Answer:
Social facilitation
Step-by-step explanation:
Social facilitation is the phenomenon in which a person performs better in the presence of others that is called social facilitation. Sometimes people perform better in a group than they perform better alone. As it indicates the situation is not so simple.
The result shows that the performance with others increases. But it is not entirely true. Sometimes other presence also worsens our performance. The performance gets improvement in the individual performance when do work with other's help rather than individually.