Humans 142 Young Adult human 142 young adult 142 controlled study 130 female 127 adult 124 male 123 randomized controlled trial 123 Female 120 Male 116 Adult 110 Adolescent 87 adolescent 87 Middle Aged 55 middle aged 55 procedures 47 Article 39 psychology 38 physiology 30 aged 29 human experiment 29 treatment outcome 29 Treatment Outcome 27 Aged 26 major clinical study 25 Double-Blind Method 24 double blind procedure 24 article 23 comparative study 22