Parent and preschool teacher ratings of the 10 noun categories of MacArthur-Bates Communication Development Inventory were used to study expressive language in 2–4-year-old children with autism spectrum disorder across the home and preschool context. There was no significant difference in the total number of words the children said in the two contexts, but the children said significantly more words in the noun categories “Furniture and rooms” and “People” at home. Only one third of the words the children said were said (...) both at home and in the preschool, while the other two thirds were said only at home or only in preschool. This suggests that what words the children use across contexts differ substantially and that their vocabulary is larger than it seems when measured only in one context. This novel study highlights the importance of assessing the language in children with ASD in multiple contexts in order to better measure their vocabulary and to design appropriate language interventions. (shrink)

Is the assessment of motor milestones valid and scaled equivalently for all infants? It is not only important to understand if the way we use gross and fine motor scores are appropriate for monitoring motor milestones but also to determine if these scores are confounded by specific infant characteristics. Therefore, the aim of the study is to investigate the latent structure underlying motor milestone assessment in infancy and measurement invariance across sex, birth weight, and gestational age. For this study, the (...) birth cohort data from the United Kingdom Millennium Cohort Study was used, which includes the assessment of eight motor milestone tasks from the Denver Developmental Screening Test in 9-month-old infants, depicting early motor development of the first children of generation Z. Confirmatory factor analyses showed a better model fit for a two-factor structure compared to a one-factor structure, and multiple indicators multiple causes modeling revealed no differential item functioning related to sex, birth weight, and gestational age. The study provides support for the use of gross and fine motor scores when assessing motor milestones in infants—both boys and girls with different birth weights and of varying gestational ages. Further investigation into widely adopted assessment tools is recommended to support the use of valid composite scores in early childhood research and practice. (shrink)

Children with developmental disorders, such as attention-deficit/hyperactivity disorder, are at high risk of school-refusal behavior compared with their peers. One of the most used scales to assess SRB is the school refusal behavior scale – revised. The SRAS-R has demonstrated good psychometric properties when used with the general population of children, but, recently, its validity has been questioned when used with children with developmental disorders. We tested the psychometric properties of the SRAS-R parental reports in 96 children with ADHD. Results (...) showed good model fit and internal consistency for the original four-factor structure. Three of the factors were strongly correlated, suggesting that SRB among children with ADHD is caused by several factors. (shrink)