Professional athletes perform better before an audience than when alone. this best illustrates

Professional athletes perform better before an audience than when alone. this best illustrates "Social facilitation".

Social facilitation which is also known as the audience effect,  refers to the inclination for individuals to perform distinctively when within the sight of others than when alone. Contrasted with their performance when alone, when within the sight of others, they have a tendency to perform better on straightforward or all around practiced errands and more terrible on mind boggling or new ones.