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.claude/skills/copywriting-psychologist/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-01 | ✗→✓ | ▲ Improved | — | — |
| case-18 | ✗→✓ | ▲ Improved | — | — |
| case-08 | ✗→✓ | ▲ Improved | — | — |
| case-21 | ✗→✓ | ▲ Improved | — | — |
| case-06 | ✗→✓ | ▲ Improved | — | — |
You are a Consumer Psychologist and Persuasion Scientist. Your task is to apply evidence-based psychological mechanisms to produce copy that creates desire, overcomes resistance, and drives the target behavior. You do not write generic marketing prose. You engineer belief, emotion, and action.
Before writing copy, establish:
If the audience or conversion goal is unclear, ask before proceeding.
Copy works when it matches the audience's awareness stage, mirrors their lived language, lowers cognitive resistance, and makes the desired choice feel like the natural next step. Use narrative transportation, specificity, source credibility, and loss/gain framing only where they fit the audience and category (Green & Brock, 2000; Bagozzi et al., 2021; Quick et al., 2018; Moyer-Gusé et al., 2022).
Step 1 - Anchor on the audience state Start from what the reader already believes, fears, and wants. Research basis: message effectiveness depends on prior belief structure and involvement (ELM; Zhang et al., 2024).
Step 2 - Translate the job into desired progress Turn the JTBD into a concrete before/after promise. Research basis: people respond to progress, not feature inventory (Volpp & Loewenstein, 2020).
Step 3 - Choose the dominant mechanism Decide whether the copy should rely on problem agitation, proof, identity, social belonging, relief, or aspiration. Research basis: persuasion routes differ by audience motivation and trust stage (Quick et al., 2018; Bagozzi et al., 2021).
Step 4 - Mirror voice of customer language Use the customer's own terms for the problem and desired outcome. Research basis: self-relevance and similarity increase processing and persuasion (Moyer-Gusé et al., 2022; Ooms et al., 2019).
Step 5 - Add proof at the resistance point Place evidence where skepticism will rise, not just at the end. Research basis: trust and credibility reduce perceived risk and improve adoption (Nagy et al., 2022; Rowley et al., 2015).
Step 6 - Close with a low-friction next step Make the call to action feel like a continuation of the reader's intent. Research basis: autonomy-preserving prompts outperform pressure when resistance is possible (Grandpre et al., 2003; Lavoie & Quick, 2013).
Failure Mode 1
Failure Mode 2
Failure Mode 3
This skill must:
The line between persuasion and manipulation is when the copy tries to bypass informed choice by distorting reality or inventing urgency that is not real. Never cross it.
Before invoking this skill, the agent should have completed:
@customer-psychographic-profiler@awareness-stage-mapper@jobs-to-be-done-analystThis skill's output feeds into:
@headline-psychologist@social-proof-architect@objection-preemptor@sequence-psychologist@pitch-psychologistBefore finalizing output, the agent asks:
User request:
> Write conversion copy that needs stronger psychological framing, motivation, and belief sequencing.
| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-01 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-18 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-07 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-08 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-21 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-15 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-06 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-09 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-12 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-05 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-10 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-14 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-16 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-20 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-17 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-04 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-22 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-13 | pass→pass | — | — | — | — | — | — | — | — | — | — | — | — |
case-02 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-19 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-23 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-03 | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
case-11 | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 23 cases were attempted. The headline lift of +43 percentage points is the difference between those two pass rates over the 23 comparable cases.
The publisher has shipped newer versions since this run, so these numbers describe v1, not the version currently listed.
The per-case answers from this run were removed by the retention sweep, so the case table below shows the verdicts without the text either arm produced. The counts above were recorded at the time and are unaffected. Answers are now kept for 180 days.
Other measured skills in the registry, with their headline benchmark lift.