Which theory was based on an initial observation that cyclists were able to ride faster when racing others than when racing alone in time trials?

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The theory based on the initial observation that cyclists were able to ride faster when racing others than when racing alone in time trials is social facilitation theory, which suggests that the presence of others can improve performance on simple or well-learned tasks, but may impair performance on complex or less-familiar tasks.

Which Theory Was Based on an Initial Observation That Cyclists