human 64 male 57 female 53 Humans 51 child 49 Female 45 Male 41 father 41 child parent relation 40 Child 36 adult 33 psychology 29 Adult 27 adolescent 27 mother 27 Parenting 25 article 24 Adolescent 23 Fathers 22 controlled study 20 Child, Preschool 19 preschool child 19 Parents 18 questionnaire 18 Literature & literary studies 16 Article 14 Mothers 14 History of the Americas 13 human experiment 13 longitudinal study 13