Social fascilitation can best account for his unsuccessful night.
A sociological phenomena known as "social facilitation" describes how performing solo tasks while around others enhances performance. In other words, people perform jobs better while working with others than when working alone.
According to Norman Triplett's social facilitation hypothesis, people will behave differently when there are observers present. Particularly, people often do better on simple or well-known jobs and worse on novel or complex tasks.
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