This study investigated the effect of the digital Down Syndrome LanguagePlus (DSL+) intervention on vocabulary outcomes through a school-delivered randomized controlled trial. A national sample of first graders with Down syndrome from 91 schools was allocated to an intervention group (n = 50), which received daily intervention for 15 weeks, or a…

Previous research has shown that home environment plays an important role in children's early language skills. Yet, few researchers have examined the unique role of family-level factors (socioeconomic status [SES], household chaos) on children's learning or focused on the longitudinal processes that might explain their relations to children's…

This study compared simultaneous prompting with an error correction procedure for teaching three children diagnosed with autism spectrum disorder expressive labels. Using a parallel treatment design nested within a multiple probe design, the researchers taught each participant how to expressively label pictures of sports teams or cartoon…

The aims of this study were to gain insight into the quality of inclusion in mainstream classrooms involving students with Down syndrome and to reveal underlying predictors. A total of 39 8-year-olds with Down syndrome and their teachers participated. Via a survey, the teachers were asked to rate key indicators of inclusion. Their average rating…

This paper attempts to investigate the repetition of Relative Clauses (RCs) in Mandarin children with Developmental Language Disorder (DLD) (aged 4; 5 to 6; 0) and their typically developing (TD) peers. The results of a sentence repetition task indicate that Mandarin children with DLD perform significantly worse than both groups of TD children,…

Background: Children with language impairment (LI) show heterogeneity in development. We tracked children from pre-school to middle childhood to characterize three developmental trajectories: resolving, persisting and emerging LI. Methods: We analyzed data from children identified as having preschool LI, or being at family risk of dyslexia,…

This study describes the reliability and validity of four language tests: The Sentence Comprehension Test (SCT), the Expressive Language Test (ELT), the Sentence Repetition Test (SRT), and the Arabic Picture Vocabulary Test (APVT). These tests were administered to two groups of Qatari Arabic-speaking children: A typically developing group (n=81 to…

One of the basic principles of applied behavior analysis is that behavior change is largely due to that behavior being reinforced. Therefore the use of positive reinforcement is a key component of most behavioral programs for individuals diagnosed with autism. In this study we compared four different classes of reinforcers (i.e., food, praise,…

There is uncertainty about the proportion of children with autism spectrum disorders who do not develop phrase speech during the preschool years. The main purpose of this study was to examine this ratio in a population-based community sample of children. The cohort consisted of 165 children (141 boys, 24 girls) with autism spectrum disorders aged…

This text is designed not only as a teaching text but also as a reference source for students and professionals on the assessment of the cognitive development of children. Chapters address: (1) process challenges of assessing children; (2) context challenges in assessing children; (3) ethical, legal, and professional applications of assessment…