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This study aims to explore the relationship between developmental ability, autism and adaptive skills in preschoolers. Adaptive function was assessed in 152 preschoolers with autism, with and without developmental delay, and without autism, with and without developmental delay. Their overall adaptive function, measured by the general adaptive composite on the Adaptive Behaviour Assessment System, was closely correlated to developmental ability as measured by the general quotient on the Griffith Mental Development Scales. Children with autism performed significantly less well on both scales. Domain scores discriminated between children with and without autism, with poorer performance on both the social and practical domain scores for children with autism, even when controlling for the effects of development. Children with average development, both with and without autism, had lower adaptive skills than expected for their developmental level. The importance of considering domain scores as well as the general adaptive composite when determining support needs is emphasised.

Aim: To explore the association between social disadvantage and developmental diagnoses in pre-school children.Methods: Between 2012 and 2015, 845 pre-school children were assessed by the Child Assessment Team at Campbelltown Hospital. A social worker interviewed 469 families and these children were eligible for inclusion in the study. Autism spectrum disorder (ASD) was confirmed in 290 children. Of those without ASD, 72 did not have global developmental delay (GDD) and were excluded from the study. The remaining 107 children with GDD were used as the comparison group. Social risk factors in the two groups were compared using χ 2 tests. Variables with statistical significance were then entered into a logistic regression.Results: After logistic regression, children with ASD were more likely to be male (odds ratio (OR) 3.1, 95% CI 0.195-0.529; P < 0.001) and their parents were more likely to have a clinically significant stress score (OR 1.3, 95% CI 0.334-0.992; P = 0.047). Children with GDD were more likely to live in a disadvantaged suburb (OR 1.7, 95% CI 1.042-2.940; P = 0.034), more likely to have a sole parent (OR 1.8, 95% CI 1.062-3.082; P = 0.029) and much more likely to have had involvement with child protection services (OR 3.9, 95% CI 2.044-7.416; P < 0.001).Conclusions: Children with GDD without autism were more likely to be disadvantaged and to have had contact with child protection services than children with ASD. This has implications for the assessment, early intervention and support services for children with disabilities and their families. [ABSTRACT FROM AUTHOR]