Longitudinal studies Child psychology 6 Research 6 Youth 6 Social conditions 5 Social sciences 5 Statistical methods 5 more ... Attitudes 4 Child development 4 Longitudinal Studies 4 Psychological aspects 4 Psychology 4 Aging 3 Case studies 3 Developmental psychology 3 Education 3 Gifted children 3 Methodology 3 Middle age 3 Social aspects 3 Adolescent psychology 2 Adopted children 2 Children 2 Deviant behavior 2 Employment 2 Family 2 Gifted persons 2 Learning 2 Longitudinal method 2 Mathematical statistics 2 less ...