Are observation logs completed by parent/support worker/care giver/partner useful information for clinical trials involving participants with autism? say for example testing a drug treatment or complementary therapy. Would this be useful additional information to a questionnaire? Log to monitor events of repetitive behavior, motor stereotypies, episodes of severe anxiety, aggression, "meltdowns" etc over a time period starting some time before the trial and some time after the trial has ended. I understand that participant with autism may not like the idea of a parent/SW/caregiver/parent writing information about them. Many trials involving autistic people and their families use follow up questionnaires and ask for feedback, generally with families reporting that X is doing well.