Relationship researcher John Gottman's long-running studies, based on decades of observing couples in his 'Love Lab,' found that successful long-term couples don't have fewer conflicts than unsuccessful ones — they repair after conflict more effectively. A 'repair attempt' is any move, verbal or nonverbal, that de-escalates tension during or after an argument: a moment of humor, a physical gesture, an explicit 'can we start this over,' or simply naming that things got heated. What predicts relationship success isn't conflict frequency; it's whether repair attempts land and get accepted — Gottman's research claims he can predict divorce with striking accuracy just by observing whether repair attempts succeed or fail in a short conversation.
The skill has two halves that both matter: making repair attempts (initiating de-escalation instead of doubling down) and receiving them (recognizing and accepting a partner's repair attempt instead of ignoring it because you're still upset). A couple where one partner reliably offers repair attempts but the other reliably ignores them is often worse off than a couple that argues more but repairs consistently on both sides.