A German study reveals that there is no statistical difference between the "ejaculation times" of men seeking treatment for premature ejaculation and a broader sample of "normal" men [whatever that means]. They both make the finish line in the same time; one set of men just feels that it was wrong and not long enough, while the other set thinks that it was way too fast.
Premature ejaculation - A study of average ejaculation time and overview of the literature. Aktuelle Urologie, 2001, Vol 32, Iss 7, pp 435-438. N Kreutzer, F Sommer, T Klotz, U Engelmann. Sommer F, Klinikum Univ Koln, Oberarzt Klin & Poliklin Urol, Joseph Stelzmann Str 9, D-50931 Cologne, GERMAN