male human 363 female 354 Humans 304 Male 275 Female 270 child 270 Child 201 child parent relation 186 psychology 177 adult 161 adolescent 159 Adolescent 135 preschool child 132 Child, Preschool 126 Adult 115 controlled study 114 Article 113 Parents 112 major clinical study 102 article 92 questionnaire 91 Parenting 77 Surveys and Questionnaires 70 mother 61 longitudinal study 60 physiology 57 infant 56 cross-sectional study 55 Parent-Child Relations 52