Restricted, repetitive behaviors and interests (RRBIs) occur commonly in young children in the course of typical development, but too frequent or persistent RRBIs have been linked to a variety of psychosocial and neurodevelopmental disorders. Unfortunately, a lack of psychometrically sound, feasible instruments stymies RRBI study and intervention in early childhood. Therefore, this study validated an extant RRBI measure (i.e., Repetitive Behavior Scale for Early Childhood; RBS-EC) for predominately neurotypical community children ages 2–7 years via an MTurk survey of 300 caregivers. Confirmatory factor analyses best supported a 4-factor model for the RBS-EC (i.e., repetitive motor, rituals and routines, restricted interests, self-directed behaviors). RBS-EC scores varied significantly with age and gender; namely, RRBIs were typically (1) less frequent but more problematic with older versus younger children and (2) more frequent and problematic with boys versus girls. Findings extend the RBS-EC’s utility in RRBI assessment and treatment during early childhood.

受限、重复的行为和兴趣 (RRBI) 通常发生在典型发育过程中的幼儿中，但过于频繁或持续的 RRBI 与各种心理社会和神经发育障碍有关。不幸的是，缺乏心理测量学上可靠、可行的工具阻碍了 RRBI 的研究和儿童早期的干预。因此，本研究通过对 300 名照顾者的 MTurk 调查验证了现有的 RRBI 测量（即幼儿重复行为量表；RBS-EC），用于 2-7 岁的主要神经典型社区儿童。验证性因素分析最能支持 RBS-EC 的 4 因素模型（即重复性运动、仪式和惯例、有限的兴趣、自我导向的行为）。RBS-EC 分数随年龄和性别而显着变化；即，RRBI 通常 (1) 较年长的儿童与年幼的儿童相比频率较低但问题较多，以及 (2) 男孩与女孩的频率较高且问题较多。研究结果扩展了 RBS-EC 在儿童早期 RRBI 评估和治疗中的效用。