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.". © 2012 Kniffin, Wansink.
CITATION STYLE
Kniffin, K. M., & Wansink, B. (2012). It’s not just lunch: Extra-pair commensality can trigger sexual jealousy. PLoS ONE, 7(7). https://doi.org/10.1371/journal.pone.0040445
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