Mark just received notice that he was accepted to law school. Excited, as he walks outside his house to tell his roommate, who is working in the front yard. As he exits his house, he runs into the postal worker who always delivers the mail to his house. He has never liked the postal worker much, but now he is happy to see him and eagerly strikes up a conversation. Mark's evaluation of the postal worker is due to the ________________ effect of receiving the news about law school.