human 69 female 41 Humans 40 adult 38 article 38 male 34 human experiment 20 Female 19 controlled study 19 Male 16 psychology 15 major clinical study 14 Adult 13 questionnaire 13 History of engineering and technology 12 aged 12 clinical article 12 Article 11 Psychology 11 procedures 11 Aged 9 Personnel & human resources management 9 consumer 9 Technology: general issues 8 adolescent 8 behavior change 8 middle aged 8 TJ Mechanical engineering and machinery 7 child 7 cross-sectional study 7