Hello Shilpa,
I agree with those who say the interviewers behaviour affects the Candidate's decision to accept / reject the offer.
I believe the interviewer is the first and the only one person who represents his organisation and can sell the company as well as the position to the candidate . at this pont if the interviewer has to act pricy , un apporachable adn thinksd that throwing attitude means showing power then i must say such people are sadly mistaken infact if they do not have time they should ont be conducting interviews and secondly if they feel they can behave kind and friendly enough they should not be getting in to a profession like recruitment bcoz it is the hr specially the recruiters duty to make the person feel wanted , important and special in cases where the candidate is worth it.moreover even if the candidate is unfit , im sure there are kind humble and more diplomatic ways to handle the situation instead of pyschologically disturbing the candidate.
i compeltely agree as i havepersonally experienced such rude and unprofessional recruiters who force the candidates to get a negative idea of the company.