Here is a really cool (or possibly scary) thing: we can judge certain characteristics of people rather accurately based solely on our brief first impressions. This is by no means a new idea. College students have been able to predict the ratings of professors from 10 second video clips of their lectures (without sound, no less). A new study actually suggests that some of our first impressions, such as the trustworthyness, kindness, and compassion of others, may have a basis in our DNA.
Have a look at the original article from Science Daily:
There’s definitely something to be said for first impressions. New research suggests it can take just 20 seconds to detect whether a stranger is genetically inclined to being trustworthy, kind or compassionate. The findings reinforce that healthy humans are wired to recognize strangers who may help them out in a tough situation. They also pave the way for genetic therapies for people who are not innately sympathetic, researchers said.