BackgroundNutrition behaviors of adolescent girls is of serious health concerns. Although nutrition education interventions in Iran have met with some success, most of them could not promote nutrition behavioral changes. The aim of our study is to determine a school-based nutrition education intervention to improve adolescents’ nutrition behaviors and behavioral mediators based on the social co...

The purpose was to explore the educational potential accessible with the aid of international communications networks and computer-mediated communication mainly as seen by the participating Finnish students. This was associated with students’ attitudes and preferences to teaching practices and teaching tools. A more general purpose was to examine gender sensitivity of e-mail and the question of...

Using linked Danish survey and register data, we estimate the causal effect of age at kindergarten entry on mental health. Danish children are supposed to enter kindergarten in the calendar year in which they turn 6 years. In a "fuzzy" regression-discontinuity design based on this rule and exact dates of birth, we find that a 1-year delay in kindergarten entry dramatically reduces inattention/h...

Gender differences in science amongst year 8 students in Australia in TIMSS 2003 were a surprise, given two decades of programs designed to increase girls’ participation levels in science. This study examines student and school-level characteristics simultaneously using hierarchical linear modelling to estimate the ability of each to explain gender differences in science achievement for student...

We researched the impact of gendered pedagogical agents on student attitudes for math, motivation and achievement in math, within the context of an adaptive tutoring software for high school mathematics. Learning companions emphasize perseverance by valuing effort in challenging tasks. They are also empathetic, as they reflect students’ emotional states. The results suggest that, across two stu...

This article applies Casual Layered Analysis (CLA) (Inayatullah, 2004) as a framework to examine factors that affect applying a student-centered learning approach in Vietnam. The Four layers of CLA help disclose weaknesses in the current traditional learning approach, causes that create the problems and hidden beliefs that keep traditional perceptions about learning permanent. The results revea...

Scholars in student learning have shown a growing interest in using Student Teams Achievement Divisions (STAD) as a cooperative learning technique in classroom teaching. This study explores the effects of STAD on student achievement, attitude and motivation in economics education. Three research instruments, a Test of Economic Literacy (TEL); a Motivation Scale and an Economics Modular Test wer...

iii Acknowledgement To God be the glory for the things He has done! Thanks to my Lord and Savior Jesus Christ for giving me the strength and fortitude to make this endeavor a reality. A very special thanks to the loves of my life—Pamela, my darling wife, and Joneya, daddy's little princess—your encouragement and support have been unwavering and I love both of you immensely. Now that this is don...

This study examined the impact of terrorism on adolescents, who may be resolving developmental issues regarding their vulnerability to death. Approximately 4 months after the September 11th attacks, a survey was given to 973 Upper Midwest adolescents and teachers. Quantitative analyses indicated that adolescents (especially girls) were frightened and upset but also used many coping strategies. ...