1. Social Facilitation
The improved performance of tasks in the presence of others
When is social facilitation most noticeable?
When the tasks are simple or well learned, mastered tasks
When does social facilitation not happen?
When tasks are difficult and not yet mastered
How does social facilitation explain home field advantage in sports?

2. Social Loafing
The tendency for people in a group to exert less effort when pooling their efforts towards attaining a common goal than when individually accountable.

3. The loss of self awareness and self restraint occurring in group situations that foster arousal and anonymity.
When is deindividuation most likely to occur?
Mob Mentality

4.
the mode of thinking that occurs when the desire for harmony in a decision making group overrides a realistic appraisal of alternatives.
Groupthink is a mode of thinking that occurs when the desire for unanimity in a decision-making group overrides a realistic appraisal of alternative courses of action. This mode of thinking can result in bad group decisions when, rather than defend their own ideas, individual group members simply go along with the group.
Conditions that increase the likelihood of groupthink include the following:
1. The group is highly cohesive.
2. There is a distinct and directive leader.
3. The group is isolated from other influences.
4. There is time pressure or intense stress.
5. The leader already has his or her mind made up.
Examples
(a) Challenger explosion—Although there were signs that the spaceship was not functioning properly, no member of NASA stood up to prevent the launching of the spaceship.

5. How do you resist group think?
Assign people to identify problems
Be open to and welcome various opinions
Invite experts to critique plans in various stages of development

6. In what situation is group polarization most likely to happen?
Group Polarization- A phenomenon wherein the decisions and opinions of people in a group setting become more extreme than their actual, privately held beliefs.
In what situation is group polarization most likely to happen?

7. Group Polarization Happens because of social validation
Strengthening your views because other people agree with you since you use other people’s behavior as a standard for your own.