From grimoire
Applies behavioral nudge principles (defaults, salience, framing, social norms, implementation intentions) to design choice environments and product defaults that guide user decisions without coercion.
How this skill is triggered — by the user, by Claude, or both
Slash command
/grimoire:apply-nudge-design-principlesThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
Apply behavioral nudge design principles — defaults, salience, framing effects, social norm messaging, and implementation intentions — to design choice environments that guide people toward better outcomes without coercion or elimination of options.
Apply behavioral nudge design principles — defaults, salience, framing effects, social norm messaging, and implementation intentions — to design choice environments that guide people toward better outcomes without coercion or elimination of options.
Adopted by: Richard Thaler and Cass Sunstein's "Nudge" (2008, revised 2021) won Thaler the Nobel Prize in Economics (2017). The UK Behavioural Insights Team (BIT), the Obama White House's Social and Behavioral Sciences Team, and equivalent organizations in 100+ countries implement nudge-based policy interventions. All major digital platforms (Google, Apple, Meta) design choice architecture in their products using these principles. Impact: Johnson & Goldstein's "Defaults and Donation" (2003, Science) demonstrated that organ donation rates ranged from 4.25% (opt-in) to 97.9% (opt-out) across European countries — the only difference was the default on the registration form. Default effects of similar magnitude appear in retirement savings (Madrian & Shea, 2001), green energy enrollment, medication adherence, and food choice. Nudge interventions are among the most cost-effective behavior change tools available because they work with existing choice patterns rather than requiring motivation change.
The default effect is the most powerful nudge: people disproportionately choose the default option because changing requires action (and action has friction cost):
Transparency requirement: defaults should be disclosed; people should be able to easily change them; a default that is buried in fine print to prevent changing is not ethical choice architecture
Salience (making the desired option visible and prominent) dramatically increases its selection probability:
Information architecture: present the most relevant information prominently; secondary information should be accessible but not competing with primary information; complexity and information overload reduce the probability of any action
Framing effects occur because the same information presented differently produces different decisions:
Honest framing: frame truthfully using the most decision-relevant emphasis; framing that misleads about the nature of the choice is manipulation, not nudge
People look to others' behavior as information about what is normal and appropriate:
Precision matters: "most people" is less effective than "83% of your neighbors"; specific local norms are more effective than generic social norms.
An implementation intention converts a vague intention into a specific plan:
Concrete application: after any health, financial, or behavioral communication that aims to change behavior, include an implementation-intention prompt: "When will you do this? Where? What is your first step?" These questions convert intention to planned action.
npx claudepluginhub jeffreytse/grimoire --plugin grimoireApplies behavioral-economics loss framing to copy, UX, email, or pricing. Calibrates reference-point framing and loss intensity based on audience risk tolerance and trust level.
Designs persuasive communication and ethical influence campaigns using Cialdini's principles (reciprocity, social proof, authority, scarcity). Analyzes why messages fail to shift attitudes or behavior.
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