You see a person lying in the street in apparent discomfort. Unsure of whether he needs help, you observe that while other people notice him, no one else stops to offer help. Because no one else stops, you conclude that he must not need help but is probably only drunk.
Your decision most likely shows the effects of:

A. normative social influence.
B. informational social influence.
C. compliance.
D. the boomerang effect.

A

Explanation:

The above scenario fits in with the Normative Social Influence. It is a behavioural change seen as necessary just to conform to a specific group (in this scenario, the group consists of the people gathered). Exhibiting this influence causes people to publicly comply to a behaviour that would be unacceptable in private.

Answer

B

This is a psychological and indecisive social state of action in which there is a need to copy the actions or behavior of others in order to make a piratical judgment of an  action to take concerning a  current situation.

It is essential in a social situation where the appropriate mode of behavior to undertake to suit a current social situation is not known. Therefore imitating the actions of surrounding people,(which may be correct or accurate) is assumed the best piratical judgment to dictates the  state of action.

Thus an individual mode of behaviour  is influenced by private acceptance  which  facilitated public compliance  to the current social situation.