Genetics create the base for human life. A child's given physical traits are predetermined by the components possessed by their parents. Although there is some room for surprise, dominant genetic factors are likely to take the reigns of the physical make-up of a child. As a person is raised, they are exposed to a particular environment and develop habits and opinions based on said environment. People, places and experiences all contribute to the development of an individual's personality.
This study examines how siblings, born and raised in the same conditions are given the opportunity to make decisions that differentiate themselves from their sibling(s). The study also displays the strength of genes, and the relationships siblings are bound by.