We examined the contribution of genetic and environmental influences on the stability of withdrawn behavior (WB) in childhood using a longitudinal multiple rater twin design. Maternal and paternal ratings on the withdrawn subscale of the Child Behavior Checklist (CBCL) were obtained from 14,889 families when the twins were 3, 7, 10 and 12 years old. A longitudinal psychometric model was fitted ...

OBJECTIVE To evaluate the effect of Body Mass Index and nutritional status on the menstrual pattern in adolescent girls Methods: Four hundred one adolescent girls who attained menarche were selected from five schools in Hyderabad. The data was collected by trained medical undergraduate and postgraduates by interviewing adolescent school girls using a pre-designed pre-tested questionnaire. BMI w...

This study examined differences between boys and girls regarding efficiency of information processing in early adolescence. Three hundred and six healthy adolescents (50.3% boys) in grade 7 and 9 (aged 13 and 15, respectively) performed a coding task based on over-learned symbols. An age effect was revealed as subjects in grade 9 performed better than subjects in grade 7. Main effects for sex w...

introduction: the purpose of our study was to evaluate the frequency of behavioral problem in pre school-aged children with visual problem. methods: in this expost facto study, which was selected via convenient sampling , 143 children ranging in age from 3-6 years that refer to optometry clinic for routine eye examination were evaluated . after complete ocular exams including evaluation of visu...

To address questions about sex assignment in children with ambiguous genitalia, we studied gender identity in girls with congenital adrenal hyperplasia (CAH) in relation to characteristics of the disease and treatment, particularly genital appearance and surgery. A 9-item gender identity interview was administered to 43 girls with classical CAH ranging in age from 3-18 yr, 7 tomboys, and 29 sis...

Mathematics training is essential for participation in science and engineering careers, yet many students, especially girls, dislike and avoid math, and are therefore unprepared for university science majors and graduate programs. The goal of this project is to increase students’ interest in math and their confidence in their ability to learn math through an intelligent, model-based multimedia ...

Abstract Girls’ attitudes towards mathematics can impact their achievement and career choices in STEM fields. Can the introduction of inquiry-based learning (IBL) classes generate positive associations between girls’ perceptions environment mathematics? Based United Arab Emirates, this study provided important information about relationships factors central to an inquiry method student engageme...

Most studies, to date, have ignored variance in teachers’ self-efficacy (TSE) relation teaching individual students (i.e., student-specific self-efficacy). However, TSE and teacher efficacy differ among students. Thus, this study examines dyadic four domains their correlations with students’ perceptions of student academic self-concept well-being. Results a paper–pencil survey involving 29 teac...

This study was designed to determine the differing cardiorespiratory responses between maximal treadmill ('I'M) and cycle (CY) ergometry, and the reliability and variability of these responses in 46 children 7 to 9 years old (23 boys and 23 girls). Two maximal TM and two maximal CY tests were administered, as well as a body composition assessment. The TM resulted !n a 9.4%, 11.1%, and 10.2% hig...