Longitudinal growth modeling was utilized to examine adaptive behavior over eight years across the three time points (i.e., ages 2-10). Seventy-six parents completed the Vineland Adaptive Behavior Scales interviews of adaptive behavior. Child participants completed standardized developmental testing and an executive function task in toddlerhood and the Autism Diagnostic Observation Schedule across all time points. Growth models were specified for communication, daily living skills, and socialization domains of adaptive behavior. Mental age in toddlerhood was a significant predictor of trajectories of communication, daily living skills, and socialization. Executive function and autism severity were significant predictors of socialization. Findings suggest executive function as a potential target for promoting the growth of adaptive behavior skills in addition to autism symptomology.

中文翻译：

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自闭症谱系障碍从幼儿期到童年中期的适应行为的发展轨迹。


利用纵向生长模型来检查八年中三个时间点（即 2-10 岁）的适应性行为。七十六位家长完成了瓦恩兰适应性行为量表的适应性行为访谈。儿童参与者在幼儿期完成了标准化发育测试和执行功能任务，并在所有时间点完成了自闭症诊断观察计划。成长模型专门针对沟通、日常生活技能和适应性行为的社交领域。幼儿时期的心理年龄是沟通、日常生活技能和社交轨迹的重要预测因素。执行功能和自闭症严重程度是社会化的重要预测因素。研究结果表明，除了自闭症症状之外，执行功能也是促进适应性行为技能发展的潜在目标。