What is the term for when too many choices results in inability to decide? A common problem is that when offered too many choices, consumers give up and make no choice. Too many options results in no sale where fewer options might have resulted in more sales. It's like the cognitive load of so many choices makes the decision impossible.

I've heard it called Decision Paralysis or "Analysis Paralysis" but these terms don't seem to have a root in cognitive science. Is there a formal or generally accepted term for this phenomenon?
It is "paradox of choice". See these resources:


The paradox of choice: why more is less By Barry Schwartz (Google Books)
Excerpts from the above book by Barry Schwartz (.doc format)
Positive Psychology in Practice chapter 6 Doing Better but Feeling Worse:
The Paradox of Choice by Barry Schwartz and Andrew Ward (.pdf format)


I actually haven't been able to find anything in my search just now, but I remember some claims about a year ago that recent experiments had suggested that the original results were somewhat over-blown.