We are born with a set of traits and abilities, but know nothing about the world or society in which we are born. That part is the blank slate, language has to be acquired, social practices, family, education, developing an understanding of our environment, etc.
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Human behavior is affected both by genetic inheritance and by experience. The ways in which people develop are shaped by social experience and circumstances within the context of their inherited genetic potential. The scientific question is just how experience and hereditary potential interact in producing human behavior.
Each person is born into a social and cultural setting family, community, social class, language, religion and eventually develops many social connections. The characteristics of a child's social setting affect how he or she learns to think and behave, by means of instruction, rewards and punishment, and example. This setting includes home, school, neighborhood, and also, perhaps, local religious and law enforcement agencies. Then there are also the child's mostly informal interactions with friends, other peers, relatives, and the entertainment and news media. How individuals will respond to all these influences, or even which influence will be the most potent, tends not to be predictable. There is, however, some substantial similarity in how individuals respond to the same pattern of influences that is, to being raised in the same culture. Furthermore, culturally induced behavior patterns, such as speech patterns, body language, and forms of humor, become so deeply embedded in the human mind that they often operate without the individuals themselves being fully aware of them. ''
''Data received from the external world is absolutely essential for
brain development. And that any form of sensory deprevation has very serious consequences for the normal development of the brain.
''Babies' brains grow and develop as they interact with their environment and learn how to function within that environment. When babies' cries bring food or comfort, they are strengthening the neuronal pathways that help them learn how to get their needs met, both physically and emotionally. But babies who do not get responses to their cries, and babies whose cries are met with abuse, learn different lessons.''
''These capacities may not fully develop because the required neuronal pathways were not activated enough to form the "memories" needed for future learning (Greenough, Black & Wallace, 1987).''