 Michael Bailey speculated that autogynephilia may be genetic.Blanchard's theory has gained support from J. Michael Bailey, Anne Lawrence, James Cantor, and others who argue that there are significant differences between the two groups, including sexuality, age of transition, ethnicity, IQ, fetishism, and quality of adjustment.However, the theory has been criticized in papers from Veale, Nuttbrock, Moser, and others who argue that it is poorly representative of MtF transsexuals and non-instructive, and that the experiments behind it are poorly controlled and/or contradicted by other data.