1---
2name: marketing-psychology
3description: "When the user wants to apply psychological principles, mental models, or behavioral science to marketing. Also use when the user mentions 'psychology,' 'mental models,' 'cognitive bias,' 'persuasion,' 'behavioral science,' 'why people buy,' 'decision-making,' 'consumer behavior,' 'anchoring,' 'social proof,' 'scarcity,' 'loss aversion,' 'framing,' or 'nudge.' Use this whenever someone wants to understand or leverage how people think and make decisions in a marketing context."
4metadata:
5  version: 1.1.0
6---
7 
8# Marketing Psychology & Mental Models
9 
10You are an expert in applying psychological principles and mental models to marketing. Your goal is to help users understand why people buy, how to influence behavior ethically, and how to make better marketing decisions.
11 
12## How to Use This Skill
13 
14**Check for product marketing context first:**
15If `.agents/product-marketing-context.md` exists (or `.claude/product-marketing-context.md` in older setups), read it before applying mental models. Use that context to tailor recommendations to the specific product and audience.
16 
17Mental models are thinking tools that help you make better decisions, understand customer behavior, and create more effective marketing. When helping users:
18 
191. Identify which mental models apply to their situation
202. Explain the psychology behind the model
213. Provide specific marketing applications
224. Suggest how to implement ethically
23 
24---
25 
26## Foundational Thinking Models
27 
28These models sharpen your strategy and help you solve the right problems.
29 
30### First Principles
31Break problems down to basic truths and build solutions from there. Instead of copying competitors, ask "why" repeatedly to find root causes. Use the 5 Whys technique to tunnel down to what really matters.
32 
33**Marketing application**: Don't assume you need content marketing because competitors do. Ask why you need it, what problem it solves, and whether there's a better solution.
34 
35### Jobs to Be Done
36People don't buy products—they "hire" them to get a job done. Focus on the outcome customers want, not features.
37 
38**Marketing application**: A drill buyer doesn't want a drill—they want a hole. Frame your product around the job it accomplishes, not its specifications.
39 
40### Circle of Competence
41Know what you're good at and stay within it. Venture outside only with proper learning or expert help.
42 
43**Marketing application**: Don't chase every channel. Double down where you have genuine expertise and competitive advantage.
44 
45### Inversion
46Instead of asking "How do I succeed?", ask "What would guarantee failure?" Then avoid those things.
47 
48**Marketing application**: List everything that would make your campaign fail—confusing messaging, wrong audience, slow landing page—then systematically prevent each.
49 
50### Occam's Razor
51The simplest explanation is usually correct. Avoid overcomplicating strategies or attributing results to complex causes when simple ones suffice.
52 
53**Marketing application**: If conversions dropped, check the obvious first (broken form, page speed) before assuming complex attribution issues.
54 
55### Pareto Principle (80/20 Rule)
56Roughly 80% of results come from 20% of efforts. Identify and focus on the vital few.
57 
58**Marketing application**: Find the 20% of channels, customers, or content driving 80% of results. Cut or reduce the rest.
59 
60### Local vs. Global Optima
61A local optimum is the best solution nearby, but a global optimum is the best overall. Don't get stuck optimizing the wrong thing.
62 
63**Marketing application**: Optimizing email subject lines (local) won't help if email isn't the right channel (global). Zoom out before zooming in.
64 
65### Theory of Constraints
66Every system has one bottleneck limiting throughput. Find and fix that constraint before optimizing elsewhere.
67 
68**Marketing application**: If your funnel converts well but traffic is low, more conversion optimization won't help. Fix the traffic bottleneck first.
69 
70### Opportunity Cost
71Every choice has a cost—what you give up by not choosing alternatives. Consider what you're saying no to.
72 
73**Marketing application**: Time spent on a low-ROI channel is time not spent on high-ROI activities. Always compare against alternatives.
74 
75### Law of Diminishing Returns
76After a point, additional investment yields progressively smaller gains.
77 
78**Marketing application**: The 10th blog post won't have the same impact as the first. Know when to diversify rather than double down.
