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Evaluation Tools Developed for Rett Syndrome

Rett syndrome (RTT) is a complex neurodevelopmental X-linked disorder associated with severe functional impairments and multiple comorbidities. There is wide variation in the clinical presentation, and because of its unique characteristics, several evaluation tools of clinical severity, behavior, and functional motor abilities have been proposed specifically for it.

Associations between genotype, phenotype and behaviours measured by the Rett syndrome behaviour questionnaire in Rett syndrome

Rett syndrome (RTT) is a rare neurodevelopmental disorder with developmental impairments, comorbidities, and abnormal behaviours such as hand stereotypies and emotional features. The Rett Syndrome Behaviour Questionnaire (RSBQ) was developed to describe the behavioural and emotional features of RTT.

"What about us?"- the drawbacks of current bruxism assessment criteria in evaluating vulnerable groups

Jenny Helen Kingsley Downs Leonard Wong BApplSci (physio) MSc PhD MBChB MPH MBBS, MPH, MMedStat Head, Child Disability Principal Research Fellow

Burden of illness in Rett syndrome: initial evaluation of a disorder-specific caregiver survey

Rett syndrome (RTT) is a severe X-linked neurodevelopmental disorder associated with multiple neurologic impairments. Previous studies have shown challenges to the quality of life of individuals with RTT and their caregivers. However, instruments applied to quantify disease burden have not adequately captured the impact of these impairments on affected individuals and their families. Consequently, an international collaboration of stakeholders aimed at evaluating Burden of Illness in RTT was organized.

Rett Syndrome Behaviour Questionnaire in Children and Adults With Rett Syndrome: Psychometric Characterization and Revised Factor Structure

Rett syndrome (RTT) is a severe neurodevelopmental disorder associated with multiple neurobehavioral abnormalities. The Rett Syndrome Behaviour Questionnaire (RSBQ) was developed for pediatric RTT observational studies. Because its application has expanded to adult and interventional studies, we evaluated the RSBQ's psychometric properties in six pediatric (n = 323) and five adult (n = 309) datasets.

Publications

The list of The Siblings Project publications

2025 International Siblings Day

National Siblings Day is a holiday dedicated to celebrating the bond between siblings. It is a time to recognize the importance of siblings, whether they are brothers, sisters, step-siblings, or even those who feel like family.

Teen Talk Study

In 2024–2025, we listened to 40 siblings from across Australia share their experiences of family life and social connection. Most had a brother or sister with developmental disability, and others did not. Together, they offered open and thoughtful reflections on roles and responsibilities at home, friendships, fam