2026-11-042026-11-042026COSTA, Marlisom Messias Passos da. Relações entre funções executivas, desempenho funcional e funcionamento adaptativo em crianças e adolescentes com transtorno do espectro autista com e sem transtorno do déficit de atenção e hiperatividade. Orientador: Elson Ferreira Costa. 2026. 88 f. Dissertação (Programa de Pós Graduação em Reabilitação e Desempenho Funcional) - Centro de Ciências Biológicas e da Saúde, Universidade do Estado do Pará, Belém, 2026.https://portaldaposgraduacao.uepa.br/handle/riuepa/418AbertoDistúrbio da falta de atenção com hiperatividadeDesempenhoTranstorno do Espectro AutistaTerapia ocupacionalAttention deficit hyperactivity disorderPerformanceAutism spectrum disorderOccupational therapyRelações entre funções executivas, desempenho funcional e funcionamento adaptativo em crianças e adolescentes com transtorno do espectro autista com e sem transtorno do déficit de atenção e hiperatividadeRelationships between executive functions, functional performance, and adaptive functioning in children and adolescents with autism spectrum disorder with and without attention deficit hyperactivity disorder.DissertaçãoCiências BiológicasExecutive functions play a fundamental role in the organization of goal-directed behavior and have been consistently associated with functional performance and adaptive functioning in individuals with Autism Spectrum Disorder (ASD). However, the mechanisms underlying this relationship remain poorly understood. This study aimed to investigate the relationship among executive functions, functional performance, and adaptive functioning in children and adolescents with ASD, with and without Attention-Deficit/Hyperactivity Disorder (ADHD), as well as to examine the mediating role of functional performance in this association. This was an observational, analytical, cross-sectional study with a quantitative approach. The following instruments were administered: the Child Executive Functioning Inventory (CHEXI), the Adaptive Functioning Scale (EFA), and the Functional Independence Measure for Children (Wee FIM). Data were analyzed using comparative and correlational analyses, hierarchical linear regression, and mediation analysis, controlling for age and the presence of ADHD. The results demonstrated significant associations among executive functions, functional performance, and adaptive functioning. Participants with comorbid ASD and ADHD exhibited greater executive dysfunction and poorer adaptive functioning, whereas those requiring higher levels of support showed greater impairments across all three constructs. Hierarchical regression indicated that functional performance remained an independent predictor of adaptive functioning, and mediation analysis demonstrated that it mediated the relationship between executive functions and adaptive functioning. These findings indicate that executive functions influence adaptive functioning primarily through their impact on functional independence in everyday activities. The results advance the understanding of functioning in ASD and provide evidence to support assessment and intervention in pediatric neurorehabilitation.PPGREAB - Avaliação e intervenção terapêutica nos sistemas neuromuscular