When Jacob met his supervisor for the first time, he remembered to smile as he answered her questions. On seeing his smile, his supervisor thought Jacob is a friendly person. In terms of social perception, Jacob's impression is an example of

Answer: Primacy effect

Explanation:

Primary effect is defined as the tendency in which the moments or information or things at the beginning and end of something such as list can be easily recalled as compared with the memories that occurred in between the list.

According to the question, Jacob's impression can be indicated as primary effect. His smile along with answering the interview question was recalled easily through supervisor which made him think he is friendly person.

Supervisor remembers Jacob's first impression and does not gives any detail about his later behavior.