1.3.2 Artist and model
It is not surprising that the depiction of gender signals is a more powerful stimulus to male artistic creativity when bodily intimacy arises through a sexual pairing of artist and model. There are several examples of the powerful influence of pair bonding in the opening up of productive private avenues into the world of nature.  Notable pairings are Picasso, and his succession of marital models, and the marriage of art-photographer Alfred Steiglitz and the artist Georgia O’Keeffe.  The latter pair fed upon each other’s love to become, as individuals, two of the most significant artists to have worked in America during the twentieth century. Steiglitz’s love, his infatuation, perhaps even a touch of possessiveness, can be felt in his sexual images of O’Keeffe.  These partook of her premarital interest in discovering sexual imagery in the common place things of nature, her willingness to display her own gender signals to her husband, and Steiglitz’s skill to read his wife’s body through its gender signals. There is biological significance in the fact that his nude shots are carefully framed to exclude head and extremities.  A face carries very powerful message in its own right.  Throughout the ages, female nudes are either depicted with stylised expressionless faces or as headless torsos. 
The artistic partnership of O’Keeffe and Steiglitz went far beyond a mutual interaction through sexual imagery.   As lovers they shared an intimate and creative life that is much more difficult to describe or assess.   It is to be seen in their wide range of common subject matter and stylistic interchange.  Together, yet separately, they enjoyed the rewards of an exceptionally productive union, sometimes working side by side on identical themes- apples, landscapes, the sky and the cityscapes of New York.  Eventually, it seems that O’Keeffe’s gains owed less to the forces of sexual attraction than to intellectual fusion. She eventually admitted that at the height of their mutual creativity she began to realise that she loved the artist, perhaps as a teacher, more than the man.  The general point is that sex can heighten intellectual development although it is a phenomenon that is little understood.  Mutual reinforcement of creativity in sexual partnerships is masked by conventional expressions of male and female role-play.