human 125 self concept Humans 105 female 99 male 90 adult 83 Female 73 Male 61 Article 55 controlled study 54 psychology 51 Self Concept 50 Adult 45 article 36 major clinical study 33 adolescent 32 middle aged 32 young adult 32 Adolescent 31 Young Adult 30 questionnaire 30 Middle Aged 29 Self Efficacy 26 aged 24 child 24 human experiment 24 cross-sectional study 23 Surveys and Questionnaires 19 randomized controlled trial 18 Aged 17