Interviewing is a bit like dating: people are on their best behavior, sizing each other up while minimizing risk. At the least, the goal is another interview (second date); at best, a job offer (a longer-term relationship).
• Candidates want to appear competent and confident. Employers present their company (organization, division, department) in the best possible light.
• Candidates are concerned about what questions might be asked and answering in the “right” way, or at least not losing the chance to move on in the process. Employers need capable, motivated employees.