Industry vs. inferiority is the psychological conflict at the heart of every elementary school classroom. Between roughly ages five and twelve, children are not just learning to read and do long division — they are forming beliefs about whether they are capable people. Erikson identified the emotional stakes. But he didn’t explain the mechanism. Vygotsky did. When scaffolding...

Confirmation bias is the tendency to search for, interpret, and remember information in a way that confirms what we already believe — while unconsciously filtering out evidence that contradicts it. It is one of the most well-documented cognitive biases in psychology, and it operates in virtually every domain of human judgment: politics, relationships, medicine, finance, and t...

When a group of like-minded people gets together to discuss an issue, you might expect them to settle somewhere in the middle. Instead, the opposite often happens — their views become more extreme than when they walked in. This is group polarization: the well-documented tendency for group discussion to push members toward a more intense version of their initial position....

Groupthink occurs when a cohesive group’s desire for unanimity overrides critical thinking, leading to disastrous decisions like the Bay of Pigs invasion and Challenger explosion. Yale psychologist Irving Janis introduced groupthink theory Irving Janis in 1972 after analyzing foreign policy failures, identifying how even intelligent groups make irrational choices when conform...