Answered by Steve, Hiring Expert at Caterpillar Inc., on Friday, February 6, 2015
There are two ultimate goals an interviewer is wanting to gain from an interview - One, gaining a deeper understanding of your knowledge, skills, and abilities in a particular area and two, obtaining an understanding of how you will fit within the culture of their company. As an interviewer, if after the interview, I feel confident about the candidate in these two areas, then yes, I would potentially make a job offer to them. That does not mean, however, that how you perform in the interview does not matter. Most companies now use behavioral based interviews on which the interviewee is measured in some way. The idea of these interviews is that your past performance will predict your future behavior. If you provide strong responses to questions, you will do fine in these interviews. Therefore, it is very important that you prepare for an interview. Research interview questions on the internet and prepare yourself for what type of responses you will give.
A good interviewer will work hard to make the interviewee comfortable and relaxed in the interview. This is the best way to get meaningful responses from them. If you are prepared and the interviewer helps you to relax, then your anxiety about the interview should subside and you will perform well.