The complete chapter list for Product Theory: The Hidden Forces That Shape User Behavior — 37 short chapters on why users behave the way they do.
Want all of it? 13 of these chapters are published free as essays below — the rest are in the book. If you want the whole argument in order, with the research, the applications, and the limits of each principle, buy Product Theory on Kindle →
Each chapter opens with a story, then the application, the research behind it, and finally the limits — because no principle is universal. Linked chapters are free to read here.
Part 1 — Pricing & Value
- Anchoring: The First Number Wins
- Charm Pricing: The Last Digit
- The Decoy Effect
- Mental Accounting — in the book
- The Utility Paradox
Part 2 — Retention & Inertia
- The Sunk Cost Fallacy
- The Endowment Effect — in the book
- Status Quo Bias — in the book
- The IKEA Effect
- Commitment & Consistency — in the book
- Hedonic Adaptation — in the book
- Reciprocity — in the book
- Attachment Theory for Products — in the book
- Emotional Loss Aversion — in the book
- Hedonic Stockholm Syndrome
Part 3 — Choice & Decision
- The Paradox of Choice — in the book
- Loss Aversion — in the book
- The Mere Exposure Effect — in the book
- Social Proof — in the book
- The Shrinking Set — in the book
- The Laws of Attraction — in the book
Part 4 — Perception & Positioning
- Positioning — in the book
- Jobs To Be Done
- Veblen Goods — in the book
- The Peak-End Rule — in the book
- The Pratfall Effect — in the book
- Broken Windows — in the book
- Affordances — in the book
- The MAYA Principle — in the book
- Lenses — in the book
Part 5 — Metrics & Systems
- Goodhart's Law
- The Cobra Effect
- Survivorship Bias
- The Hawthorne Effect — in the book
- Regression to the Mean — in the book
- Conway's Law
- Metric Theater
Related essays
Get the book
Product Theory collects all 37 chapters in the order they were meant to be read — the mental models that separate products that win from the ones that don't, drawn from psychology, behavioral economics, design, and building products used by millions. Buy it on Kindle →
Its companion, Words, collects the short wisdom stories that show up throughout this blog.