Faculty members in almost all the Indian institutions are getting ready to interview tens (if not hundreds) of students for a handful (or a few handfuls) of PhD slots in their departments. A recent NYTimes article urges us to be mindful of limitations of this format: The Utter Uselessness of Job Interviews by Jason Dana.
I realize there are quite a few differences between the kind of interviews Dana describes in his article and the kind we use. For example, his "experimental" interviews were (probably) unstructured, while we may be using something more structured [such as probing candidates specifically in the areas / subfields they say they are strong in]. Also, given the overwhelmingly large number of candidates compared to the number of available slots, there's usually a pre-screening exercise which relies on previous academic record, research experience, scores / ranks in entrance exams, etc.
And yet, this article reminds us some of the pitfalls of the interview process.