Institute of Child Development, University of Minnesota, Minneapolis, MN, USA.
Department of Educational Psychology, University of Minnesota, Minneapolis, MN, USA.
Dev Psychopathol. 2020 Aug;32(3):779-789. doi: 10.1017/S0954579419001159.
Improved characterization of quantitative traits and dimensionally distributed complex behaviors during toddlerhood may improve early identification of autism spectrum disorder and related neurodevelopmental disorders. Parents of 205 community-ascertained toddlers (age: mean = 20.2, SD = 2.6 months) completed the Repetitive Behavior Scales for Early Childhood (RBS-EC) and the Video-Referenced Rating of Reciprocal Social Behavior (vrRSB), with longitudinal follow-up of behavioral assessments and/or another round of parent-report questionnaires. Criterion validity was examined both concurrently and longitudinally using the Infant Toddler Social Emotional Assessment (ITSEA) as a criterion anchor. Reciprocal social behavior as measured by the vrRSB was significantly associated with social competence as measured by the ITSEA, longitudinally and concurrently. Reciprocal social behavior was not associated with the externalizing subscale on the ITSEA, providing evidence of discriminant validity. Higher-order repetitive behaviors (restricted interests; rituals and routines) as measured by RBS-EC subscales were associated with the dysregulation and internalizing subscales of the ITSEA, longitudinally and concurrently. All RBS-EC subscales (excepting repetitive motor) were associated concurrently and longitudinally with the dysregulation subscale of the ITSEA. We report evidence of criterion-oriented and discriminant validity for the constructs/domains captured by the RBS-EC and vrRSB. These instruments may be particularly useful in characterizing dimensional variability across the typical-to-atypical continuum.
在幼儿期对定量特征和维度分布的复杂行为进行更精确的描述，可能有助于提高自闭症谱系障碍和相关神经发育障碍的早期识别能力。205 名社区确定的幼儿（年龄：平均=20.2，标准差=2.6 个月）的父母完成了《幼儿重复行为量表》（RBS-EC）和《视频参考互惠社会行为评定》（vrRSB），并对行为评估进行了纵向随访，或进行了另一轮家长报告问卷。使用《婴儿-幼儿社会情感评估》（ITSEA）作为标准锚，同时和纵向检验了效标效度。vrRSB 测量的互惠社会行为与 ITSEA 测量的社会能力显著相关，具有纵向和同时的相关性。互惠社会行为与 ITSEA 的外显子量表无关，提供了鉴别效度的证据。RBS-EC 子量表测量的高阶重复行为（受限兴趣；仪式和常规）与 ITSEA 的失调和内化子量表相关，具有纵向和同时的相关性。RBS-EC 的所有子量表（除了重复运动）均与 ITSEA 的失调子量表具有同时和纵向的相关性。我们报告了 RBS-EC 和 vrRSB 所捕捉的结构/领域的效标导向和鉴别效度的证据。这些工具可能特别有助于描述典型到异常连续体上的维度可变性。
