The Second International Conference on Educational Data Mining (EDM2009) was held at the University of Cordoba, Spain, on July 1-3, 2009. EDM brings together researchers from computer science, education, psychology, psychometrics, and statistics to analyze large data sets to answer educational research questions. The increase in instrumented…

Social comparisons with peers are important sources of self-development during adolescence. Many previous studies showed that students' academic self-concepts (ASC) form by contrasting one's own achievement with the average of one's class or school (the Big-Fish-Little-Pond Effect [BFLPE]). Based on social comparison theory, however, we would…

Many large-scale, school-based interventions have attempted to improve academic performance through promoting students' growth mindset, defined as the belief that one's intellectual ability can increase with practice and time. However, most have shown weak to no effects. Thus, it is important to examine how growth mindset might affect retention…

This study investigated the effects of outdoor education on a 10th grade biology curriculum in terms of the knowledge, attitudes, and retention of students compared to indoor teaching. The quasi-experimental design included three groups: experiment (OE; N = 43), control-II (indoor teaching; N = 35), and control-I (no application; N = 35). A…

The aim of this study is to analyze the effect of different schedules of repeated reading practice on intentional vocabulary learning, and constitutes a partial replication and extension of the authors' previous study on incidental vocabulary learning. Two groups of Taiwanese EFL learners (n = 72) engaged in five repeated reading sessions; one…

The sex-positive framework of sexual development hypothesizes that healthy sexual experiences can be developmentally appropriate and rewarding for adolescents despite the risks involved. Research has not examined whether risky behaviors and rewarding cognitions actually change with sexual debut at a normative or late age. This study measured the…

Based on notions posited by problem behavior theory, the primary goal of the current study was to examine the possibility that adolescents who engage in NSSI are not a homogeneous group but are rather divided into 2 subgroups: (a) adolescents who exclusively engage in NSSI, and (b) adolescents who are involved in NSSI alongside other problem…

It is a widely held view that students' epistemic beliefs influence the way they think and learn in a given context, however, in the science learning context, the relationship between sophisticated epistemic beliefs and success in scientific practice is sometimes ambiguous. Taking this inconsistency as a point of departure, we examined the…

Gang involvement is associated with many negative outcomes. However, the social and emotional development of gang-involved youth has received little empirical investigation. This study examines the social and emotional outcomes of gang-involved youth. Data come from the 2009 Fairfax County Youth Survey administered to eighth, 10th, and 12th grade…

The characteristics of and risk factors associated with binge drinking among South Korean and American adolescents were identified in this study. Data on adolescents in the 9th to 12th grades were extracted from two nationwide data sets: the Korea Youth Risk Behavior Web-based Survey System and the U.S. Youth Risk Behavior Surveillance System.…

This study examined coping strategies as mediators of the relationship between parental emotion socialization and internalizing problems in late adolescence and emerging adulthood, and whether these relationships varied by gender or ethnicity. Participants were 1,087 individuals (M[subscript age]?=?19.35 years; 50% male; 61% African American, 36%…

Background and Aim: Spaced restudy has been typically tested with written learning materials, but restudy with visual representations in actual classrooms is under-researched. We compared the effects of two spaced restudy interventions: A Diagram-Based Restudy (DBR) warm-up condition and a business-as-usual Text-Based Restudy (TBR) warm-up…

The purpose of this exploratory correlation research study was to determine if students who engaged in exercises designed to increase left and right brain hemisphere connections would score higher on identical tests than those who did not perform the exercises. Because the 2001 No Child Left Behind Act requires students to reach benchmarks of…

We investigated the criterion-related validity of four indicators of curriculum-based measurement in writing (WCBM) when using expository versus narrative writing prompts as compared to the validity of passage copying speed. Specifically, we compared criterion-related validity of production-dependent (total words written, correct word sequences),…

The objective of this study was to examine differences in psychological distress, service utilization, and prescriptions for medications between adolescents with histories of family involvement with child protective services (CPS) and adolescents without such involvement. Data on 3,497 students were obtained from the 2009 cycle of the Ontario…