Mmcp.market

marketing-psychology skill

by coreyhaines31·coreyhaines31/marketingskills·52k stars·MIT

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. For applying psychology to specific pages, see cro; for pricing tactics, see pricing; for copy framing, see copywriting.

A100/100content scan

Is the marketing-psychology skill safe?

Clean: nothing in its files matched our rules. We read 2 files in the folder on 2026-09-28.

No findings.

Install the marketing-psychology skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/coreyhaines31/marketingskills.git /tmp/marketingskills
mkdir -p ~/.claude/skills
cp -r /tmp/marketingskills/skills/marketing-psychology ~/.claude/skills/marketing-psychology
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

Marketing Psychology & Mental Models

You 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.

How to Use This Skill

Check for product marketing context first: If .agents/product-marketing.md exists (or .claude/product-marketing.md, or the legacy product-marketing-context.md filename, in older setups), read it before applying mental models. Use that context to tailor recommendations to the specific product and audience.

Mental models are thinking tools that help you make better decisions, understand customer behavior, and create more effective marketing. When helping users:

  1. Identify which mental models apply to their situation
  2. Explain the psychology behind the model
  3. Provide specific marketing applications
  4. Suggest how to implement ethically

Foundational Thinking Models

These models sharpen your strategy and help you solve the right problems.

First Principles

Break 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.

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.

Jobs to Be Done

People don't buy products—they "hire" them to get a job done. Focus on the outcome customers want, not features.

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.

Circle of Competence

Know what you're good at and stay within it. Venture outside only with proper learning or expert help.

Marketing application: Don't chase every channel. Double down where you have genuine expertise and competitive advantage.

Inversion

Instead of asking "How do I succeed?", ask "What would guarantee failure?" Then avoid those things.

Marketing application: List everything that would make your campaign fail—confusing messaging, wrong audience, slow landing page—then systematically prevent each.

Occam's Razor

The simplest explanation is usually correct. Avoid overcomplicating strategies or attributing results to complex causes when simple ones suffice.

Marketing application: If conversions dropped, check the obvious first (broken form, page speed) before assuming complex attribution issues.

Pareto Principle (80/20 Rule)

Roughly 80% of results come from 20% of efforts. Identify and focus on the vital few.

Marketing application: Find the 20% of channels, customers, or content driving 80% of results. Cut or reduce the rest.

Local vs. Global Optima

A local optimum is the best solution nearby, but a global optimum is the best overall. Don't get stuck optimizing the wrong thing.

Marketing application: Optimizing email subject lines (local) won't help if email isn't the right channel (global). Zoom out before zooming in.

Theory of Constraints

Every system has one bottleneck limiting throughput. Find and fix that constraint before optimizing elsewhere.

Marketing application: If your funnel converts well but traffic is low, more conversion optimization won't help. Fix the traffic bottleneck first.

Opportunity Cost

Every choice has a cost—what you give up by not choosing alternatives. Consider what you're saying no to.

Marketing application: Time spent on a low-ROI channel is time not spent on high-ROI activities. Always compare against alternatives.

Law of Diminishing Returns

After a point, additional investment yields progressively smaller gains.

Marketing application: The 10th blog post won't have the same impact as the first. Know when to diversify rather than double down.

Second-Order Thinking

Consider not just immediate effects, but the effects of those effects.

Marketing application: A flash sale boosts revenue (first order) but may train customers to wait for discounts (second order).

Map ≠ Territory

Models and data represent reality but aren't reality itself. Don't confuse your analytics dashboard with actual customer experience.

Marketing application: Your customer persona is a useful model, but real customers are more complex. Stay in touch with actual users.

Probabilistic Thinking

Think in probabilities, not certainties. Estimate likelihoods and plan for multiple outcomes.

Marketing application: Don't bet everything on one campaign. Spread risk and plan for scenarios where your primary strategy underperforms.

Barbell Strategy

Combine extreme safety with small high-risk/high-reward bets. Avoid the mediocre middle.

Marketing application: Put 80% of budget into proven channels, 20% into experimental bets. Avoid moderate-risk, moderate-reward middle.

Understanding Buyers & Human Psychology

These models explain how customers think, decide, and behave.

Fundamental Attribution Error

People attribute others' behavior to character, not circumstances. "They didn't buy because they're not serious" vs. "The checkout was confusing."

