Purpose: The primary purpose of this study was to validate common respiratory calibration methods for estimating lung volume in children. Method: Respiratory kinematic data were collected via inductive plethysmography from 81 typically developing children and nine children with neuromotor disorders. Correction factors for the rib cage and abdomen…

Factor score regression (FSR) is widely used as a convenient alternative to traditional structural equation modeling (SEM) for assessing structural relations between latent variables. But when latent variables are simply replaced by factor scores, biases in the structural parameter estimates often have to be corrected, due to the measurement error…

The goal of the present study was to address the analytical complexity of incorporating responses and response times through applying the Jeon and De Boeck mixture item response theory model in Mplus 8.7. Using both simulated and real data, we attempt to identify subgroups of responders that are rapid guessers or engage knowledge retrieval…

Multilevel modeling (MLM) is frequently used to detect cluster-level group differences in cluster randomized trial and observational studies. Group differences on the outcomes (posttest scores) are detected by controlling for the covariate (pretest scores) as a proxy variable for unobserved factors that predict future attributes. The pretest and…

This study investigated the potential of using tasks in the Malaysian classroom to facilitate second language (L2) learning, particularly amongst Form 6 (18-year-old) students in the Malaysian secondary school system. These students had undergone 6 years of primary education and 5 years of secondary education in Malaysian public schools. They…

This study investigated whether eye-tracking technology could be employed as a measure of noticing of corrective feedback (in the form of explicit recasts) during NS-NNS task-based synchronous computer-mediated communication (SCMC). Pairs of university-level learners of English (n = 18) engaged in a short chat interaction task with a native…

Demonstrates that by using barcodes to identify random lists of books, taking small monthly samples, and updating a simple control chart, one can effectively: (1) pinpoint reasons why library books are unavailable; (2) gauge if corrective actions or changes in procedure are needed; and (3) determine if such actions are successful. Contains two…

Corrects for potential bias and inconsistency in the estimated coefficient on market competition (among schools) by constructing a system of equations with endogenous expressions of student achievement and market competition. Policy makers seeking to improve student achievement should encourage market competition among schools. (Contains 13…

A study investigated: (1) the distribution of learning styles of students of Japanese as a second language, as measured by the Myers-Briggs Type Indicator, (2) students' preferences for error correction in speaking and writing, as measured by a researcher-developed questionnaire, and (3) relationships between students' learning styles and their…