Trust is the foundation of any strong relationship. But how can you tell if someone is trustworthy—or if you should open up to them? While detecting lies isn’t always easy, research suggests there are clear behavioral cues that signal trustworthiness.
Why Trust Matters
Some people naturally trust others more, influenced by early life experiences. Psychologist Erik Erikson believed that a sense of basic trust (or mistrust) develops in infancy and shapes future relationships. Similarly, attachment theory suggests that feeling secure early in life helps people form healthier bonds later.
But even if you tend to be cautious, your ability to trust others depends more on their behavior than your instincts. So, what should you look for?
Trust in Therapy—And Everyday Life
Trust is especially crucial in psychotherapy. If a patient doesn’t trust their therapist, progress is unlikely. A 2025 study by Shimrit Fisher and colleagues at the University of Haifa explored epistemic trust (ET)—the ability to believe and internalize information from others. In therapy, ET helps patients accept insights and grow.
But ET isn’t just for therapy. Every interaction—whether with a friend, partner, or even a pharmacist—requires evaluating trust.
The Three Dimensions of Trust
The Haifa researchers developed the Epistemic Trust Rating System (ETRS) to measure trust in therapy. They identified three key indicators:
Sharing
- Low trust: Avoids sharing feelings.
- High trust: Openly and honestly expresses emotions.
“We-Mode” Communication
- Low trust: Interruptions, silence, or dismissive language.
- High trust: Mutual understanding, finishing each other’s thoughts.
Openness to Learning
- Low trust: Rejects others’ perspectives.
- High trust: Willing to change and grow from feedback.
Applying These Lessons
These signs aren’t just for therapy—they work in daily life. Ask yourself:
- Does this person listen and validate me?
- Do we communicate smoothly, or do they dominate the conversation?
- Are they open to new ideas, or dismissive?
People with low trust often fear rejection or feel detached. If you notice these traits, building trust may take more effort.
Final Takeaway
Trust isn’t just about honesty—it’s about connection. By paying attention to sharing, communication, and openness, you can navigate relationships with more confidence. Whether in therapy, friendships, or chance encounters, these three clues can guide you toward deeper, more meaningful bonds.
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