain the public good. |
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| A social dilemma in which everyone takes from a common pool of goods that will replenish itself if used in moderation but will disappear if overused. |
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| A form of communication between opposing sides in a conflict in which offers and counteroffers are made and a solution occurs only when both parties agree. |
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| A solution to a conflict whereby the parties make trade-offs on issues according to their different interests; each side concedes the most on issues that are unimportant to it but important to the other side. |
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