The intersection of Scientology and abortion has a controversial history which began with Scientology founder L. Ron Hubbard's discussion of abortion in his 1950 book Dianetics: The Modern Science of Mental Health. Hubbard wrote in Dianetics that abortion and attempts at abortion could cause trauma to the fetus and to the mother in both spiritual and physical ways. Scientologists came to believe that attempted abortions could cause traumatic experiences felt by the fetus, which would later be remembered as memories referred to in Scientology as "engrams". In the Scientology technique called Auditing, Scientologists are frequently queried regarding their sexual feelings and behaviors. These questions about Scientologists' sexual behavior are often posed to members during "security checks",