It is interesting to note how quickly the "preadolescent" can respond to sexual stimulation. Kinsey tabulated the percentage of the population who could respond to the point of orgasm in less than ten seconds of sexual stimulation. No less than 6.4 per cent of preadolescents could achieve orgasm in less than ten seconds of sexual stimulation. And a quarter of all those tested could manage orgasm in less than one minute. Kinsey notes that erection is much quicker in preadolescent boys than in adults; and some two-year-olds come to climax in less than ten seconds.