This document discusses several concepts related to cognitive development and psychology:
1. It describes Jean Piaget's theory of cognitive development and how a young boy modified his schemas and developed new ones through experiences at his grandfather's village and the zoo.
2. It discusses how first impressions can often be wrong and provides an example of judging a classmate negatively based on initial impressions but later realizing she was actually kind and fun.
3. It explains Fritz Heider's balance theory of feeling comfortable with those who share similar attitudes and an example of struggling to converse with someone of differing views.