Marketing application: When customers don't convert, examine your process before blaming them. The problem is usually situational, not personal.

Mere Exposure Effect

People prefer things they've seen before. Familiarity breeds liking.

Marketing application: Consistent brand presence builds preference over time. Repetition across channels creates comfort and trust.

Availability Heuristic

People judge likelihood by how easily examples come to mind. Recent or vivid events seem more common.

More skills from coreyhaines31/marketingskills

  • Aab-testingWhen the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program," or "experiment playbook." Use this whenever someone is comparing two approaches and wants to measure which performs better, or when they want to build a systematic experimentation practice. For tracking implementation, see analytics. For page-level conversion optimization, see cro.
  • Aad-creativeWhen the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text, or full ad variations — for any paid advertising platform. Also use when the user mentions 'ad copy variations,' 'ad creative,' 'generate headlines,' 'RSA headlines,' 'bulk ad copy,' 'ad iterations,' 'creative testing,' 'write me some ads,' 'Facebook ad copy,' 'Google ad headlines,' 'LinkedIn ad text,' 'static ads,' 'ad templates,' 'iMessage ad,' 'chat reveal ad,' 'ChatGPT ad,' 'Apple Notes ad,' 'AirDrop ad,' 'creative strategy,' 'creative roadmap,' 'creative retro,' 'hook writing,' 'creative review page,' 'present ad creative for approval,' 'motion video ad,' 'faceless video ad,' 'UGC ad,' 'greenscreen ad,' 'TikTok/Reels ad format,' 'which ad format to make,' 'Meta ad format tier list,' or 'creative format taxonomy.' Use this whenever someone needs to produce ad copy at scale or iterate on existing ads. For campaign strategy and targeting, see ads. For landing page copy, see copywriting.
  • CadsWhen the user wants help with paid advertising campaigns on Google Ads, Meta (Facebook/Instagram), LinkedIn, Twitter/X, or other ad platforms. Also use when the user mentions 'PPC,' 'paid media,' 'ROAS,' 'CPA,' 'ad campaign,' 'retargeting,' 'audience targeting,' 'Google Ads,' 'Facebook ads,' 'LinkedIn ads,' 'ad budget,' 'cost per click,' 'ad spend,' 'should I run ads,' 'ABM,' 'account-based marketing,' 'B2B ads,' 'lead quality,' 'negative keywords,' 'Performance Max,' 'thought leader ads,' or 'when should I kill an ad.' Use this for campaign strategy, audience targeting, bidding, and optimization. For bulk ad creative generation and iteration, see ad-creative. For landing page optimization, see cro.
  • Aai-seoWhen the user wants to optimize content for AI search engines, get cited by LLMs, or appear in AI-generated answers. Also use when the user mentions 'AI SEO,' 'AEO,' 'GEO,' 'LLMO,' 'answer engine optimization,' 'generative engine optimization,' 'LLM optimization,' 'AI Overviews,' 'optimize for ChatGPT,' 'optimize for Perplexity,' 'AI citations,' 'AI visibility,' 'zero-click search,' 'how do I show up in AI answers,' 'LLM mentions,' 'optimize for Claude/Gemini,' 'llms.txt,' 'llms-full.txt,' 'OKF,' 'Open Knowledge Format,' 'knowledge bundle,' 'agent-readable site,' 'agent readiness,' 'is my site agent-ready,' 'WebMCP,' 'do listicles still work for AI,' 'ChatGPT stopped citing comparison pages,' or 'AI citation format shift.' Use this whenever someone wants their content to be cited or surfaced by AI assistants and AI search engines. For traditional technical and on-page SEO audits, see seo-audit. For structured data implementation, see schema.
  • AanalyticsWhen the user wants to set up, improve, or audit analytics tracking and measurement. Also use when the user mentions "set up tracking," "GA4," "Google Analytics," "conversion tracking," "event tracking," "UTM parameters," "tag manager," "GTM," "analytics implementation," "tracking plan," "how do I measure this," "track conversions," "Mixpanel," "Segment," "are my events firing," or "analytics isn't working." Use this whenever someone asks how to know if something is working or wants to measure marketing results. For choosing attribution models, comparing multi-touch/MMM/incrementality, or reconciling conflicting numbers across tools, see attribution. For A/B test measurement, see ab-testing.
