human 166 Humans 139 male 138 female 133 Article 112 adult 92 Female 85 Male 81 controlled study 73 major clinical study 57 child 54 Adult 53 adolescent 50 disability 50 middle aged 48 Child 43 clinical article 41 intellectual impairment 41 aged 40 Adolescent 39 Intellectual Disability 34 Middle Aged 33 Disability 30 Disability: social aspects 29 preschool child 28 psychology 27 Child, Preschool 26 young adult 26 Young Adult 25 questionnaire 24