 According to ASAN, research suggests that autism has always existed at its current levels in the population.In 2018, ASAN published an open letter to American Speech–Language–Hearing Association opposing their position statement that facilitated communication (FC) and rapid prompting method (RPM) are scientifically discredited, claiming that more research on those methods is worthwhile.ASAN also officially supports Augmentative and alternative communication in a position statement, and lists Amy Sequenzia and Ben McGann, members of its Board of Trustees who communicate by FC.