Darrin Is a Good Pianist

Multiple Choice

Darrin is a good pianist.However,when he is alone,he becomes lethargic and is not motivated to perform well.At recitals with strangers,Darrin gets very overly aroused and often makes mistakes.His best performance is typically when his family and friends are nearby.In such situations,Darrin isn't nervous and is only moderately aroused.This scenario best exemplifies the principle of _____.

A) Yerkes-Dodson law
B) two-factor theory
C) James-Lange theory
D) self-regulation