Why You Should Smile, Even After a Strikeout


Ernest L. Abel and Michael L. Kruger. “Smile Intensity in Photographs Predicts Longevity,” Psychological Science, 2010.

Smiles and Mortality

In the second step of the model, we examined the effect of smile intensity, controlling for the previously mentioned variables. The model was still statistically significant, χ2(2, N = 162) = 23.7, p < .02). Adding smile ratings led to a significant improvement in predicting mortality, χ2(2, N = 162) = 8.2, p < .017. Players with Duchenne smiles were half as likely to die in any year compared with nonsmilers, HR = 0.50, p = .006 (see Fig. 1), but Duchenne smilers did not differ significantly from partial smilers, who in turn did not differ significantly from nonsmilers. In this model, smile intensity accounted for 35% of the explained variability in survival (ratio of chi-squares: 8.2/23.7).

See, there’s no reason to be mad at Andruw.

Thanks to my colleague David Mitchell.

2 Responses “Why You Should Smile, Even After a Strikeout”

  1. Peter Hjort says:

    [off-topic]
    JC,
    I really enjoyed your HGH article in ESPN the Magazine. I am perfectly comfortable saying it is the best article I’ve ever read in that publication. Well done.

  2. dom says:

    I never would have thought to make this comparison. interesting. keep smilin!