“…The questionnaire consisted of 17 headings (age, grade of severity, period during which the answerer made their observations, related profession, purposeful hand movements, types of stereotypical hand movements, increased stereotypical hand movements, decreased stereotypical hand movements, interventions that reduced stereotypic hand movements, handedness, skin injuries, joint contracture, use of upper extremity splints, visual function, ophthalmic findings, use of visual function in rehabilitation or education, and interests), tailored by the authors for individuals with Rett syndrome. Answers to questions concerning age, grade of severity (Yokochi classification 9 ) ) and interests were analyzed in this study. Multiple answers were allowed and “interests” were based on free descriptions, not chosen from a list of possible answers.…”