This document defines and discusses key concepts related to attitudes, stereotypes, prejudice, discrimination, and attribution. It outlines several factors that influence attitude formation and change. Stereotypes are defined as beliefs about traits prevalent in social groups. Prejudice involves unfavorable thoughts and feelings toward group members. Discrimination refers to differential treatment. Several types of prejudice and methods for reducing prejudice and discrimination are described. Attribution involves making causal inferences about behaviors and can involve biases like the fundamental attribution error.