How to recognise a real friendship — 5 research-based criteria

Adulthood is not kind to friendships: work, family and distance take their toll, and the calendar beats closeness. All the more important to recognise which relationships truly carry us — and which merely occupy slots in the schedule. Research on friendship functions (Mendelson & Aboud, among others) and social networks (Dunbar) suggests five hard criteria.

1. You can confide — and you do not regret it

Self-disclosure is the engine of closeness: friendship deepens as we gradually entrust more personal things and meet acceptance rather than judgement. If you feel shame after confiding, or your words come back to you from third parties — that is an alarm signal.

2. Reciprocity — roughly, over the long run

Healthy friendships do not keep books, but over time the effort balances out: initiating contact, listening, remembering what matters. A relationship where one side constantly broadcasts and the other merely receives is not a friendship but an audience.

3. Support when it is inconvenient

The real test does not happen over coffee but when helping costs something: a move, a hospital, a 2 a.m. crisis. It is not about grand gestures every week — it is about the certainty that you could call.

4. Joy at your successes

A surprisingly sensitive litmus test: a friend's envy hurts more than a stranger's indifference. Research on "capitalisation" shows that responses to good news build a relationship more strongly than support in bad times — the other person's enthusiasm when you share a win marks a safe bond.

5. You have survived a conflict

Friendships without a single friction over the years can be shallow or cautious. The most durable ones have a disagreement, a conversation and a repair behind them — proof the bond withstands a difference of opinion.

The friendship quality test walks you through these criteria for one specific relationship. The score is not for crossing people out — it is for consciously investing in the bonds that genuinely strengthen you.