Make the gift personal and unexpected

Unsolicited, personal gifts generate more reciprocity obligation than generic or expected ones.

Why it works

The strength of the reciprocity pull correlates with how the gift is perceived: a gift that is tailored to the recipient (showing they were thought of specifically) generates a stronger felt obligation than a generic token. The "unexpected" dimension matters because expected perks (standard discounts, loyalty gifts) are discounted as part of the business relationship rather than as personal generosity.

How to do it

1. Pay attention to what the person specifically mentioned they valued or needed.
2. Tailor the gift or favor to that — a relevant article, an introduction to someone they’d find useful, a specific solution to a problem they named.
3. Don’t announce it as reciprocity bait; give it cleanly and let the norm do its work.

Evidence

Personalization of gifts and favors is a moderator noted in the reciprocity literature; studies on charitable giving and sales consistently find that personalized gestures outperform generic ones in generating compliance. The mechanism is perceived sincerity — the cue that the giver had you specifically in mind. (observational)

Personalization effects are documented in commercial and charitable contexts; direct experimental isolation of personalization as the active ingredient in interpersonal reciprocity is less precise.

Common mistake

Using a form gift that is meant to seem personal but isn’t — gift cards with your logo, mass-personalized emails — which reads as low-effort and reduces, not increases, the reciprocity pull.