After a close-scoring football game in which the local team…

After a close-scoring football game in which the local team wins, a mass of fans runs onto the field and tear down a goal post. When interviewed later, some of the fans said they were motivated to break the rule of “Do Not Enter The Field of Play” because they did not believe they could be identified in the large crowd. Social psychologists describe this phenomenon as:

Dalilah is at her wit’s end. Her 18-month-old son has become…

Dalilah is at her wit’s end. Her 18-month-old son has become a terror. Tuesday, he climbed up on the kitchen counter, opened the canister of sugar, and helped himself to a fistful. Thursday, he put his neighbor’s Barbie doll in the fish tank for a swim. Piaget would say: