The science behind affina

Why some encounters become bonds, and others don't

affina doesn't build groups at random. The product applies the 2E model, a framework grounded in fifty years of social psychology research. This page explains it, sources included.

The 2E model starts from a simple observation: every quality relationship is built by accumulating two complementary families of experiences, the two Es. Neither is enough on its own.

The model was formalized by Terrence Tran, founder of affina, from the social psychology literature and the observation of hundreds of in-person matching events.

Emotional E: what you live through together

Shared moments that produce a distinct emotion create a common memory that anchors the relationship. It's the energy of the bond: without it, a relationship stays polite but cold.

  • Laughing together during a game
  • The adrenaline of a challenge or a surprise
  • A striking moment experienced side by side

Expressive E: what you share about yourself

Exchanges where each person shares something personal build mutual understanding and trust. It's the depth of the bond: without it, you keep good memories of people you don't actually know.

  • Telling a personal story
  • Sharing a value or a conviction
  • Saying honestly what you feel or what you're looking for

The rule: both, alternating

A really fun night without personal conversation produces shallow relationships. A deep discussion without shared moments produces intellectual but cold ones. Bonds form when both types of experiences accumulate and balance out. And that is exactly what an event can orchestrate.

What the research shows

Every building block of the model rests on published, heavily cited work. The blog articles cover each study in depth; here is the short version.

45 minutes of structured exchange, with increasingly personal questions, are enough to create measurable closeness between two strangers.

Aron et al., 1997, the “Fast Friends” procedure, known as the 36 questions

Disclosing is linked to liking: we like people who confide in us, and we like the people we have confided in even more.

Collins & Miller, 1994, meta-analysis in Psychological Bulletin

The same experience is felt more intensely when it is shared with someone, even without talking.

Boothby, Clark & Bargh, 2014, Psychological Science

Time spent matters, but the type of interaction matters more: small talk alone does not move a friendship forward.

Hall, 2019, Journal of Social and Personal Relationships

Beyond roughly four people, a conversation naturally splits into sub-groups.

Dunbar, Duncan & Nettle, 1995, Human Nature

Strong social ties are associated with about 50% higher odds of survival, an effect comparable to quitting smoking.

Holt-Lunstad et al., 2010, meta-analysis in PLOS Medicine

How affina applies the model

The 2E model is not a marketing claim added after the fact: it structures every step of the product.

Compatible groups

A short questionnaire with discriminating questions builds groups of 4 to 6 people with real affinities: the size at which a single conversation can hold.

Calibrated questions

Every conversation question is scored on the model's two axes (emotional and expressive) and on its depth, so the conversation escalates progressively: warm up, build, reflect.

The right exchange at the right time

Group reveal, table questions, rotation: the flow alternates shared moments and personal conversations instead of leaving it to chance.

The science articles

Each article takes one study or one precise question, and connects it to what you can do at an event.

Science9 min

Why shared emotions bond a group: what the science says

The same square of chocolate tastes better when someone else is tasting it at the same moment. Behind this lab oddity lies a fundamental mechanism: shared emotion is an amplifier, and a social glue.

Read
Science11 min

The 2E model: the science behind encounters that last

Two types of experiences build a relationship: what you live through together and what you tell each other. The 2E model puts both into one equation, and fifty years of social psychology back it up.

Read

Put the science to work at your event

Participants answer a short questionnaire, affina builds the groups and provides the calibrated questions.