Primacy effect refers to effect that occurs when information a person first learn affects his/her judgments more than information acquired at a later time; other things being equal, information presented first often has the most influence. Moreover, Primacy effect is defined as the process whereby a person's first impression of another person causes him/her to interpret his/her subsequent behavior in a manner consistent with the first impression. It is the the notion that a person's impressions of other people are heavily influenced by the first information about these people that he/she encounter.