Her studies contributed to a change in the attitudes of the psychological community toward homosexuality and to the American Psychiatric Association's decision to remove homosexuality from its handbook of disorders in 1973. This in turn helped change the attitude of society at large. One element that did stay in the handbook of disorders was ego-dystonic homosexuality. Experts became concerned about using psychoanalytic approaches and behavior modification conversion therapy. In 1987 ego-dystonic homosexuality was also eliminated from the handbook when it was determined that psychological therapies could not cure homosexuality.