To illuminate individual differences in the development of attention-deficit hyperactivity disorder (ADHD) symptoms in the general population, psychometric measures are needed that can capture general population-level symptom variation reliably, validly, and comparably from childhood through to the transition to adulthood. The ADHD subscale of the…

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…

Introduction: Individuals' math value beliefs are theorized to influence who persists in STEM. However, the existing findings on gender differences in adolescents' math value beliefs are inconsistent. The goal of this study was to use three existing datasets to help clarify when gender differences emerge for high school adolescents and for whom…

Motor, psycho-emotional, cognitive and social variables, plus other factors like gender, influence how schoolchildren perceive their motor competence level. By means of a hierarchical linear regression analysis, this longitudinal study aimed to determine the predictive value that coordination, anxiety, and self-esteem at the age of 9 years can…

This study examines how self-esteem and social support (parental, teacher, and peer) influence the career maturity of Korean adolescents over time. By synthesizing findings from 18 longitudinal studies, a meta-analysis was conducted. Results reveal that while self-esteem initially shows a strong correlation with career maturity, this relationship…

Research suggests that heterogeneous life experiences (e.g. multilingualism) might facilitate the development of mental flexibility. The current paper presents the conceptual replication of a study originally presented by Greve and colleagues [Greve, W., Koch, M., Rasche, V., and Kersten, K. (2021). Extending the Scope of the 'Cognitive Advantage'…

Girls, more than boys, experience a decrease in the severity of autism symptoms during childhood. It is unclear, however, which specific autistic behaviors change more for girls than for boys. Trajectories of autism symptoms were evaluated using the Autism Diagnostic Observation Schedule-calibrated severity scores (ADOS-CSS). Change in the…

School stress is widespread among students' worldwide, impacting academic success and mental health. Most research focuses on average stress levels but lacks insights into temporal trends and inequalities. Using repeated longitudinal survey data on 33,000 students in Swedish compulsory school from the Evaluation Through Follow-up (ETF) study, we…

Research on self-assessment has overwhelmingly conceptualized it as a product and treated students as a homogeneous group, restraining our understanding of the topic. To address this gap, this study aimed to identify different student profiles based on their self-assessment and to examine how it related to their learning achievement over time.…

There has been a great deal of scholarly interest in trying to uncover the factors that account for variation in educational attainment. Equally important, but not yet fully answered, is why some people aspire for high levels of education and others do not and, moreover, why some people believe that they will reach their educational aspirations…

Creativity and entrepreneurship are fundamental to the personal and professional development of new generations and for social progress in general. The primary aim of this study was to analyze changes in the creative and entrepreneurial self-efficacy of undergraduates as they progress through university, and to examine whether these trajectories…

This article uses survey data from the China Health and Retirement Longitudinal Survey (CHARLS2015) to test whether the educational level across three generations are transmitted within families and whether number of grandparents' children influences these intergenerational transmissions in China. We obtain evidences that the educational level…

Processes that unfold over individuals' life courses are often associated with inequalities later in life. The literature lacks methodological approaches to analyze inequalities in outcomes between groups, for example, between women and men, in a life-course-sensitive manner. We propose a combination of methods--of sequence analysis, which enables…

Using data from the Early Childhood Longitudinal Study--Kindergarten Class of 2011 (n = 14,370; 51% Male; 51% White; 14% Black; 25% Hispanic; 4% Asian; and 6% Other), this study examined the cumulative, timing-specific, and enduring associations between student-teacher relationships in the United States and a broad range of student outcomes.…

Introduction: Recent evidence demonstrates an association between social media addiction (SMA) and aggressive behaviors; however, the longitudinal relationship between these two variables remains not fully understood. The aim of this study was to examine the longitudinal relationship between SMA and aggressive behaviors (overt and relational…