After a light turns green,drivers take about 15 percent less time to travel the first 100 yards when another car is beside them at the intersection than when they are alone.This best illustrates

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This phenomenon is known as social facilitation, which refers to the tendency for the presence of others to enhance performance on simple or well-learned tasks, but impair performance on complex or unlearned tasks. In this case, driving the first 100 yards after a light turns green is a simple and well-learned task, and the presence of another car at the intersection enhances the driver's performance by decreasing the time it takes to travel the first 100 yards.

After a Light Turns Green,drivers Take About 15 Percent Less