Summary: 1) Does circumcision prevent the spread of HiV? 2) Cohabitation correlated with higher divorce rates? 3) Have girls really caught up to boys in their math skills? 4) How do we make logical decisions in everyday life?
Summary: 1) Does circumcision prevent the spread of HiV? 2) Cohabitation correlated with higher divorce rates? 3) Have girls really caught up to boys in their math skills? 4) How do we make logical decisions in everyday life?