Child Humans 187 child 187 human 187 female 150 male 144 Female 136 Male 133 adolescent 102 Adolescent 99 preschool child 84 adult 82 Child, Preschool 79 psychology 75 Adult 73 child parent relation 63 Article 59 controlled study 45 major clinical study 44 young adult 39 Parents 37 Young Adult 37 questionnaire 36 infant 33 mother 33 Parenting 32 article 30 Infant 28 Middle Aged 28 genetics 28