Relative adiposity (%Fat) was measured using a smartphone-based application in a convenience sample of adults aged 20-52 years (n = 32, 68.7% female, 84.3% White/Caucasian, 26.7 ± 3.5 kg/m2) across different body positions (Anterior versus Posterior) on consecutive days (Day 1 versus Day 2). A reference photo was obtained from the posterior view…

The purpose of this meta-analytic review was to investigate the relation between motivation and reading achievement among students in kindergarten through 12th grade. A comprehensive search of peer-reviewed published research resulted in 132 articles with 185 independent samples and 1,154 reported effect sizes (Pearson's r). Results of our…

In this study, the construct of motivation to lead (MtL) is considered as a predictor of leadership training effectiveness. MtL, the individual preference to take on leadership roles, is a motivation that specifically relates to the content of leadership training. A total of 132 managers participated in a longitudinal follow-up study. The…

This article reviews research on the effects of music instruction on general cognitive abilities. The review of more than 75 reports shows (1) the consistency in results pertaining to the short-term effects of music instruction on cognitive abilities and the lack of clear evidence on the long-term effects on intelligence; (2) the complex nature of…

The aim of this study is to determine the impact of inquiry-based learning (IBL) on students' academic performance and to assess their satisfaction with the process. Linear and logistic regression analyses show that examination grades are positively related to attendance at classes and tutorials; moreover, there is a positive significant…

In this study the authors analyze longitudinal student survey data from the 17-institution Wabash National Study of Liberal Arts Education (WNS) to determine the extent that the influence of overall exposure to clear and organized instruction on four-year growth in two measures of cognitive development is mediated by student use of deep approaches…

This study investigates whether adequate yearly progress (AYP) status, locale, and sector--common variables used to judge the quality of schools--accurately signal true differences in instructional practices in high school mathematics and science. Using data from the High School Longitudinal Study (HSLS), we find the school-to-school variation in…

Given the wide range of options for students to further their education online, it is important to determine what factors impact overall student perceptions of online course quality. Specifically, the study validates the reliability of Merrill's (2012) First Principles of Instruction as factors that impact students' perceptions of online course…

Learning to program is a complex task, and the impact of different pedagogical approaches to teach this skill has been hard to measure. This study examined the performance data of seven cohorts of students (N = 1168) learning programming under three different pedagogical approaches. These pedagogical approaches varied either in the length of the…

This study investigates whether lesson structure (LS) matters and which components are important for academic engagement during the first grade of secondary education. Data from videoed lessons of 10 Dutch and 12 Indonesian teachers analyzed using an observation protocol show that six LS components are found, that between class and over…

This study investigates the impact of teacher characteristics and instructional strategies on the mathematics achievement of students in kindergarten and first grade and tackles the question of how best to use longitudinal survey data to elicit causal inference in the face of potential threats to validity due to nonrandom assignment to treatment.…

This study extends previous research on teachers' self-efficacy by exploring reciprocal effects of teachers' self-efficacy and instructional quality in a longitudinal panel study. The study design combined a self-report measure of teacher self-efficacy with teacher and student ratings of instructional quality (assessing cognitive activation,…

In this study, we use the US nationally representative Early Childhood Longitudinal Study-Kindergarten Cohort to examine inequalities in opportunities to learn mathematics. Specifically, we examine the characteristics of US students' elementary school math teachers and the instruction they provide. While our findings are consistent with previous…

We tested the incremental impact of a job-related set of variables for explaining a utility judgment training effectiveness variable, that is, course completion skill preparedness, beyond background and course-related variables. Our respondents were two different emergency medical service samples, 415 basics and 742 paramedics, from the 2008 US…

This study analyzed a multi-institutional and longitudinal data set to determine the impact of exposure to effective instruction on first-year persistence--defined as reenrolling for the second year of college at the same institution. Net of important confounding influences, exposure to effective instruction significantly increased the likelihood…