性行為的發展

這裏有一個很好的例子，有兩個男子的“性日記”詳細地記載了他們青春期的性能力，我們稱他們為Z先生和C先生。他們儘管住在歐洲不同的國家，卻有很多共同特徵：他們作為青少年，沒有機會與人發生性行為，因而他們有自娛行為作為其性釋放的唯一途徑。一旦他們成年，他們都結了婚並有了孩子。兩人也都保存了精確的日記，詳列了他們超過50年的記錄。這樣的日記極為罕見，所以他們所記載的性活動內容不能視為具有代表性。儘管如此，仍用圖表呈現如下，該圖表覆蓋了他們前20年的生活，他們的性行動檔案清晰度也不能延續到成年期。至少在這一方面，日記仍然反映出一個典型的發展過程。他們的日記也證明了另外的普通男人在十多歲裏也可能有高頻率的性反應：在15-17歲之間，他們大約每年有900次的性高潮，即每天有2-3次。（實際上，Z先生的性活動在兒童期就已經開始；這個時期恰好在佛洛伊德假定的“潛伏期”）。

從出生到20歲每年的自娛頻率：綠色曲線：Z先生；橙色曲線：C先生

Masturbation frequency per year from birth to age 20
Green: Mr. Z, Orange: Mr. C

Stages of Development: Adolescence

Sexual Response 2

A good illustration of early male sexual capacity is provided by the sexual diaries of two men, Mr. Z and Mr. C. Although living in different European countries, they have sexually much in common: As adolescents, they had no opportunity for sexual intercourse and thus were left with masturbation as their only sexual outlet. Once they reached adulthood, they both married and had children. Both also kept precise diaries, listing their sexual activities over more than five decades. Such diaries are extremely rare, and their content can therefore not be considered representative. Still, the excerpts presented here, which cover the first twenty years of their lives, document levels of performance that neither could sustain in adulthood. In this respect at least, the diaries reflect a typical development. They also document that otherwise ordinary males can be sexually highly responsive in their teens: About 900 orgasms per year, i.e. 2 - 3 orgasms per day, between the ages of 15 and 17. (Actually, Mr. Z’s activity already begins in childhood during the “latency period” postulated by Freud.)