Nature and nurture Social aspects 8 Intellect 7 Psychology 7 Genetic psychology 6 History 6 Gender identity 5 more ... Intelligence levels 5 Sociobiology 5 Adaptation (Biology) 4 Child development 4 Developmental psychology 4 Ecology 4 Human genetics 4 Philosophy 4 Behavior genetics 3 Children and the environment 3 Educational psychology 3 Environmental psychology 3 Euthenics 3 Gender 3 Human ecology 3 Intelligence tests 3 Physical anthropology 3 Psychological aspects 3 Services for 3 Transsexuals 3 Twins 3 Adopted children 2 Child psychology 2 less ...