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• Superior group performance is based on two variables:
a) Actual task
b) Coordination of the group process

• Actual task:
Group performance is superior to individual performance if the task is:
- Complex (comprises many, interdependent aspects)
- Difficult to be structured
- Multi-level (no solution in one step)

• Coordination of the group process:
- Individual and separate work as the first step
- Exchange and recombination as the second step
o Intervening variables: groupthink; distribution of communication; establishment of sub groups; competition between group members
- Acceptance of interim solutions by group members