female 151 human 151 mother 137 Humans 125 Female 122 male 107 child 102 Mothers 100 Male 91 adult 87 Child 69 Adult 68 psychology 67 preschool child 61 Child, Preschool 58 child parent relation 54 controlled study 47 infant 47 article 46 adolescent 45 major clinical study 38 Infant 37 Parenting 37 mother child relation 36 Adolescent 34 Mother-Child Relations 34 questionnaire 34 Article 33 father 28 human experiment 27