I think it's still important to look for emotions, interest and sociability. You just have to be more subtle about it with introverts or people nervous in interviews.

With regard to being careful what you select for, I'd have to agree with sfink that personality is a big factor. If someone's personality is going to impact negatively on the workplace then you must consider that. Regardless of technical or other skills.

I'm an introvert but I can usually put on the extrovert suit for job interviews. I'd probably play with the interactive screen for a bit then tell them why it's still no good.

Caring for Your Introvert
Shy people are anxious or frightened or self-excoriating in social settings; introverts generally are not.
That's his take at least (and mine).