Semantic diversity -- a metric that captures variations in previous contextual experience with a word -- influences children's lexical decision and reading aloud. We investigated the effects of semantic diversity and frequency on children's reading of words embedded in sentences, while eye movements were recorded. If semantic diversity and…

The present study investigated the usefulness of a pre-programmed, teleoperated, socially assistive peer robot in dynamic testing of complex problem solving utilising the Tower of Hanoi. The robot, in a 'Wizard of Oz' setting, provided instructions and prompts during dynamic testing to children when they had to solve 3 D Tower of Hanoi puzzles.…

We propose that machine-learned computational models (MLCMs), in which the model parameters and perhaps even structure are learned from data, can complement extant approaches to the study of text and discourse. Such models are particularly useful when theoretical understanding is insufficient, when the data are rife with nonlinearities and…

This study compared the relative contribution of earliest assessment of preschool children's context-specific problem behaviors with subsequent observations of those behaviors for the prediction of later academic and sociobehavioral performance in first grade. Using a nationally representative sample of low-income children from the Head Start…

The aim of the present study is two-fold. First, it uses eye-tracking to investigate the dynamics of item reading, both in multiple choice and matching items, before and during two hearings of listening passages in a computerized while-listening performance (WLP) test. Second, it investigates answer changing during the two hearings, which include…

The rise in Spanish heritage language and Spanish native speaker (SHL/SNS) learners in language programs traditionally designed for second language (L2) learners has prompted an interest in the development of a more inclusive placement exam for diverse learners. Some practitioners opt for an instrument that compiles a comprehensive profile of the…

Background: Reading development in agglutinating African languages is a relatively underresearched area. While numerous studies highlight the low comprehension levels among learners reading in African languages in South Africa, little has been done to probe beneath this 'comprehension iceberg' in terms of decoding skills. Aim: As a tentative step…

Linguistic self-confidence is an underlying factor in L2 motivation and positive L2 learning outcomes. However, few studies have investigated its hypothesized relationship to objective L2 learning outcomes or the relationship between self-confidence and cognitive and affective individual differences that influence L2 learning. In this study,…

Although many school counselors use self-report graduation surveys to collect data about their program and to track students after graduation, there is a dearth of research examining the survey results' accuracy. The purpose of this study was to explore the accuracy of high school seniors' self-report of intended college enrollment. Overall,…

Collaborative problem solving behaviors are difficult to identify and foster due to their amorphous and dynamic nature. In this paper, we investigate the value of considering early class period behaviors, based on small group development theory, for building predictive machine learning models of collaborative behaviors during problem solving. Over…

Online courses often include discussion forums, which provide a rich source of data to better understand and improve students' learning experiences. However, forum messages frequently contain private information that prevents researchers from analyzing these data. We present a method for discovering and redacting private information including…

SIBTEST is a differential item functioning (DIF) detection method that is accurate and effective with small samples, in the presence of group mean differences, and for assessment of both uniform and nonuniform DIF. The presence of multilevel data with DIF detection has received increased attention. Ignoring such structure can inflate Type I error.…

Motor skills represent high-precision movements performed at optimal speed and accuracy. Such motor skills are learned with practice over time. Besides practice, effects of motivation have also been shown to influence speed and accuracy of movements, suggesting that fast movements are performed to maximize gained reward over time as noted in…

Spatial panel data models have been widely studied and applied in both scientific and social science disciplines, especially in the analysis of spatial influence. In this paper, we consider the spatial dynamic nonparametric Durbin model (SDNDM) with fixed effects, which takes the nonlinear factors into account base on the spatial dynamic panel…

This study investigated the effect of stimulus presentation probability on accuracy and response times in an absolute identification task. Three schedules of presentation were used to investigate the interaction between presentation probability and stimulus position within the set. Data from individual participants indicated strong effects of…