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- Title
It's not just lunch: extra-pair commensality can trigger sexual jealousy.
- Authors
Kniffin, Kevin M; Wansink, Brian
- Abstract
Do people believe that sharing food might involve sharing more than just food? To investigate this, participants were asked to rate how jealous they (Study 1)--or their best friend (Study 2)--would be if their current romantic partner were contacted by an ex-romantic partner and subsequently engaged in an array of food- and drink-based activities. We consistently find--across both men and women--that meals elicit more jealousy than face-to-face interactions that do not involve eating, such as having coffee. These findings suggest that people generally presume that sharing a meal enhances cooperation. In the context of romantic pairs, we find that participants are attuned to relationship risks that extra-pair commensality can present. For romantic partners left out of a meal, we find a common view that lunch, for example, is not "just lunch."
- Publication
PloS one, 2012, Vol 7, Issue 7, pe40445
- ISSN
1932-6203
- Publication type
Journal Article
- DOI
10.1371/journal.pone.0040445