Final answer:
The affective dimension is the part of the social perception model that includes one's attitudes and mood, dealing with the emotional response towards a person, idea, or object.
Step-by-step explanation:
The portion of the social perception model that includes one's attitudes and mood is the Affective dimension. According to Rosenberg and Hovland (1960), attitudes have three components: cognitive, affective, and behavioral. The cognitive component refers to belief and knowledge, the affective component deals with feelings, and the behavioral component describes the effect of the attitude on behavior.
The affective component of attitudes is essential as it encompasses our emotional responses and the moods we experience towards a person, idea, or object, whether positive or negative. Our mood and emotions play a significant role in shaping our overall attitudes and consequently influence our behavior and perceptions.