Non-consensual intimate and sexual contact, such as frotteurism and groping, are unacceptable. Some psychologists consider toucherism a manifestation of frotteurism, while others distinguish the two. Clifford Allen later coined "frotteurism" in his 1969 textbook of sexual disorders. The allegations against Boulton included non-consensual groping and frotteurism. In clinical psychology, the desire is called frotteurism.