  • AasoWhen the user wants to audit or optimize an App Store or Google Play listing. Also use when the user mentions 'ASO audit,' 'app store optimization,' 'optimize my app listing,' 'improve app visibility,' 'app store ranking,' 'audit my listing,' 'why aren't people downloading my app,' 'improve my app conversion,' 'keyword optimization for app,' or 'compare my app to competitors.' Use when the user shares an App Store or Google Play URL and wants to improve it.
  • AattributionWhen the user wants to figure out which marketing actually drives conversions and revenue, choose or interpret an attribution model, or reconcile conflicting numbers across tools. Also use when the user mentions "attribution," "attribution model," "first-touch vs last-touch," "multi-touch," "which channel drives revenue," "what's my real CAC," "my dashboards disagree," "Google/Meta says X but GA says Y," "media mix model," "MMM," "incrementality," "geo lift," "holdout test," "how did you hear about us," "self-reported attribution," "dark social," or wants to instrument attribution themselves — "stitch my bookings to their source," "SavvyCal/Calendly attribution," "close the identify gap," "track conversions on a third-party domain," "first-party / self-hosted attribution." For event tracking setup and UTMs, see analytics. For ad-platform pixels/CAPI, see ads. For pipeline and CRM revenue reporting, see revops. For the AI-search attribution blind spot, see ai-seo.
  • Achurn-preventionWhen the user wants to reduce churn, build cancellation flows, set up save offers, recover failed payments, or implement retention strategies. Also use when the user mentions 'churn,' 'cancel flow,' 'offboarding,' 'save offer,' 'dunning,' 'failed payment recovery,' 'win-back,' 'retention,' 'exit survey,' 'pause subscription,' 'involuntary churn,' 'people keep canceling,' 'churn rate is too high,' 'how do I keep users,' or 'customers are leaving.' Use this whenever someone is losing subscribers or wants to build systems to prevent it. For post-cancel win-back email sequences, see emails. For in-app upgrade paywalls, see paywalls.
  • Aco-marketingWhen the user wants to find co-marketing partners, plan joint campaigns, or brainstorm partnership opportunities. Use when the user says 'co-marketing,' 'partner marketing,' 'joint campaign,' 'who should we partner with,' 'integration marketing,' 'cross-promotion,' 'collaborate with another company,' 'partnership ideas,' or 'co-brand.' For customer referral programs, see referrals. For launch-specific partnerships, see launch.
  • Acold-emailWrite B2B cold emails and follow-up sequences that get replies. Use when the user wants to write cold outreach emails, prospecting emails, cold email campaigns, sales development emails, or SDR emails. Also use when the user mentions "cold outreach," "prospecting email," "outbound email," "email to leads," "reach out to prospects," "sales email," "follow-up email sequence," "nobody's replying to my emails," or "how do I write a cold email." Covers subject lines, opening lines, body copy, CTAs, personalization, and multi-touch follow-up sequences. For warm/lifecycle email sequences, see emails. For sales collateral beyond emails, see sales-enablement.
  • Acommunity-marketingBuild and leverage online communities to drive product growth and brand loyalty. Use when the user wants to create a community strategy, grow a Discord or Slack community, manage a forum or subreddit, build brand advocates, increase word-of-mouth, drive community-led growth, engage users post-signup, or turn customers into evangelists. Trigger phrases: \"build a community,\" \"community strategy,\" \"Discord community,\" \"Slack community,\" \"community-led growth,\" \"brand advocates,\" \"user community,\" \"forum strategy,\" \"community engagement,\" \"grow our community,\" \"ambassador program,\" \"community flywheel.\"
  • Acompetitor-profilingWhen the user wants to research, profile, or analyze competitors from their URLs. Also use when the user mentions 'competitor profile,' 'competitor research,' 'competitor analysis,' 'profile this competitor,' 'analyze competitor,' 'competitive intelligence,' 'competitor deep dive,' 'who are my competitors,' 'competitor landscape,' 'competitor dossier,' 'competitive audit,' or 'research these competitors.' Input is a list of competitor URLs. Output is structured competitor profile markdown files. For creating comparison/alternative pages from profiles, see competitors. For sales-specific battle cards, see sales-enablement.

All agent skills → · MCP servers