subject
Psychology
How the mind actually works — memory, learning, perception, social behavior — written with attention to what the experiments showed and what later research complicated.
7 lessons in psychology
How Cognitive Dissonance Bends Beliefs to Match Behavior
In 1959, Leon Festinger and James Carlsmith asked participants to spend an hour turning wooden pegs a quarter-turn at a time — a task engineered to be excruciatingly dull.
4 min · deepening
How Memory Forms: Encoding, Consolidation, and Retrieval
You meet someone at a party, hear their name, nod, and forget it before the conversation ends.
4 min · foundation
Two Systems Thinking: Kahneman's Account and Its Limits
A chess grandmaster glances at a board mid-game and immediately senses that white is in trouble.
4 min · comparison
What Pavlov Actually Discovered: Classical Conditioning as Prediction
Ivan Pavlov is remembered, in most retellings, for a dog and a bell.
4 min · foundation
What the Bystander Effect Research Actually Shows
The story most people know goes like this: in 1964, a young woman named Kitty Genovese was murdered outside her apartment in Queens while thirty-eight neighbors watched from their windows and did nothing.
4 min · deepening
Why Sleep Reorganizes Memory and Emotion
A medical student crams anatomy until two in the morning, sleeps four hours, and stumbles into the exam convinced she knows less than she did the night before.
4 min · foundation
Why the Replication Crisis Reshaped Psychology
In 2015, a team of nearly three hundred researchers published the results of an unusually ambitious project.
4 min · synthesis