65 Principles, 11 Categories
Attention, Gestalt, Memory, Sensemaking, Decision Making, Motor/Interaction, Motivation, Cognitive Biases, Persuasion, Emotion, and Ethics. Every principle is grounded in NN/g, Kahneman, Norman, Cialdini, and Miller — 112 research resources stitched into one operational framework.
11 Page-Type Prescriptions
Pre-built psychology checklists for Homepage, Pricing, Dashboard, Onboarding, About, Interactive Tools, E-commerce, SaaS Features, Blog, Checkout, and Settings. Point the skill at a page and it knows what to look for before it even reads the code.
Code-Level Examples
Not abstract theory. Every principle ships with before-and-after code: anchoring on a pricing page, loss aversion in copy, the Zeigarnik Effect on multi-step flows, cognitive load in dashboard layouts. Engineers see the diff, not the lecture.
Ethics-First Anti-Patterns
Eight dark patterns — fake scarcity, confirmshaming, hidden costs, forced continuity, misdirection, fake social proof, dark defaults, roach motel — explicitly documented as bans. The skill won't suggest them. The skill flags them when it sees them.
Built like a developer would build it.
- Conversion Sequence Patterns
Pre-built psychology flows for newsletter signup, free-trial-to-paid, abandoned cart recovery, and more — each mapped to the exact principles that should fire at each step.
- Worked Example Audits
Full reference reviews of a SaaS landing page, an e-commerce checkout, and a subscription conversion flow. Reference material developers can pattern-match against instead of starting from a blank page.
- Hierarchical Decision Framework
Psychology recommendations are weighed against brand identity, accessibility, and technical quality. The skill knows when to defer to your design system, not override it.
- Extensible CSV Databases
Principles and page-type mappings live in machine-readable CSVs. Add custom principles, override defaults, or extend the skill to new page types without touching SKILL.md.
