Cialdini's compliance principle of social validation suggests that compliance with a request is more likely when the requested action is seen as being consistent with information we have about what persons similar to us are doing. This principle is closely related to the aspect of conformity.

informational social influence                    

Explanation:

Informational social influence: In social psychology, the term "informational social influence" is described as a phenomenon that occurs when an individual conforms to acquire knowledge, or due to the fact that he or she believes that the other person is correct or right. However, informational social influence represents conformity that lies under the acceptance of a few evidence by a person related to the reality that has been provided to him or her by someone else.

In the question above, the given principle is closely related to the informational social influence aspect of conformity.

answer; their own memory abilities;