性行為的基本類型

手交（manual intercourse）在此被定義為涉及一個人的性器官與另一個人的手之間的性接觸。

在較為過時的婚姻指南中，手交常常被描述成“愛撫”或發展到性交的“前戲”。人們認為為使女性達到完全的性喚起，必需要有對女性性器官的深度的手刺激；所以，對於男性來說，為了愉悅女性性伴，人們勸告他們把手刺激作為一種常規的習慣。遺憾的是，許多男性想當然地以為這是“前戲”，僅僅把它當作讓男人感到討厭的額外負擔。此外，因為一些男性對於女性的性反應知之甚少，他們對女性的陰蒂刺激過度，以致於達到疼痛甚于愉悅的程度。另一方面，女性常常對於觸摸男性的性器官根本上感到勉為其難。簡而言之，人們絕少把手交本身看作一種相互可分享的性體驗。

不過，人們現在在性態度方面總體上似乎正在發生改變。許多男女現在會相互坦誠地告訴對方自己喜歡什麼樣的性交方式，也會相互坦誠地告訴對方自己更願意嘗試進行性交。因而，他們開始認識到了性交合（coitus）絕不是達到性滿足的唯一途徑。的確，他們認為通過對彼此的身體進行單純的觸摸、撫摸和按摩，也能夠給予和得到極度的性快樂。此外，現代性治療已經發現，手交的相互愉悅過程可以觸發長期受到抑制的性反應，並由此有助於克服男女的性功能問題（sexual inadequacy）[1] （參見第五講）。

2. Heterosexual Intercourse

Manual Intercourse

Manual intercourse is here defined as involving sexual contact between the sex organs of one person and the hand(s) of another.
In older marital guides, this kind of sexual intercourse was often described as "petting" or as a "foreplay" to coitus. Intensive manual stimulation of a woman's sex organs was considered necessary for her complete arousal, and men were therefore admonished to make it a regular habit in order to please their female partners. Unfortunately, many men came to think of this "foreplay" as just another unpleasant male duty. Furthermore, since they knew little about the female sexual response, some of them overstimulated the female clitoris to the point where they caused more pain than pleasure. Women, on the other hand, were often reluctant to touch the male sex organs at all. In short, manual intercourse was rarely seen as a mutually enjoyable experience in its own right.
Today, however, a general change in sexual attitudes seems to be taking place. Many men and women now frankly tell each other what they like sexually, and they are much more willing to experiment. Thus, they begin to realize that coitus is by no means the only road to sexual satisfaction. Indeed, they may find that they can give and receive great pleasure by simply touching, stroking, and massaging each other's bodies. Moreover, modern sex therapists have discovered that such mutual pleasuring can unblock long inhibited sexual responses and thus help overcome male and female sexual inadequacies (see Course 5).