This document discusses the nature vs nurture debate on what shapes human development. It explores the views of psychologist Francis Galton, who believed traits were determined by genetics, but also acknowledged environmental factors could influence development. The concept of the "blank slate" is discussed, referring to the view that individuals are born without predetermined traits. Examples of identical twins and the impact of parenting are provided to debate the influences of nature and nurture. The key factors of genetics, environment, parental involvement, education systems, and preschool quality and nurturing are outlined in their effect on learning and development.