Indebtedness
The uncomfortable sense of owing someone after they've done you a favor.
What it means
Indebtedness is the uncomfortable psychological state of feeling obligated to repay another person after receiving a benefit, favor, or gift, and it is the felt force behind the reciprocity norm. Unlike gratitude, which is a warm, positive emotion that strengthens bonds and is felt when help seems freely and benevolently given, indebtedness is an aversive tension that motivates repayment chiefly to discharge the obligation and restore equity, and it can sour a relationship if the debt feels burdensome or strategically created. The discomfort is strong enough that people will repay even unwanted favors, accept worse deals from those they owe, and sometimes avoid benefactors altogether to escape the obligation. This is precisely what makes reciprocity a potent influence tactic: an unsolicited small gift can induce a sense of indebtedness that yields a disproportionately larger return, as with free samples and token concessions. Whether a benefit produces grateful warmth or burdensome indebtedness depends on perceived motives, cost, and the recipient's autonomy. It matters because so much social and commercial exchange runs on the leverage of owing.
Examples
Handed a free sample or a small unexpected gift, many shoppers feel obliged to buy or give something back, repaying far more than the favor was worth.
A colleague quietly covers your shift without being asked, and weeks later you agree to help them move house on a weekend you had guarded — the debt nags until it is paid.
A friend insists on paying for dinner, and you find yourself putting off the next meet-up — not because you like them less, but because the unrepaid favour makes it awkward.
First described in Reciprocity norm articulated by Alvin Gouldner (1960).