What is it about?

Skin color variation among human populations is one of the most fascinating examples of natural selection on humans and it has captured the attention of humans in several cultures all over the world, and has been perceived as a sign of attractiveness, social and even economic status. This raises the question whether skin color is currently under additional selection forces such as sexual or social selection? In an effort to answer this question, we designed a facial perception experiment in which we manipulated the skin color of several young men´s faces but left their facial shape untouched, we then asked participants from Mexico to rate how attractive, dominant, trustworthy, masculine, healthy and aggressive they found both versions of the faces.

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Why is it important?

Our findings show experimental evidence to support the hypothesis that skin color plays a major role when judging how attractive others are. They also partially support the idea that due to the highly visible association between skin color and social status during the colonial era in Mexico and the rest of the Americas, a cultural preference emerged for light skin color and other European phenotypical traits.

Perspectives

In addition, to try to answer whether skin color is currently under additional selection forces such as sexual or social selection, this article highlights the psychological basis underlying one of the oldest social problems in Mexico: racism and colorism. Here we show experimental evidence that the mexican population make judgments based on skin color and that there´s a preference for light skin color. I hope this study could help or be considered in the decision making process of policies against these problems.

Jaaziel Martínez-Ramírez
Universidad Nacional Autonoma de Mexico

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This page is a summary of: Effects of facial skin pigmentation on social judgments in a Mexican population, PLoS ONE, November 2023, PLOS,
DOI: 10.1371/journal.pone.0279858.
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