Evolutionary Psychology

Evolutionary Psychology is moving to SAGE. The new address is evp.sagepub.com. Submissions here.

Note from the Editors

After more than a decade of independent operation during which Evolutionary Psychology has grown to become a premier publication outlet for evolutionary psychological research, we are thrilled to have found a permanent home with SAGE. The success of the Journal over the past decade made it impossible for the editors and their current and former graduate students to continue to personally fund and manage the Journal. With the commitment, attention, and resources provided by SAGE, Evolutionary Psychology has a very bright future. A small Author Publication Charge of US$195 (assessed only on submissions accepted for publication following rigorous peer review) ensures that all previous and future articles published in the Journal will remain open access and freely accessible. We are deeply grateful to the Associate Editors, Editorial Board Members, editorial production staff, and the reviewers and readers who have supported the Journal since its inception in 2003, and look forward to working with you and with SAGE to continue to grow Evolutionary Psychology.

Robert Kurzban

The Evolutionary Psychology Blog

By Robert Kurzban

Robert Kurzban is an Associate Professor at the University of Pennsylvania and author of Why Everyone (Else) Is A Hypocrite. Follow him on Twitter: @rkurzban

Shrek II, from an Evolutionary Perspective

Published 25 October, 2010

In Shrek II, Princess Fiona and Shrek visit Fiona’s parents in the land of Far Far Away – which in certain respects bears an unusual resemblance to Beverly Hills – where conflict – and hilarity! – erupts over the issue of Fiona’s mate choice and, related, the succession to the throne. Had Fiona married Prince Charming, as her parents originally intended, the throne would have passed to this happy couple, and their offspring would have been, presumably, more or less human. But because Fiona married Shrek the Ogre rather than Prince Charming, both offspring and succession are put in doubt.

From an evolutionary perspective, it is very easy to see why parents should be concerned about their offspring mating with a member of a different species. Given the likelihood of the production of viable offspring – usually low, but the magical setting of Shrek makes this unclear – their fitness interests are harmed by this choice.

Of course, from an evolutionary perspective, Fiona’s fitness interests are also harmed by mating with a member of a different species. So, under normal conditions, parents and children should be equally unfavorably disposed toward an interspecies match. In some ways, this makes all of the conflict between parents and offspring puzzling, since they both win and lose with the same mate choices.

But parents and children don’t always have identical interests. A paper by Shelli Dubbs and Abraham Buunk just published in Evolutionary Psychology makes (roughly) the following argument. Suppose Fiona’s parents have other offspring. Suppose further that by marrying Shrek rather than Charming, Fiona is getting good (ogre) genes, but losing out in terms of investment. Charming, after all, seems to be well connected and well off; he is, well, Charming. In contrast, Shrek, holding aside a talking donkey, is basically friendless. Shrek, then, might be good for Fiona – she gets the sexy ogre – but less good for Fiona’s parents’ other offspring in the following sense. As Dubs and Buunk put it, certain mate choices “can lead to the child needing extra support from its parents in order to sustain themselves and the child’s offspring. Relying on the parents for support is, of course, much more costly to the parents than it is for the child. Parents, who would ideally like to distribute their resources evenly to all offspring, would see this as detrimental to their other children and grandchildren.”

They’re saying that if Fiona mates with Shrek, Fiona’s parents lose Charming’s resources, and so their other offspring are worse off than they would otherwise be.

In their work, drawing on participants from the mundane, real world, they show that children like traits that go with good genes, but parents prefer traits that connote potential investment. Fiona wants the sexy ogre, but King Harold would prefer she marry the sensible (if somewhat insufferable) Prince Charming.

The End

Copyright 2010 Robert Kurzban, all rights reserved.

Opinions expressed in this blog do not reflect the opinions of the editorial staff of the journal.

Evolutionary Psychology - An open access peer-reviewed journal - ISSN 1474-7049 © Ian Pitchford and Robert M. Young; individual articles © the author(s)

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