This study investigated the extent to which class-specific parameter estimates are biased by the within-class normality assumption in nonnormal growth mixture modeling (GMM). Monte Carlo simulations for nonnormal GMM were conducted to analyze and compare two strategies for obtaining unbiased parameter estimates: relaxing the within-class normality…

The piecewise latent growth models (PWLGMs) can be used to study changes in the growth trajectory of an outcome due to an event or condition, such as exposure to an intervention. When there are multiple outcomes of interest, a researcher may choose to fit a series of PWLGMs or a single parallel-process PWLGM. A comparison of these models is…

This study investigated the validity and reliability of scores on the instrument employing Rasch analysis in a sample of 299 Malaysian adolescents aged between 16 and 19 and provided further evidence for the validity among the sub-constructs: social self-efficacy, academic self-efficacy, and emotional self-efficacy.

The Implicit Association Test (IAT) is increasingly used in developmental research despite minimal evidence of whether children's IAT scores are reliable across time or predictive of behavior. When test-retest reliability and predictive validity have been assessed, the results have been mixed, and because these studies have differed on many…

Recent studies have suggested that sensory processing atypicalities may share genetic influences with autism spectrum disorder (ASD). To further investigate this, the adolescent/adult sensory profile (AASP) questionnaire was distributed to 85 parents of typically developing children (P-TD), 121 parents from simplex ASD families (SPX), and 54…

The study of executive function (EF) has become increasingly popular in multiple areas of research. A wealth of evidence has supported the value of EF in shaping notable outcomes across typical and atypical development; however, little evidence has supported the cognitive contributors to early EF development. The current study used data from a…

Given the growing importance of support needs assessment in the field of intellectual disability, it is imperative to develop assessments of support needs whose scores and inferences demonstrate reliability and validity. The purpose of this study was to examine the criterion validity of scores on the "Supports Intensity Scale-Children's…

Adverse childhood experiences (ACEs) are associated with health-risk behaviors in general samples of adults and adolescents. The current study examined the association between ACEs and these behaviors among a high-risk sample of early adolescents. Five hundred fifteen 9- to 11-year-old children placed in foster care due to maltreatment were…

Background: Two experiments investigated the contribution of conflict inhibition to pragmatic deficits in children with autism spectrum disorder (ASD). Typical adults' tendency to reuse interlocutors' referential choices (lexical alignment) implicates communicative perspective-taking, which is regulated by conflict inhibition. We examined whether…

Working memory (WM) has long been associated with deficiencies in reading. Approximately 35% of students in the United States who receive special education services do so under the category of specific learning disability (SLD). The study's theoretical underpinning was Baddeley's model of WM; previous research revealed a significant literature gap…

Objective: Accurate estimation of developmental trajectories can inform instruction and intervention. We compared the fit of linear, quadratic, and piecewise mixed-effects models of reading development among students with learning disabilities relative to their typically developing peers. Method: We drew an analytic sample of 1,990 students from…

This study investigates relationships between acquisition of exhaustivity in single and multiple "wh"-questions, mastery of semantic and pragmatic aspects of quantifier comprehension, and general skills in receptive grammar. The participants of the study were 25 Polish monolingual typically developing children aged 4;02-6;02, who were…

Educators and practitioners working with children diagnosed with Autism Spectrum Disorder (ASD) are concerned with deficits in positive affect and social-emotional reciprocity, which may affect their daily living and school success. This pilot study explored the social-emotional impact of eight one-hour sessions of a novel dyadic within-group…

Terminal changes in fundamental frequency provide the most salient acoustic cues to declarative questions, but adults sometimes identify such questions from pre-terminal cues. In the present study, adults and 7- to 10-year-old children judged a single speaker's adult- and child-directed utterances as questions or statements in a gating task with…

Specific language impairment (SLI) is a heterogeneous disorder affecting various aspects of language. While most studies have investigated impairments in the domain of syntax and morphosyntax, little is known about compositional semantics and the process of deriving pragmatic meanings in SLI. We selected a group of sixteen monolingual…