Roughly half were serving life sentences; the other half were awaiting execution.Then the researchers had a group of participants look at the photos and rate the trustworthiness of the faces pictured on a scale from 1 (not at all trustworthy) to 8 (very trustworthy).They also tended to rate people with broad faces as stronger.look at photos of men and women that had been randomly selected from two photo databases and rate the emotional state, personality traits, and criminal appearance of the people pictured.Those who were rated as less trustworthy were more likely to be sentenced to death than those who looked more trustworthy.In the second part of that study, participants looked at photos of people previously convicted of murder but subsequently exonerated, usually on the basis of DNA evidence.Red spots in the retina, the light-sensitive layer at the back of the eye, can be a sign of diabetes.When blood-sugar levels get too high, this can block the blood vessels in the retina, causing them to swell and burst.
"Facial appearance affects real-world criminal sentencing independently of actual guilt," the researchers wrote in their paper.
In a 2009 study, researchers showed participants the photos of 123 undergrads from the University of Texas at Austin in which the undergrads either were told to have a neutral expression or were allowed to pose however they wanted.
No matter which position the people took, the viewers were better than chance at judging the following: how extroverted they were, how high their self-esteem was, how religious they were, how agreeable they were, and how conscientious they were.
Within a few seconds of seeing someone — whether on a date or at the grocery store — we decide on numerous things about them, from how smart they are to how likely they are to commit a crime.
Surprisingly, our first impressions can be remarkably accurate in some instances. Here are a few of the things we determine about people based on how they look.
In 2013, a group of psychologists, neuroscientists, and computer scientists from Europe and the US had a small group of participants look at portraits of 47 white men and 83 white women and evaluate them first on their height and next on their ability to lead.