Deep Question.

I watched a documentary a few days ago, pertaining to time perception, and a man with a stopwatch stopped random people on the side of the road and asked them to guess how long a minute is. Young people (I think <30 y.o.) called the minute at under 60 seconds, while the older ones did the opposite. Thus proving age and time perception have a direct link.

Richard Feynman timed himself counting off a minute under all kinds of conditions and found that he reliably counted faster when he had a fever, amongst other interesting things. Happen to recall the name of this documentary you saw?