How are first impressions determined in a job interview?

First impressions are determined by a candidates outfit, their mannerism, and their behavior. You should be dressed professional for your interview. A good idea is to look up the company's culture and dress code and dress in a similar fashion.

Interviewers will also be looking at a candidates mannerism and their body language. It's important to make eye contact and avoid any body language that makes you look closed off.