human 392 female 295 male 293 Humans 286 Education 279 child 264 school child 179 Female 177 Male 173 Article 168 adolescent 166 Schools 165 Child 164 major clinical study 157 controlled study 155 adult 129 Adolescent 127 article 126 preschool child 85 school 84 questionnaire 83 human experiment 82 psychology 80 LB1603 Secondary Education. High schools 76 Pre-school & kindergarten 75 Teacher training 68 clinical article 67 Educational strategies & policy 66 education 64 Primary & middle schools 60