# Marketing Psychology — Marketing Skill for AI Agents

Marketing psychology applies mental models and behavioral science to influence buying decisions ethically. The models group into foundational thinking tools (first principles, Jobs to Be Done, theory of constraints), buyer-behavior biases (loss aversion, social proof, endowment effect, sunk cost), persuasion levers (reciprocity, authority, scarcity, anchoring, the decoy effect), pricing psychology (charm pricing, the Rule of 100, good-better-best), and design models (Hick's Law, the BJ Fogg behavior model, goal-gradient). The right model depends on the challenge: low conversions point to friction and activation-energy models; price objections to anchoring and framing; churn to switching costs and status-quo bias. Ethical use means real constraints and honest framing, never fake countdown timers or manufactured urgency.

> Maintained by Corey Haines · v2.0.0 · Updated 2026-05-13

Install: `npx skills add coreyhaines31/marketingskills`
Source: https://github.com/coreyhaines31/marketingskills/tree/main/skills/marketing-psychology

## What's inside

**The playbook covers:** How to Use This Skill, Foundational Thinking Models, Understanding Buyers & Human Psychology, Influencing Behavior & Persuasion, Pricing Psychology, Design & Delivery Models, Growth & Scaling Models, Quick Reference, Task-Specific Questions

## Example

**Prompt:** How can I use psychology to increase conversions on our pricing page? We sell a B2B SaaS tool with three tiers ($29, $79, $199/month).

**Match the model to the challenge**

Low conversions → Hick's Law, Activation Energy, BJ Fogg (Motivation × Ability × Prompt)
Price objections → Anchoring, Framing, Mental Accounting, Loss Aversion
Building trust → Authority, Social Proof, Reciprocity, Pratfall Effect
Increasing urgency → Scarcity, Loss Aversion, Zeigarnik Effect
Retention / churn → Endowment Effect, Switching Costs, Status-Quo Bias
Decision paralysis → Paradox of Choice, Default Effect, Nudge Theory
Onboarding → Goal-Gradient, IKEA Effect, Commitment & Consistency

## FAQ

### How do you use scarcity in marketing without being manipulative?

Use scarcity only when the constraint is real — limited beta spots, a genuine early-bird deadline, a capped cohort, capacity-limited service slots. That's ethical scarcity: it reflects an actual limit. Manufactured urgency — fake countdown timers, permanent "only 3 left" claims — creates a short-term lift but collapses trust when buyers catch on. The rule across every persuasion lever in this skill: influence with real constraints and honest framing, not fabricated ones.

### Which psychological principles improve pricing pages?

Anchoring (show the highest tier or a decoy first so lower prices feel reasonable), charm pricing vs. rounded-price fluency ($497 signals value, $500 signals premium), the Rule of 100 (percentage discounts feel bigger under $100, dollar amounts feel bigger over it), good-better-best framing so the middle tier looks like the safe choice, loss aversion to show what lower tiers give up, and social proof placed near the pricing.

### Why do free trials work better than freemium for some products?

Several biases stack in a trial: the zero-price effect removes the psychological barrier to starting, the endowment effect makes users feel ownership once they're inside, sunk-cost and loss aversion make them reluctant to give up the time invested and the access they'd lose, and status-quo bias favors keeping what they have. Trials tend to win for products with high activation effort; freemium tends to win where network effects need scale.

## Related skills

- **cro** — Apply psychology to page optimization
- **copywriting** — Write copy using psychological principles
- **popups** — Use triggers and psychology in popups
- **ab-testing** — Test psychological hypotheses

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Canonical: https://marketing-skills.com/skills/marketing-psychology