Influence: The Psychology of Persuasion · chapter 2 · id influence-c2-04-dennis-regans-1971-study-showe
“Dennis Regan's 1971 study showed that a person who had received an uninvited Coke from a confederate ('Joe') bought twice as many raffle tickets as those who received no favor, regardless of whether they liked Joe.”
TRUE, BUTconfidence: medium⚠ extracted by pipeline, re-audit pending
Receipts
Regan (1971), Effects of a Favor and Liking on Compliance, Journal of Experimental Social Psychology 7(6)FLAGGED: DOI not in registry
Subjects who received a favor from Joe bought significantly more raffle tickets than those who did not, and this effect was independent of liking for Joe.
Burger, Horita, Kinoshita, Roberts & Vera (1997), Effects of Time on the Norm of Reciprocity, Basic and Applied Social Psychology 19(1)FLAGGED: dead link (404)
The reciprocity effect was found when the request came minutes after the favor but not when it came one week later, suggesting temporal limitations on the norm.
This claim is a stable, citable object. If you can falsify a verdict, tell us. Corrections are loud here.