Primary reflexes are highly stereotypical, automatic movements comprising much of the motor repertoire of newborns. The current study examined rates of presence of five primary reflexes (snout, visual rooting, sucking, tactile rooting, and grasp) and variables predictive of their persistence for children with ASD (n = 35), developmental disability…

Underrepresentation of socioeconomically, culturally, and/or linguistically diverse (SCLD) children with neurodevelopmental disorders (NDD) and their families has become a focal point for researchers. This systematic review aimed to identify researchers' strategies for recruiting and retaining SCLD families of children with NDD, published between…

Recently it has been proposed that impairments related to autism spectrum disorder (ASD) may reflect a more fundamental disruption in time perception. Here, we examined whether in utero exposure to valproic acid (VPA) can generate specific behavioral deficits related to ASD and time perception. Pups from control and VPA groups were tested using…

Activation refers to patients' belief, knowledge, ability, and persistence to manage care. The concept is adapted to parent activation in developmental disorders. This study examined the psychometrics of the Parent Activation Measure for Developmental Disabilities (PAM-DD) and factors related to parent activation in ASD. Data from 658 caregivers…

The present study evaluated the hypothesis that the strength of the relationship between executive function (EF) and repetitive behaviors and restricted interests (RBRI) symptomatology is moderated by the degree to which concurrent demands are placed on multiple aspects of EF. An eye movement task was used to evaluate inhibition and task switching…

Self-injurious and aggressive behaviors are common in fragile X syndrome (FXS). However, little is known about the persistence of these behaviors and associated risk markers. We established the prevalence and persistence of self-injurious and aggressive behaviors over eight years in males with FXS, and associations with risk markers. Results…

This study examined associations between sibling temperaments, differential parenting, and the quality of the relationships between 50 children with autism spectrum disorder (ASD) and their typically developing siblings. The temperament dimension of persistence, but not activity level or emotional intensity, was found to relate to the quality of…

A study evaluated the effectiveness of a teaching package (graduated guidance and visual activity schedules) in teaching four children (ages 7-8) with autism to increase on-task and on-schedule behavior. Student performance rose to criterion levels upon introduction of the graduated guidance procedures and maintained when the picture activity book…

Our study examined stability of self-regulation and affective expression in children with autism or Down syndrome over a 2 year period. A behaviorally anchored rating scale was used to assess a self-regulation factor (attention, adaptability, object orientation, and persistence), negative affect factor (hostility, irritability, and compliance),…