79 
80### Second-Order Thinking
81Consider not just immediate effects, but the effects of those effects.
82 
83**Marketing application**: A flash sale boosts revenue (first order) but may train customers to wait for discounts (second order).
84 
85### Map ≠ Territory
86Models and data represent reality but aren't reality itself. Don't confuse your analytics dashboard with actual customer experience.
87 
88**Marketing application**: Your customer persona is a useful model, but real customers are more complex. Stay in touch with actual users.
89 
90### Probabilistic Thinking
91Think in probabilities, not certainties. Estimate likelihoods and plan for multiple outcomes.
92 
93**Marketing application**: Don't bet everything on one campaign. Spread risk and plan for scenarios where your primary strategy underperforms.
94 
95### Barbell Strategy
96Combine extreme safety with small high-risk/high-reward bets. Avoid the mediocre middle.
97 
98**Marketing application**: Put 80% of budget into proven channels, 20% into experimental bets. Avoid moderate-risk, moderate-reward middle.
99 
100---
101 
102## Understanding Buyers & Human Psychology
103 
104These models explain how customers think, decide, and behave.
105 
106### Fundamental Attribution Error
107People attribute others' behavior to character, not circumstances. "They didn't buy because they're not serious" vs. "The checkout was confusing."
108 
109**Marketing application**: When customers don't convert, examine your process before blaming them. The problem is usually situational, not personal.
110 
111### Mere Exposure Effect
112People prefer things they've seen before. Familiarity breeds liking.
113 
114**Marketing application**: Consistent brand presence builds preference over time. Repetition across channels creates comfort and trust.
115 
116### Availability Heuristic
117People judge likelihood by how easily examples come to mind. Recent or vivid events seem more common.
118 
119**Marketing application**: Case studies and testimonials make success feel more achievable. Make positive outcomes easy to imagine.
120 
121### Confirmation Bias
122People seek information confirming existing beliefs and ignore contradictory evidence.
123 
124**Marketing application**: Understand what your audience already believes and align messaging accordingly. Fighting beliefs head-on rarely works.
125 
126### The Lindy Effect
127The longer something has survived, the longer it's likely to continue. Old ideas often outlast new ones.
128 
129**Marketing application**: Proven marketing principles (clear value props, social proof) outlast trendy tactics. Don't abandon fundamentals for fads.
130 
131### Mimetic Desire
132People want things because others want them. Desire is socially contagious.
133 
134**Marketing application**: Show that desirable people want your product. Waitlists, exclusivity, and social proof trigger mimetic desire.
135 
136### Sunk Cost Fallacy
137People continue investing in something because of past investment, even when it's no longer rational.
138 
139**Marketing application**: Know when to kill underperforming campaigns. Past spend shouldn't justify future spend if results aren't there.
140 
141### Endowment Effect
142People value things more once they own them.
143 
144**Marketing application**: Free trials, samples, and freemium models let customers "own" the product, making them reluctant to give it up.
145 
146### IKEA Effect
147People value things more when they've put effort into creating them.
148 
149**Marketing application**: Let customers customize, configure, or build something. Their investment increases perceived value and commitment.
150 
151### Zero-Price Effect
152Free isn't just a low price—it's psychologically different. "Free" triggers irrational preference.
153 
154**Marketing application**: Free tiers, free trials, and free shipping have disproportionate appeal. The jump from $1 to $0 is bigger than $2 to $1.
155 
156### Hyperbolic Discounting / Present Bias
157People strongly prefer immediate rewards over future ones, even when waiting is more rational.
158 
159**Marketing application**: Emphasize immediate benefits ("Start saving time today") over future ones ("You'll see ROI in 6 months").
160 
161### Status-Quo Bias
162People prefer the current state of affairs. Change requires effort and feels risky.
163 
164**Marketing application**: Reduce friction to switch. Make the transition feel safe and easy. "Import your data in one click."
165 
166### Default Effect
167People tend to accept pre-selected options. Defaults are powerful.
168 
169**Marketing application**: Pre-select the plan you want customers to choose. Opt-out beats opt-in for subscriptions (ethically applied).
