Proponents of the technique believed that patients who had not been taught reading, writing or mathematics were capable of writing down complex thoughts and solving multiplication problems. Patients have also been claimed to write books and poetry, advocate for better treatment of people with disabilities, express a desire to get married, have sexual relations, decide important medical issues, and, in some cases, report abuses allegedly occurring in their homes. According to psychologist Adrienne Perry, "The adult or child with autism is made a 'screen' for a facilitator's hostilities, hopes, beliefs or suspicions".