Personality is a very important aspect of human begin. From the moment you meet someone for the first time, you quickly want to assess who the person is and what they represent.The human brain is hardwired to judge. This survival mechanism makes it very hard to meet someone without evaluating and interpreting their behavior.

We are so good at judging other people’s personalities based on small things that,subjects accurately predicted people’s personality traits, such as extroversion/introversion, emotional stability, agreeableness, conscientiousness, and openness, simply by looking at pictures of the shoes they wore.
While we tend to think that our judgments are based on the content of conversations and other obvious behaviors, the research says otherwise. In fact, the majority of our judgments are focused on smaller, subtler things, such as handshakes and body language. We often form complete opinions about people based solely on these behaviors.

How you treat waiters and receptionists.

How you treat support staff is so indicative of your makeup that it has become a common interview tactic. By gauging how you interact with support staff on your way in and out of the building, interviewers get a sense for how you treat people in general. Most people act the part when they’re speaking to the hiring manager or other “important” people, but some will pull a Jekyll and Hyde act the moment they walk out the door, treating others with disdain or indifference. Business lunches are another place this comes to light.
How you treat waiters and receptionist

How often you check your phone.

There’s nothing more frustrating than someone pulling out their phone mid-conversation. Doing so conveys a lack of respect, attention, listening skills, and willpower. Unless it’s an emergency, it’s wise to keep your phone holstered.Pulling out your phone during a conversation lowers both the quality and quantity of face-to-face interactions.
How often you check your phone.

Repetitive, nervous habits.
Touching your nails or face or picking at your skin typically indicates that you’re nervous, overwhelmed, and not in control.

Repetitive, nervous habits.

How long you take to ask questions.
The amount of time someone allows to pass before they take an interest in you is a strong personality indicator. People who only talk about themselves tend to be loud, self-absorbed “takers.” People who only ask questions and share little about themselves are usually quiet, humble “givers.”

Your handshake. It’s common for people to associate a weak handshake with a lack of confidence and an overall lackadaisical attitude.Specifically, the study found that a firm handshake equates with being less shy, less neurotic, and more extroverted.
Your handshake.

Handwriting.

There are all manner of false stereotypes attempting to relate your handwriting to your personality. For example, people believe that how hard you press down on the paper relates to how uptight you are, the slant of your writing indicates introversion or extroversion, and the neatness/sloppiness of your writing reveals organizational tendencies.
Eye contact.
The key to eye contact is balance. While it’s important to maintain eye contact, doing so 100% of the time is perceived as aggressive and creepy. At the same time, if you only maintain eye contact for a small portion of the conversation, you’ll come across as disinterested, shy, or embarrassed. Studies show that maintaining eye contact for roughly 60% of a conversation strikes the right balance and makes you come across as interested, friendly, and trustworthy.
Eye contact.

Bringing It All Together

Sometimes the little things in life make a big difference. It’s good to be ready for them, so that you can make a strong impression.