Examining the dimensionality of oral discourse language skills in early childhood is crucial in informing theories of language and literacy development. This study examined the factor structure of linguistic and discourse features in oral text production for second graders. A total of 330 English-speaking second graders (M[subscript age] = 7.33,…

Examining the dimensionality of oral discourse language skills in early childhood is crucial in informing theories of language and literacy development. This study examined the factor structure of linguistic and discourse features in oral text production for second graders. A total of 330 English-speaking second graders (M[subscript age]= 7.33,…

Purpose: In this validation study, we examined the factor structure of the mediated learning observation (MLO) used during the teaching phase of dynamic assessment. As an indicator of validity, we evaluated whether the MLO factor structure was consistent across children with and without developmental language disorder (DLD). Method: Two hundred…

Assessing and monitoring student progress is becoming increasingly important in classrooms and for accountability purposes. Yet, in order to interpret changes in assessment results from one year to the next as reflecting differences in underlying ability rather than as variations in the measurement, the assessments used should be measuring the…

This study investigated the psychometrics of the "Diagnostic Evaluation of Language Variation-Screening Test" (DELV-S) test using confirmatory factor analysis, item response theory, and differential item functioning (DIF). Responses from 1,764 students in kindergarten through second grade were used in the study, with results indicating…