What other things do I need to know about mastering the interview?

In addition to empathy, there are four other intangible fundamentals to a successful interview. These intangibles will influence the way your personality is perceived, and will affect the degree of rapport, or personal chemistry you'll share with the employer.

1. Enthusiasm -- Leave no doubt as to your level of interest in the job. You may think it's unnecessary to do this, but employers often choose the more enthusiastic candidate in the case of a two-way tie. Besides, it's best to keep your options open -- wouldn't you rather be in a position to turn down an offer, than have a prospective job evaporate from your grasp by giving a lethargic interview?
2. Technical interest -- Employers look for people who love what they do, and get excited by the prospect of tearing into the nitty-gritty of the job.