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性行为的基本类型
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2.
异性性交:
生殖器性交
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性交合
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一对正开始性交合的夫妇
自古希腊花瓶画，
柏林Staatl博物馆（SPK）
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Couple beginning coitus.
After an ancient Greek vase painting,
Staatl. Museen zu Berlin, SPK |
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性交合的技巧 7
人们惯常认为一些性交合方法尤其有效，因为它们可以让男方用阴茎刺激女方的阴蒂。出于同样的原因，人们也认为其它的一些方法则是次要的，因为它们让阴蒂未得到完全的刺激。现代性学研究已经表明这两种假设都是错误的。毕竟，随着不断增强的性刺激，阴蒂缩回到阴蒂包皮内，因而难以受到任何的直接刺激。不过，它会随着阴蒂包皮的牵动而间接受到刺激。当阴茎在阴道内前后抽动的时候，附着于阴蒂的小阴唇[1]会受到牵拉，进而导致阴蒂包皮的牵动。这种间接的刺激几乎总是有效的。无论阴茎插入的方向或角度如何，这些都无关紧要。
不过，有一种让许多女性都感到特别满意的方法，因为这种方法让她们几乎完全控制着性交合的动作：骑跨在被动仰卧的男子身上。这种方法在古希腊人和古罗马人中间也非常流行，事实上曾被他们认为是“正常的”体位。当今，这种方法常常被性治疗师所推荐，因为它似乎有助于男女双方克服性兴奋不足。（参见
“性功能障碍及其治疗”。）
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Basic Types of Sexual Behavior |
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2. Heterosexual Intercourse: Genital Intercourse |
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Coitus |
Techniques of Coitus 7
It used to be believed that certain coital approaches were especially effective because they made it possible for a man to stimulate a woman's clitoris with his penis. By the same token, certain other approaches were considered inferior because they allowed the penis to leave the clitoris completely unstimulated. Modern sex research has shown that both assumptions are false. After all, with mounting sexual excitement the clitoris withdraws under its hood and thus becomes inaccessible to any direct stimulation. However, it is stimulated indirectly by the movements of this hood which are caused by the pushing and pulling of the attached minor lips as the penis moves back and forth inside the vagina. This indirect stimulation is almost always assured. It does not matter all that much from which direction or at what angle the penis is inserted.
However, there is one approach that many women find particularly satisfying, because it gives them almost complete control over the coital movements: straddling the man who lies passively on his back. This approach was also very popular among the ancient Greeks and Romans and was, in fact, considered "normal" by them. Today, it is often recommended by sex therapists because it seems to help both men and women to overcome sexual inadequacies (see "Sexual Dysfunctions and their Treatment") |