170 
171### Paradox of Choice
172Too many options overwhelm and paralyze. Fewer choices often lead to more decisions.
173 
174**Marketing application**: Limit options. Three pricing tiers beat seven. Recommend a single "best for most" option.
175 
176### Goal-Gradient Effect
177People accelerate effort as they approach a goal. Progress visualization motivates action.
178 
179**Marketing application**: Show progress bars, completion percentages, and "almost there" messaging to drive completion.
180 
181### Peak-End Rule
182People judge experiences by the peak (best or worst moment) and the end, not the average.
183 
184**Marketing application**: Design memorable peaks (surprise upgrades, delightful moments) and strong endings (thank you pages, follow-up emails).
185 
186### Zeigarnik Effect
187Unfinished tasks occupy the mind more than completed ones. Open loops create tension.
188 
189**Marketing application**: "You're 80% done" creates pull to finish. Incomplete profiles, abandoned carts, and cliffhangers leverage this.
190 
191### Pratfall Effect
192Competent people become more likable when they show a small flaw. Perfection is less relatable.
193 
194**Marketing application**: Admitting a weakness ("We're not the cheapest, but...") can increase trust and differentiation.
195 
196### Curse of Knowledge
197Once you know something, you can't imagine not knowing it. Experts struggle to explain simply.
198 
199**Marketing application**: Your product seems obvious to you but confusing to newcomers. Test copy with people unfamiliar with your space.
200 
201### Mental Accounting
202People treat money differently based on its source or intended use, even though money is fungible.
203 
204**Marketing application**: Frame costs in favorable mental accounts. "$3/day" feels different than "$90/month" even though it's the same.
205 
206### Regret Aversion
207People avoid actions that might cause regret, even if the expected outcome is positive.
208 
209**Marketing application**: Address regret directly. Money-back guarantees, free trials, and "no commitment" messaging reduce regret fear.
210 
211### Bandwagon Effect / Social Proof
212People follow what others are doing. Popularity signals quality and safety.
213 
214**Marketing application**: Show customer counts, testimonials, logos, reviews, and "trending" indicators. Numbers create confidence.
215 
216---
217 
218## Influencing Behavior & Persuasion
219 
220These models help you ethically influence customer decisions.
221 
222### Reciprocity Principle
223People feel obligated to return favors. Give first, and people want to give back.
224 
225**Marketing application**: Free content, free tools, and generous free tiers create reciprocal obligation. Give value before asking for anything.
226 
227### Commitment & Consistency
228Once people commit to something, they want to stay consistent with that commitment.
229 
230**Marketing application**: Get small commitments first (email signup, free trial). People who've taken one step are more likely to take the next.
231 
232### Authority Bias
233People defer to experts and authority figures. Credentials and expertise create trust.
234 
235**Marketing application**: Feature expert endorsements, certifications, "featured in" logos, and thought leadership content.
236 
237### Liking / Similarity Bias
238People say yes to those they like and those similar to themselves.
239 
240**Marketing application**: Use relatable spokespeople, founder stories, and community language. "Built by marketers for marketers" signals similarity.
241 
242### Unity Principle
243Shared identity drives influence. "One of us" is powerful.
244 
245**Marketing application**: Position your brand as part of the customer's tribe. Use insider language and shared values.
246 
247### Scarcity / Urgency Heuristic
248Limited availability increases perceived value. Scarcity signals desirability.
249 
250**Marketing application**: Limited-time offers, low-stock warnings, and exclusive access create urgency. Only use when genuine.
251 
252### Foot-in-the-Door Technique
253Start with a small request, then escalate. Compliance with small requests leads to compliance with larger ones.
254 
255**Marketing application**: Free trial → paid plan → annual plan → enterprise. Each step builds on the last.
256 
257### Door-in-the-Face Technique
258Start with an unreasonably large request, then retreat to what you actually want. The contrast makes the second request seem reasonable.
259 
260**Marketing application**: Show enterprise pricing first, then reveal the affordable starter plan. The contrast makes it feel like a deal.
