Kat and Jo published their paper An observational study of social interaction skills and behaviors in Cornelia de Lange, fragile X and Ruinstein-Taybi syndromes in Journal of Autism and Developmental Disorders. This paper described the profile of strengths and weaknesses in behaviours indicative of social interaction skills, social enjoyment, social motivation and social discomfort to characterise sociability in genetic syndromes and explore whether these skills are associated with age and autistic traits.