There are several reasons why group problem-solving and decision making is more likely to produce the correct answer than in an individual setting.
One reason is that groups who act in a cooperative manner tend to do better than individuals, who are in a more competitive atmosphere. Group interaction facilitates collaboration, fresh ideas, and improved solutions.
Another reason why groups tend to do better is that a group has a better collective memory than one person does.
Lastly, a group working together can draw upon each other's strengths and talents, making the group more well-rounded and resource rich.