261 
262### Loss Aversion / Prospect Theory
263Losses feel roughly twice as painful as equivalent gains feel good. People will work harder to avoid losing than to gain.
264 
265**Marketing application**: Frame in terms of what they'll lose by not acting. "Don't miss out" beats "You could gain."
266 
267### Anchoring Effect
268The first number people see heavily influences subsequent judgments.
269 
270**Marketing application**: Show the higher price first (original price, competitor price, enterprise tier) to anchor expectations.
271 
272### Decoy Effect
273Adding a third, inferior option makes one of the original two look better.
274 
275**Marketing application**: A "decoy" pricing tier that's clearly worse value makes your preferred tier look like the obvious choice.
276 
277### Framing Effect
278How something is presented changes how it's perceived. Same facts, different frames.
279 
280**Marketing application**: "90% success rate" vs. "10% failure rate" are identical but feel different. Frame positively.
281 
282### Contrast Effect
283Things seem different depending on what they're compared to.
284 
285**Marketing application**: Show the "before" state clearly. The contrast with your "after" makes improvements vivid.
286 
287---
288 
289## Pricing Psychology
290 
291These models specifically address how people perceive and respond to prices.
292 
293### Charm Pricing / Left-Digit Effect
294Prices ending in 9 seem significantly lower than the next round number. $99 feels much cheaper than $100.
295 
296**Marketing application**: Use .99 or .95 endings for value-focused products. The left digit dominates perception.
297 
298### Rounded-Price (Fluency) Effect
299Round numbers feel premium and are easier to process. $100 signals quality; $99 signals value.
300 
301**Marketing application**: Use round prices for premium products ($500/month), charm prices for value products ($497/month).
302 
303### Rule of 100
304For prices under $100, percentage discounts seem larger ("20% off"). For prices over $100, absolute discounts seem larger ("$50 off").
305 
306**Marketing application**: $80 product: "20% off" beats "$16 off." $500 product: "$100 off" beats "20% off."
307 
308### Price Relativity / Good-Better-Best
309People judge prices relative to options presented. A middle tier seems reasonable between cheap and expensive.
310 
311**Marketing application**: Three tiers where the middle is your target. The expensive tier makes it look reasonable; the cheap tier provides an anchor.
312 
313### Mental Accounting (Pricing)
314Framing the same price differently changes perception.
315 
316**Marketing application**: "$1/day" feels cheaper than "$30/month." "Less than your morning coffee" reframes the expense.
317 
318---
319 
320## Design & Delivery Models
321 
322These models help you design effective marketing systems.
323 
324### Hick's Law
325Decision time increases with the number and complexity of choices. More options = slower decisions = more abandonment.
326 
327**Marketing application**: Simplify choices. One clear CTA beats three. Fewer form fields beat more.
328 
329### AIDA Funnel
330Attention → Interest → Desire → Action. The classic customer journey model.
331 
332**Marketing application**: Structure pages and campaigns to move through each stage. Capture attention before building desire.
333 
334### Rule of 7
335Prospects need roughly 7 touchpoints before converting. One ad rarely converts; sustained presence does.
336 
337**Marketing application**: Build multi-touch campaigns across channels. Retargeting, email sequences, and consistent presence compound.
338 
339### Nudge Theory / Choice Architecture
340Small changes in how choices are presented significantly influence decisions.
341 
342**Marketing application**: Default selections, strategic ordering, and friction reduction guide behavior without restricting choice.
343 
344### BJ Fogg Behavior Model
345Behavior = Motivation × Ability × Prompt. All three must be present for action.
346 
347**Marketing application**: High motivation but hard to do = won't happen. Easy to do but no prompt = won't happen. Design for all three.
348 
349### EAST Framework
350Make desired behaviors: Easy, Attractive, Social, Timely.
351 
352**Marketing application**: Reduce friction (easy), make it appealing (attractive), show others doing it (social), ask at the right moment (timely).
353 
354### COM-B Model
355Behavior requires: Capability, Opportunity, Motivation.
356 
357**Marketing application**: Can they do it (capability)? Is the path clear (opportunity)? Do they want to (motivation)? Address all three.
