This document discusses attitudes and where they come from. It defines an attitude as a positive, negative, or mixed reaction or feeling toward a person, object, or idea. Attitudes have three components - cognitive, affective, and behavioral. They can be influenced by genes, as shown in twin studies, and formed through social experiences based on affect and behavior. Attitudes are shaped by values, mere exposure, and classical conditioning. People may develop attitudes to express identity, protect self-esteem, obtain rewards or avoid punishment, and understand people and events.