poverty human 80 Humans 69 female 64 Poverty 61 male 59 Female 54 adult 53 Male 49 Adult 42 article 30 adolescent 29 middle aged 29 Adolescent 28 child 28 major clinical study 28 Article 27 Middle Aged 26 psychology 26 controlled study 24 Child 23 United States 18 lowest income group 18 socioeconomics 18 Socioeconomic Factors 16 Young Adult 15 young adult 15 income 14 preschool child 14 Child, Preschool 13