This study investigates the predictive validity of lower extremity strength, strength asymmetry, and soccer-specific fitness in talent identification among elite male youth soccer players. Employing a Retrospective Cohort design, we established a cohort consisting of K-League registered youth players, totaling 219 individuals (all males, aged 16…

This study aimed to provide a deeper understanding of high school students' errors while solving genetics problems. Four students were asked to solve two genetics problems and participate in a modified think-aloud interview. Data from the interview, video clips of the problem-solving process, and test sheets were used to analyse participants'…

Although personal and environmental correlates of adolescents' happiness have been found, the temporal direction of these relationships is less known. The present study explored the longitudinal and reciprocal relationships between self-esteem, school adjustment, and happiness during secondary school years in South Korea. Longitudinal data of…

The present study aimed to examine the relationships between reading and writing, and the role of L2 proficiency in moderating these relationships, among 8th and 11th graders in South Korea. A total of 257 eighth and 322 eleventh graders learning English as a foreign language participated in Study 1 and Study 2, respectively. The findings…

Scientific reasoning and aesthetics are not mutually exclusive disciplines, as scientists' achievements are based not only on cognitive ability, but also on creativity, imagination, and embodied thought through various experiences. With the aim of investigating the role of aesthetic experience in the learning processes involved in the integration…

Background: Despite extensive research examining features of adolescents' ego-identity development, little research has demonstrated patterns of ego-identity development and its relationship with various individual and environmental factors that are theoretically important for identity development. Objective: The current study investigated…

For decades, achievement goal theory has been extensively used, but empirical research still requires a clearer understanding of the underlying factors conceptualized and measured during secondary school periods. In light of the increasing use of longitudinal studies in motivation research, this study aims to investigate the longitudinal…

We investigated whether gifted students' academic perfectionism is associated with their intellectual abilities or learned behaviors as they aim for achievement. Comparing four groups classified by achievement and intellectual ability among 443 Korean students, we examined the differential relations between gifted students and academic…

Adolescence is a universal developmental stage where many changes occur (i.e., biological, social, and psychological) during the second decade of life. Emerging adulthood a subsequent development period between adolescence and young adulthood; during emerging adulthood individuals go through various transitions such as academic and career…

The purpose of the study was to investigate the longitudinal reciprocal relationship between achievement goals and self-determined motivation of students transitioning from middle school to high school. Participants were 3343 students from 9th to 11th grade. The overall results showed that varying degrees of self-determined motivation from middle…

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.…

The purpose of this study was to examine the longitudinal causal relationship among Korean students' past academic performance, self-efficacy beliefs, and academic achievement. The study used an autoregressive cross-lagged model to assess the casual ordering of self-efficacy beliefs and academic achievement in a representative sample of 1177…

Variations in the school-based career exploration activities of Korean high school students were examined. Data represented 5,227 Korean adolescents in Grade 11 contained in the Korean Education Longitudinal Study of 2005, a nationally representative longitudinal database administered by the Korean Educational Development Institute. Latent class…

This study compared bullying experiences between ethnic minority youth and Korean majority youth in South Korea, and examined whether the student-teacher relationship is associated with their bullying experiences. Participants comprised 148 ethnic minority students and 165 Korean majority students in Grades 4 to 11 in South Korea. Bivariate…

The purpose of this study was to examine factors associated with career preparation of high school students in four countries: China, Japan, South Korea, and the United States. The human bioecological theory was used as a framework to examine personal, process, and context factors associated with career preparation of the adolescents. Data were…