"Erection is much quicker in pre-adolescent boys than in adults, although the speed with which climax is reached in preadolescent males varies considerably in different boys(Table 32), just as it does in adults. There are two-tear olds who come to climax in less than 10 seconds, and there are two-year olds who may take 10 or 20 minutes, or more. There is a similar range among pre-adolescent of every other age. The mean time required to reach climax was almost exactly 3 minutes, and the median time was under 2 minutes. From earliest infancy until the middle twenties there is no effect of age on this point, although beyond that older males slow up in speed of response (Chapter 6)."