Wider-faced politicians seen as more corrupt

New research offers a tip for politicians who don’t want to be seen as corrupt: don’t get a big head.

In a study published this week in Psychological Science, researchers at Caltech showed people photos of various politicians and asked them to rate how corruptible each seemed. The volunteers were able to guess with significant accuracy which politicians were corrupt and which weren’t.

The common denominator between the politicians who seemed guilty? A wide face, a trait that past research has linked to aggressive behaviour in men.

In the first part of the study, 100 volunteers were shown photos of 72 politicians, all Caucasian males. All images were cropped and rendered black and white. The volunteers rated each politician for how corruptible, dishonest, selfish, trustworthy, and generous they seemed.

The volunteers were able to predict the corrupt politicians about 70 per cent of the time just from looking at the photos.

In the second part of the study, volunteers evaluated photos of 80 politicians, half corrupt and half clean, who had been elected to state and local positions in California. The researchers excluded responses from participants who recognised officials, though there was only one participant who recognised a politician by their face.

Like the first study, the participants correctly identified the corrupt politicians about 70 per cent of the time.

A third part of the study asked participants to evaluate the first set of 72 politicians for traits like corruptibility, aggressiveness, masculinity, competence, and ambitiousness. The volunteers were only able to predict with regular accuracy corruptibility-related traits in this section of the study.

In the last sections of the study, the researchers tried to identify why certain politicians seemed more corrupt than others by measuring and categorising their facial characteristics, including cheekbone size, distance between the eyes, nose length, and face width. After comparing the prior responses to the facial structure data, the results showed that politicians with wider faces were more likely to be considered corrupt.

To be sure, the researchers compiled 150 photos of politicians and created two digitally manipulated versions of each: one with a narrower face, one with a wider face. The 450 real and digitally altered photos were then shown in random order to 100 volunteers, only one of whom reported realising the face width of some politicians had been manipulated. That volunteer was excluded.

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