Female Humans 85 Male 85 child controlled study female 85 human 85 male 85 psychology Child 75 adolescent 53 Adolescent 50 adult 46 Article 44 major clinical study 41 Adult 39 child parent relation 35 preschool child 28 Child, Preschool 27 article 26 randomized controlled trial 25 Young Adult 23 young adult 23 Parents 22 physiology 21 procedures 18 human experiment 17 questionnaire 17 Middle Aged 16 middle aged 16