This study investigated the effectiveness of visible-annotation types used in online discussions to enhance the accuracy of shared knowledge and the level of constructed knowledge in computer-supported collaborative learning environments. Three types of visible-annotation were developed specifically for this study, which had the function of…

We examined the independent contributions of prosodic sensitivity and morphological awareness to word reading, text reading accuracy, and reading comprehension. We did so in a longitudinal study of English-speaking children (N = 70). At 5-7 years of age, children completed the metalinguistic measures along with control measures of phonological…

The acquisition of morphosyntax presents challenges for learners of all second/foreign languages. This cross-sectional study investigated English-speaking learners' morphosyntactic accuracy in the symmetrical subject-verb agreement type (in subject-initial sentences) and in the asymmetrical subject-verb agreement type (in verb-initial sentences)…

Missing data is a common problem in datasets that are obtained by administration of educational and psychological tests. It is widely known that existence of missing observations in data can lead to serious problems such as biased parameter estimates and inflation of standard errors. Most of the missing data imputation methods are focused on…

Purpose: The purpose of this study was to evaluate the impact of code-switching on Spanish/English bilingual listeners' speech recognition of English and Spanish words in the presence of competing speech-shaped noise. Method: Participants were Spanish/English bilingual adults (N = 27) who were highly proficient in both languages. Target stimuli…

Purpose: The purpose of this tutorial is to explain how learning to read can be thought of as learning statistical regularities and to demonstrate why this is relevant for theory, modeling, and practice. This tutorial also shows how triangulation of methods and cross-linguistic research can be used to gain insight. Method: The impossibility of…

This study compared five common multilevel software packages via Monte Carlo simulation: HLM 7, M"plus" 7.4, R (lme4 V1.1-12), Stata 14.1, and SAS 9.4 to determine how the programs differ in estimation accuracy and speed, as well as convergence, when modeling multiple randomly varying slopes of different magnitudes. Simulated data…

Purpose: Some pronunciation patterns that are normal in 1 dialect might represent an error in another dialect (i.e., [ko(upsilon)l] for "cold," which is typical in African American English [AAE] but an error in many other dialects of English). This study examined whether trained speech-language pathologists and untrained listeners…

This exploratory study examines student tagging activity within a five-week social bookmarking unit. Students in six sections of a course were tasked with locating, tagging, and then highlighting and discussing course-related materials using Diigo, a social bookmarking tool. Three different tagging approaches were tested: dictionary only,…

A common goal of Intelligent Tutoring Systems (ITS) is to provide learning environments that adapt to the varying abilities and characteristics of users. To do this, researchers must identify the learning patterns exhibited by those interacting with the system. In the present work, we use clustering analysis to capture learning patterns in over…

We developed a version of AutoTutor that helps struggling adult learners improve their comprehension strategies through conversational agents. We hypothesized that the accuracy and time to answer questions during the conversation could be diagnostic of their mastery of different reading comprehension components: words, textbase, situation model,…

This action research study describes the influence of differentiation of reading instruction based on student choice and interest on the reading growth of seventh-grade special education students in the academic enrichment classroom. This research was grounded in the theoretical framework that involves differentiation of instruction (Tomlinson,…

Practicing teachers as well as researchers, mathematicians, and teacher educators have offered opinions and theoretical critiques of the multiple models used to teach integer arithmetic. Few studies, however, have investigated what students learn with models or empirically compared affordances and constraints of integer models. This led me to…

Some schools use results from the MAP® Growth™ interim assessments from the Northwest Evaluation Association (NWEA®) in a number of high-stakes ways. These include as a component of their teacher evaluation systems; to determine whether a student advances to the next grade; or as an indicator for student readiness for certain programs or…

The research on interpreting aptitude has focused on the abilities, skills and personal traits of individuals in order to predict their future interpreting performance. However, an important variable between the personal characteristics and success of trainee interpreters in interpreter training, which is instructional practices, is overlooked.…