human 128 human experiment article 119 female 98 male 93 adult 86 Humans 67 controlled study 55 major clinical study 55 clinical article 40 questionnaire 34 Female 33 Male 32 education 30 learning 26 procedures 20 randomized controlled trial 20 Adult 18 adolescent 18 skill 17 child 15 perception 15 student 15 Adolescent 13 clinical practice 13 quantitative analysis 13 young adult 13 Surveys and Questionnaires 12 Young Adult 12 teaching 12