Marketing Psychology
Apply behavioral science and mental models to every marketing decision — from pricing to copy to onboarding flows.
What This Skill Does
The Challenge: Marketing intuition leads to inconsistent results. Copy that “feels persuasive” may miss the cognitive mechanisms that actually drive decisions. Without behavioral science grounding, teams apply psychological triggers randomly.
The Solution: Marketing Psychology skill provides a structured library of 70+ mental models and behavioral science principles with direct applications to SaaS and software marketing. Maps each principle to specific use cases: pricing pages, CTAs, onboarding, social proof, and urgency.
Activation
Implicit: Activates when user requests persuasion techniques, copy optimization, behavioral triggers, or pricing psychology.
Explicit: Activate via prompt:
Activate marketing-psychology skill to apply [principle/topic] to [marketing element]Capabilities
1. Core Principle Library
70+ principles organized by decision-making mechanism.
Principle categories:
| Category | Count | Key Principles |
|---|---|---|
| Social Proof | 8 | Wisdom of crowds, authority bias, social validation |
| Scarcity & Urgency | 7 | Loss aversion, FOMO, scarcity heuristic |
| Anchoring & Pricing | 9 | Price anchoring, decoy effect, charm pricing |
| Trust & Credibility | 10 | Halo effect, mere exposure, authority |
| Commitment | 8 | Foot-in-the-door, consistency, sunk cost |
| Cognitive Ease | 12 | Processing fluency, chunking, recognition |
| Framing | 8 | Loss framing, gain framing, reference points |
| Reciprocity | 6 | Gift, concession, value-first |
Full library: references/marketing-psychology-70.md
2. Pricing Psychology Patterns
Apply behavioral economics to pricing pages.
Key pricing principles:
Price anchoring: Show highest tier first. Subsequent prices feel more reasonable.
Enterprise $299/mo → Pro $99/mo → Starter $29/mo
(Left to right = perceived value descent)Decoy effect: Add a third option that makes your preferred option look best.
Basic $19 → Pro $49 → Elite $45 (Pro "wins" — better value than both)Charm pricing: $99 feels meaningfully cheaper than $100. Use $X9 pricing for consumer tiers.
3. Copy Principles
Apply psychology to headlines, CTAs, and product descriptions.
Loss aversion (2x more powerful than equivalent gain):
- Instead of: “Save time with automation”
- Use: “Stop losing 3 hours/week to manual work”
Social proof hierarchy (most to least effective):
- Expert testimonial with credentials
- Customer logo + revenue stat
- User count (“12,000+ marketers”)
- Star rating with review count
- Press mentions
Specificity principle: Precise numbers are 38% more credible than round numbers.
4. Onboarding Psychology
Behavioral patterns for activation and retention.
Key mechanisms:
- Progress effect: Show completion % to trigger desire to complete
- Endowment effect: Let users customize before activation — they value it more
- Variable reward: Surprise “wins” during onboarding increase engagement
- Social baseline: “Most users complete setup in under 10 minutes” sets expectation
Prerequisites
- Clear understanding of target ICP (to apply relevant principles)
- Marketing asset to optimize (copy, pricing page, onboarding)
Best Practices
1. Apply one principle at a time Multiple principles create noise. Pick the one most relevant to the decision moment.
2. Verify with data Behavioral principles are tendencies, not laws. A/B test before assuming universal application.
3. Ethics boundary Use principles to help users make decisions that are genuinely good for them. Dark patterns erode trust and LTV.
Common Use Cases
Use Case 1: Pricing Page Optimization
Scenario: 3-tier pricing page has most users choosing the cheapest plan.
Principles to apply:
- Anchor with highest tier first (move Enterprise left)
- Add decoy plan to make Pro look best value
- Highlight “Most Popular” badge on Pro tier
- Use “per user/month” instead of “per month” to reduce perceived cost
- Add loss-framed copy: “What you miss without Pro…”
Use Case 2: Trial Conversion Email
Scenario: Day-7 email to trial users who haven’t set up a key feature.
Principles to apply:
- Loss aversion: “Your trial has 7 days left” (not “7 days to try”)
- Progress effect: “You’ve completed 60% of setup”
- Social proof: “Teams who complete setup convert at 4x rate”
- Commitment: Reference actions they’ve already taken in the product
Troubleshooting
Issue: Applied urgency but it feels manipulative Solution: Urgency works when it’s real (actual deadline, actual limit). Fake scarcity destroys trust. Use only real constraints.
Issue: Social proof not increasing conversions Solution: Match social proof type to buyer stage. Early-stage: use case relevance. Late-stage: ROI proof and authority.
Related Skills
- Copywriting - Apply psychology in copy formulas
- Form CRO - Form conversion psychology
- A/B Test Setup - Test psychological interventions
- Marketing Ideas - Psychology-informed campaign ideas
Related Commands
/content/cro- CRO-optimized copy using psychology/ckm:analyze- Analyze conversion data