RecruitingBehavioural interventionMeasuring Impact of Computer Gaming on Arm Use in Rett SyndromeUsing a tele-research approach, we will recruit, enroll, guide and support carers and participants to engage in computer based activities (modified virtual reality) with the primary outcome of reducing stereotypies and increasing independent arm and hand use and secondary outcome of improving quality of living. Because of our virtual approach, we are able to recruit from multiple countries and all states and territories of the USA.