R Harris "believes that parent do not shape their child's personality or character" (Lee, 2003) rather, it is the child's peers who hold more influence on the child. According to Harris, children do not use all the information they have learned from their parents. In general, children behave in the manner which they have learned from people in their social group.

According to Haimowitz, family environment does not contribute much to a child personality and his or her risk for a disorder such as schizophrenia. In a study conducted among adopted-away children whose biological mothers suffered from schizophrenia, results show that "several of the adopted away children of schizophrenic mothers suffered from schizophrenia themselves, while the adoptees whose parents didn't have schizophrenia also did not have schizophrenia themselves" (Haimowitz, 2005). This study espouses the theory that environment does not play a big role in an individual's personality rather biological influences...
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