psychology human 7 Humans 6 female 5 Adult 4 Female 4 Male 4 adult 4 male 4 Young Adult 3 article 3 young adult 3 Adolescent 2 HIV Infections 2 Homosexuality, Male 2 Human immunodeficiency virus infection 2 Patient Acceptance of Health Care 2 Perception 2 Risk Factors 2 Risk-Taking 2 Sexual Behavior 2 adolescent 2 attitude to health 2 high risk behavior 2 human experiment 2 ideology 2 male homosexuality 2 morality 2 patient attitude 2 perception 2