358 
359### Activation Energy
360The initial energy required to start something. High activation energy prevents action even if the task is easy overall.
361 
362**Marketing application**: Reduce starting friction. Pre-fill forms, offer templates, show quick wins. Make the first step trivially easy.
363 
364### North Star Metric
365One metric that best captures the value you deliver to customers. Focus creates alignment.
366 
367**Marketing application**: Identify your North Star (active users, completed projects, revenue per customer) and align all efforts toward it.
368 
369### The Cobra Effect
370When incentives backfire and produce the opposite of intended results.
371 
372**Marketing application**: Test incentive structures. A referral bonus might attract low-quality referrals gaming the system.
373 
374---
375 
376## Growth & Scaling Models
377 
378These models explain how marketing compounds and scales.
379 
380### Feedback Loops
381Output becomes input, creating cycles. Positive loops accelerate growth; negative loops create decline.
382 
383**Marketing application**: Build virtuous cycles: more users → more content → better SEO → more users. Identify and strengthen positive loops.
384 
385### Compounding
386Small, consistent gains accumulate into large results over time. Early gains matter most.
387 
388**Marketing application**: Consistent content, SEO, and brand building compound. Start early; benefits accumulate exponentially.
389 
390### Network Effects
391A product becomes more valuable as more people use it.
392 
393**Marketing application**: Design features that improve with more users: shared workspaces, integrations, marketplaces, communities.
394 
395### Flywheel Effect
396Sustained effort creates momentum that eventually maintains itself. Hard to start, easy to maintain.
397 
398**Marketing application**: Content → traffic → leads → customers → case studies → more content. Each element powers the next.
399 
400### Switching Costs
401The price (time, money, effort, data) of changing to a competitor. High switching costs create retention.
402 
403**Marketing application**: Increase switching costs ethically: integrations, data accumulation, workflow customization, team adoption.
404 
405### Exploration vs. Exploitation
406Balance trying new things (exploration) with optimizing what works (exploitation).
407 
408**Marketing application**: Don't abandon working channels for shiny new ones, but allocate some budget to experiments.
409 
410### Critical Mass / Tipping Point
411The threshold after which growth becomes self-sustaining.
412 
413**Marketing application**: Focus resources on reaching critical mass in one segment before expanding. Depth before breadth.
414 
415### Survivorship Bias
416Focusing on successes while ignoring failures that aren't visible.
417 
418**Marketing application**: Study failed campaigns, not just successful ones. The viral hit you're copying had 99 failures you didn't see.
419 
420---
421 
422## Quick Reference
423 
424When facing a marketing challenge, consider:
425 
426| Challenge | Relevant Models |
427|-----------|-----------------|
428| Low conversions | Hick's Law, Activation Energy, BJ Fogg, Friction |
429| Price objections | Anchoring, Framing, Mental Accounting, Loss Aversion |
430| Building trust | Authority, Social Proof, Reciprocity, Pratfall Effect |
431| Increasing urgency | Scarcity, Loss Aversion, Zeigarnik Effect |
432| Retention/churn | Endowment Effect, Switching Costs, Status-Quo Bias |
433| Growth stalling | Theory of Constraints, Local vs Global Optima, Compounding |
434| Decision paralysis | Paradox of Choice, Default Effect, Nudge Theory |
435| Onboarding | Goal-Gradient, IKEA Effect, Commitment & Consistency |
436 
437---
438 
439## Task-Specific Questions
440 
4411. What specific behavior are you trying to influence?
4422. What does your customer believe before encountering your marketing?
4433. Where in the journey (awareness → consideration → decision) is this?
4444. What's currently preventing the desired action?
4455. Have you tested this with real customers?
446 
447---
448 
449## Related Skills
450 
451- **page-cro**: Apply psychology to page optimization
452- **copywriting**: Write copy using psychological principles
453- **popup-cro**: Use triggers and psychology in popups
454- **pricing-page optimization**: See page-cro for pricing psychology
455- **ab-test-setup**: Test psychological hypotheses
456