For Deleuze, insofar as desire is a lack it is reducible to the "Look".Finally, after Deleuze, René Girard included his account of sadomasochism in Things Hidden Since the Foundation of The World (1978), making the chapter on masochism a coherent part of his theory of mimetic desire. In this view of sadomasochism, the violence of the practices is an expression of a peripheral rivalry that has developed around the actual love-object. There is clearly a similarity to Deleuze, since both in the violence surrounding the memory of mimetic crisis and its avoidance, and in the resistance to affection that is focused on by Deleuze, there is an understanding of the value of the love object in terms of the processes of its valuation, acquisition and the test it imposes on the suitor. Modern psychology
There are a number of reasons commonly given for why a sadomasochist finds the practice of S&M enjoyable, and the answer is largely dependent on the individual. For some, taking on a role of compliance or helplessness offers a form of therapeutic escape; from the stresses of life, from responsibility, or from guilt. For others, being under the power of a strong, controlling presence may evoke the feelings of safety and protection associated with childhood. They likewise may derive satisfaction from earning the approval of that figure (see: Servitude (BDSM)). A sadist, on the other hand, may enjoy the feeling of power and authority that comes from playing the dominant role, or receive pleasure vicariously through the suffering of the masochist.
Secondary masochism, in other words, is the relatively casual version, more akin to a charade, and most commentators are quick to point out its contrivedness.Rejection is not desired by a primary masochist in quite the same sense as the feigned rejection occurring within a mutually consensual relationship—or even where the masochist happens to be the one having actual initiative power. In Things Hidden Since the Foundation of the World, René Girard attempts to resuscitate and reinterpret Freuds distinction of primary and secondary masochism, in connection with his own philosophy.Both Krafft-Ebing and Freud assumed that sadism in men resulted from the distortion of the aggressive component of the male sexual instinct. Masochism in men, however, was seen as a more significant aberration, contrary to the nature of male sexuality. Freud doubted that masochism in men was ever a primary tendency, and speculated that it may exist only as a transformation of sadism. Sadomasochism in women received comparatively little discussion, as it was believed that it occurred primarily in men. Both also assumed that masochism was so inherent to female sexuality that it would be difficult to distinguish as a separate inclination. Havelock Ellis, in Studies in the Psychology of Sex, argued that there is no clear distinction between the aspects of sadism and masochism, and that they may be regarded as complementary emotional states. He also made the important point that sadomasochism is concerned only with pain in regard to sexual pleasure, and not in regard to cruelty, as Freud had suggested.