Humans 34 Mother-Child Relations human 34 mother child relation 34 female 33 Female 32 Male 27 male 27 mother 25 psychology 24 Mothers 23 child 23 Adult 22 adult 22 Child 21 Parenting 18 child parent relation 17 Child, Preschool 16 preschool child 16 Infant 14 infant 14 adolescent 13 Adolescent 12 longitudinal study 12 maternal behavior 12 Longitudinal Studies 11 Maternal Behavior 11 controlled study 11 physiology 10 child behavior 9