Final answer:
It's difficult to answer who developed the '4 corners of eroticism' as it is not a widely recognized theory. Nevertheless, Alfred Kinsey, Sigmund Freud, and Vatsyayana have each contributed significantly to the understanding of human sexuality and eroticism through the Kinsey scale, psychosexual stages, and the Kama Sutra, respectively.
Step-by-step explanation:
The question 'Who developed the 4 corners of eroticism?' does not specify a widely recognized concept or theory explicitly named '4 corners of eroticism', making it difficult to provide a factual answer. However, in regards to explorations of human sexuality and eroticism, several influential figures have made significant contributions to the field. For instance, pioneering sex researcher Alfred Kinsey developed the well-known Kinsey scale, which conceptualizes sexual orientation on a continuum rather than a binary. Kinsey's seminal work, 'Sexual behavior in the human male' published in 1948, was instrumental in advancing the understanding of human sexual behavior. In addition, the Kama Sutra, a classic text on human sexuality and eroticism, provides guidance on the nature of love, sexual behavior, and family life. However, it's important to note that the Kama Sutra was authored by Vatsyayana in the second or third century BCE and does not directly pertain to the '4 corners of eroticism' concept. Other researchers, like Masters and Johnson, also made significant contributions by studying physiological responses during sexual behavior. While Sigmund Freud identified different psychosexual stages, each associated with certain erogenous zones.