Female Humans 98 child controlled study female 98 human 98 male 96 Male 93 psychology 85 Child 82 adolescent 61 Adolescent 57 adult 53 Article 49 major clinical study 49 Adult 44 child parent relation 40 article 33 preschool child 33 Child, Preschool 32 physiology 28 randomized controlled trial 28 Young Adult 26 young adult 26 Parents 23 human experiment 23 procedures 21 Middle Aged 18 middle aged 18 questionnaire 18