Assessing students' conceptions related to independence of events and determining probabilities from a sample space has been the focus of research in probability education for over 40 years. While we know a lot from past studies about predictable ways students may reason with well-known tasks, developing a diagnostic assessment that can be used by…

Adults play important roles in the lives of adolescents, serving as role models, sources of social support, and providers of social capital. Natural mentoring relationships (NMRs), relationships between adults and youth that rise to a level of significance for the youth, have a positive impact on youth outcomes in a number of academic,…

Objectives: This study used a multi-informant approach to examine differences in types and rates of technology used by adolescents with and without attention-deficit/hyperactivity disorder (ADHD), associations between technology use and sleep/daytime sleepiness, and whether technology use was differentially related to sleep/daytime sleepiness in…

Background: Synthetic and other drugs have become available to teens, yet little is known about risk factors of use. Objective: To examine adolescent use of one class of synthetic drugs and its association with perceptions about its prevalence, access, and risk of substance use. Methods: Adolescents from a convenience sample of 104 middle and high…

Mathematical problem solving typically involves manipulating visual symbols (e.g., equations), and prior research suggests that those symbols serve as diagrammatic representations (e.g., Landy & Goldstone, 2010). The present work examines the ways that instructional design of student engagement with these diagrammatic representations may…

In recent years, an increasing number of analyses in Learning Analytics and Educational Data Mining (EDM) have adopted a "Discovery with Models" approach, where an existing model is used as a key component in a new EDM/analytics analysis. This article presents a theoretical discussion on the emergence of discovery with models, its…