From grimoire
Applies nonverbal communication principles (eye contact, posture, gesture, spatial positioning) to reinforce message delivery and build credibility in high-stakes conversations and presentations.
How this skill is triggered — by the user, by Claude, or both
Slash command
/grimoire:apply-nonverbal-communication-principlesThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
Apply nonverbal communication principles — eye contact, posture, gesture, and spatial positioning — to reinforce verbal messages, establish credibility, and build rapport in high-stakes conversations and presentations.
Apply nonverbal communication principles — eye contact, posture, gesture, and spatial positioning — to reinforce verbal messages, establish credibility, and build rapport in high-stakes conversations and presentations.
Adopted by: Albert Mehrabian's research on nonverbal communication (1971) — often cited as "55% body language, 38% tone, 7% words" — is widely referenced across leadership, negotiation, and sales training (though the finding specifically applies to emotional communication, not all communication). The FBI's behavioral analysis unit, professional negotiators (Voss "Never Split the Difference"), and executive coaches (Goman, Cuddy) all teach nonverbal communication as a primary professional skill. TED Talk coaching prepares speakers extensively on nonverbal alignment before content. Impact: Incongruence between verbal and nonverbal messages is detected by listeners faster than conscious awareness (Ekman 2003) — a speaker saying "I'm confident" while avoiding eye contact and hunching sends a contradictory signal that undermines the verbal claim. Nonverbal alignment increases perceived credibility, trustworthiness, and authority. Conversely, nonverbal signals of dominance or discomfort in high-stakes negotiations directly affect outcomes.
Posture communicates confidence before speaking begins:
Power posture research (Cuddy): holding an expansive, upright posture for 2 minutes before a high-stakes interaction correlates with reduced cortisol and increased subjective confidence in research subjects (though the hormone findings are debated, the behavioral confidence effect is reported consistently).
Eye contact signals engagement, confidence, and trustworthiness:
In presentations: make eye contact with individuals, not the group — one thought, one person. Move to a different person for the next thought. This makes each audience member feel addressed personally.
Cultural note: eye contact norms vary significantly by culture; direct sustained eye contact is expected and signals respect in many Western cultures; it may be perceived as aggressive or disrespectful in some East Asian, Middle Eastern, and Indigenous cultures. Calibrate to the specific cultural context.
Effective gesture:
Avoid:
In presentations: keep hands visible above the waist; arms hanging at the side reads as stiff; hands clasped in front reads as restrained; hands loosely available at waist level is the professional neutral.
Edward Hall's proxemics research (1966) defines distance zones:
Application: in one-on-one conversations, maintain the personal zone; approaching closer than 18 inches without established intimacy creates discomfort. In group presentations, moving into the social zone (walking toward the audience) increases engagement and perceived directness; retreating to the public zone creates distance.
Mirroring — subtly matching another person's posture, pace, and vocal rhythm — is a natural rapport-building mechanism that happens unconsciously in positive interactions:
Research consistently shows that people who naturally mirror are rated as more likable and trustworthy. Applied consciously, the effect is genuine when done subtly — not when mimicry is obvious.
The most powerful nonverbal principle: alignment between what you say and how you say it.
Incongruence signals:
Congruence check before high-stakes conversations:
npx claudepluginhub jeffreytse/grimoire --plugin grimoireProjects personal authority in high-stakes interactions through physical grounding, deliberate pacing, and controlled speech. Use for board meetings, negotiations, crisis briefings.
Coaches active listening skills: receptive mindset, reflective paraphrasing, clarifying questions, and synthesis. Use for improving communication, preparing for difficult conversations, or when you talk more than you listen.
Self-coaching analysis of meeting behavior across transcripts — talk-time ratio, filler words, hedging, monologue length, energy patterns, and win/loss correlations when meetings are tagged.