The description names the domain (psychological principles in marketing) and mentions some actions like 'apply' and 'leverage how people think,' but it doesn't list multiple specific concrete actions the skill performs (e.g., 'identifies cognitive biases in campaigns, recommends persuasion frameworks, maps decision-making patterns').

Clearly answers both 'what' (apply psychological principles and behavioral science to marketing) and 'when' (explicit 'Use when' clause with extensive trigger terms). It also includes helpful disambiguation pointing to related skills (cro, pricing, copywriting).

Excellent coverage of natural trigger terms users would say: 'psychology,' 'mental models,' 'cognitive bias,' 'persuasion,' 'behavioral science,' 'why people buy,' 'decision-making,' 'consumer behavior,' 'anchoring,' 'social proof,' 'scarcity,' 'loss aversion,' 'framing,' and 'nudge.' These are highly natural and comprehensive.

The description explicitly disambiguates from related skills (cro for specific pages, pricing for pricing tactics, copywriting for copy framing), creating a clear niche focused on psychological principles and mental models in marketing. This cross-referencing significantly reduces conflict risk.

This is extremely verbose at ~400+ lines, essentially a textbook of psychological concepts Claude already knows well. Definitions like 'Sunk Cost Fallacy: People continue investing in something because of past investment' and 'Anchoring Effect: The first number people see heavily influences subsequent judgments' are explaining basic concepts Claude has deep knowledge of. Very little here is novel information that Claude couldn't generate on its own.

Each model includes a 'Marketing application' paragraph with concrete-ish guidance, but these are brief descriptions rather than executable steps, specific frameworks, or copy-paste templates. There are no code examples, no specific implementation scripts, no concrete output formats, and no worked examples showing input→output transformations.

The skill provides a useful quick reference table mapping challenges to models, task-specific diagnostic questions, and a 4-step process at the top (identify models → explain psychology → provide applications → implement ethically). However, there's no clear workflow for actually applying these models to a specific marketing problem—no validation steps, no decision tree for selecting which models to use, and no structured output format.

This is a monolithic wall of text with 50+ mental models all inline in a single file. There are no bundle files, and the content would benefit enormously from splitting into separate files (e.g., pricing-psychology.md, persuasion-models.md, growth-models.md) with the SKILL.md serving as a concise overview with references. The related skills section at the bottom is helpful but doesn't compensate for the massive inline content.