The Trust Equation is a framework developed by David Maister, Charles Green, and Robert Galford in their book 'The Trusted Advisor.' It provides a practical formula for understanding what drives trust in professional relationships:
**Trust = (Credibility + Reliability + Intimacy) / Self-Orientation**
## The Four Components
### Credibility (words)
Do people believe what you say? Credibility comes from expertise, credentials, track record, and the quality of your ideas. It's the cognitive dimension of trust — 'I can trust what they say about this topic.'
Building credibility: demonstrate expertise honestly, cite evidence, admit what you don't know, be accurate and precise in your claims.
### Reliability (actions)
Do people believe you'll follow through? Reliability is about consistency between promises and delivery. It's demonstrated through repeated actions over time — 'I can trust them to do what they said they'd do.'
Building reliability: keep commitments, deliver on time, be consistent, make only promises you can keep, communicate early when you can't deliver.
### Intimacy (emotions)
Do people feel safe sharing information with you? Intimacy here means emotional safety, not physical closeness. It's about discretion, empathy, and the sense that you won't misuse vulnerable information — 'I can trust them with this.'
Building intimacy: listen actively, keep confidences, show genuine interest, be appropriately vulnerable yourself, create psychologically safe spaces.
### Self-Orientation (motives)
Are you focused on yourself or on the other person? Self-orientation is the denominator — the trust killer. High self-orientation (being primarily focused on your own interests, your own agenda, or appearing smart) divides and diminishes all the trust you've built through the numerator.
Reducing self-orientation: focus on understanding before being understood, prioritize the other person's needs, let go of the need to be right, listen to learn rather than to respond.
## Why the Denominator Matters Most
The mathematical structure of the equation reveals a key insight: self-orientation has a disproportionate impact. No matter how credible, reliable, or intimate you are, high self-orientation destroys trust. Someone who is extremely competent and reliable but clearly in it only for themselves will never be truly trusted.
Conversely, someone with moderate credibility and reliability but genuinely low self-orientation — someone who clearly cares about your interests — will often be trusted more than the brilliant expert who's obviously self-serving.
## Practical Applications
- **Self-assessment**: Rate yourself on each component (1-10) to identify where your trust gaps are
- **Relationship diagnosis**: When trust is low, determine which component is lacking
- **Team building**: Help teams understand that trust requires all four components
- **Client relationships**: Use the equation to systematically build trust with clients and stakeholders
- **Leadership**: Leaders who understand the equation focus on reducing self-orientation rather than just building credibility
The Trust Equation makes the abstract concept of trust concrete and actionable. Instead of vaguely trying to 'build trust,' you can identify exactly which dimension needs attention and take targeted action.