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The 9 Things People Decide Within Seconds of Meeting You Psychologists call it 'thin slicing.'

By Drake Baer

This story originally appeared on Business Insider

Shutterstock | Enhanced by Entrepreneur

Psychologists call it "thin slicing."

Within moments of meeting people, you decide all sorts of things about them, from status to intelligence to promiscuity.

Here are nine of those instant decisions people make:

1. If you're trustworthy

People decide on your trustworthiness in a tenth of a second.

Princeton researchers found this out by giving one group of university students 100 milliseconds to rate the attractiveness, competence, likeability, aggressiveness, and trustworthiness of actors' faces.

Members of another group were able to take as long as they wanted. While other traits differed depending on time spent looking, trustworthiness was basically the same.

2. If you're high-status

A Dutch study found that people wearing name-brand clothes — Lacoste and Tommy Hilfiger, to be precise — were seen as higher status than folks wearing non-designer clothes.

"Perceptions did not differ on any of the other dimensions that might affect the outcome of social interactions," the authors wrote. "There were no differences in perceived attractiveness, kindness, and trustworthiness."

Just status.

3. If you're straight or gay

People can read a man's sexual orientation in a twentieth of a second — the minimum amount of time it takes to consciously recognize a face.

"The rapid and accurate perception of male sexual orientation may be just another symptom of a fast and efficient cognitive mechanism for perceiving the characteristics of others," wrote study authors Nicholas O. Rule and Nalini Ambady.

4. If you're smart

A 2007 study led by Loyola Marymount University professor Nora A. Murphy found that looking your conversation partner in the eye was huge for your perceived smartness.

"Looking while speaking was a key behavior," she wrote. "It significantly correlated with IQ, was successfully manipulated by impression-managing targets, and contributed to higher perceived intelligence ratings."

Wearing thick glasses and speaking expressively helps, too.

5. If you're promiscuous

A British study found that women with visible tattoos were perceived as less attractive, heavier drinkers, and more promiscuous than females without any ink — which owes to stereotypes about women with tattoos.

"In Britain, at least, tattooing among women is often associated with 'ladette' culture, the female equivalent of 'lad' culture, which typically involves a proclivity for alcoholic beverages, sports, fast cars, and a plethora of men's magazines," the authors wrote.

6. If you're dominant

Bald isn't just beautiful; it's powerful.

A University of Pennsylvania study found that "men with shaved heads were rated as more dominant than similar men with full heads of hair," and that "men whose hair was digitally removed were perceived as more dominant, taller, and stronger than their authentic selves."

So if it's starting to go, shave it off.

7. If you're successful

If you want to look successful, get it tailored.

In a British-Turkish study, participants looked at photos of men in tailored versus off-the-peg suits for just five seconds, with the guys in tailored suits rated as more successful.

"On the evidence of this study it appears men may be advised to purchase clothing that is well-tailored, as it can positively enhance the image they communicate to others," the authors wrote.

8. If you're on your way to a promotion

It's not just status — it's earnings potential, too.

In a 2011 Canadian study, university students were shown photos of male models dressed in either business or casual attire. They were then asked questions about how that guy would perform in a variety of jobs.

The results were stark: Not only were the crisply dressed dudes expected to make more money, they were expected to get promoted more rapidly.

9. If you're adventurous

People don't just read into who you are from your appearance, but also from the way you move.

In a Durham University study, students were shown video clips of 26 other students walking — some with looser gaits, some tighter.

Just a few steps were needed to give a sense of personality. Students equated looser gaits with extroversion and adventurousness, while the more clipped walkers were seen as neurotic.

Drake Baer reports on strategy, leadership, and organizational psychology at Business Insider. He is the co-author of Everything Connects: How to Transform and Lead in the Age of Creativity, Innovation, and Sustainability. Before joining BI, Drake was a contributing writer at Fast Company. Before that, he spent years exploring the world. 

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