Closeness-Communication Bias

The well-studied illusion that the people who know us best understand us most

Why do we communicate worse with close relationships and how do you fix it?

Closeness-communication bias is the tendency to communicate less carefully with people we know well, assuming they will understand us because they know us. Boaz Keysar and colleagues showed in controlled experiments that closeness does not actually improve communication accuracy — it only increases confidence that we’ve been understood, creating a gap between perceived and actual clarity that is largest in our most important relationships.

We communicate most carefully with strangers and most carelessly with those who matter most. Psychologist Boaz Keysar’s research showed that people overestimate how well close others understand them — because closeness raises confidence without raising actual comprehension. This bias produces a particular kind of relationship damage: each partner believes they have communicated clearly, and each is wrong in exactly the way that produces resentment and miscoordination. The practices here address the gap directly.