Triplett Conducted One of Social Psychology's First Laboratory Experiments by Asking

Triplett conducted one of social psychology's first laboratory experiments by asking children to wind string on a fishing reel.The results of the study indicated that there was a positive relationship between the speed at which the children wound the reel and the presence of other children.This effect of others' presence is known as

A) the groupthink effect.
B) social facilitation.
C) social loafing.
D) deindividuation.