The Homosexual Matrix is a book by American psychologist Clarence Arthur Tripp, in which the author discusses the biological and sociological implications of homosexuality, and also attempts to explain heterosexuality and bisexuality. The book was first published in 1975 by McGraw-Hill Book Company; it was republished in a revised edition in 1987. Based on his review of the evidence, Tripp argues that people do not become homosexual due to factors such as hormone levels, fear of the opposite sex, or the influence of dominant and close-binding mothers, and that the amount of attention fathers give to their sons has no effect on the development of homosexuality. He criticizes Sigmund Freud and argues that psychoanalytic theories of the development of homosexuality are untenable and based on