Four year old Kentaro is playing with a friend. His friend takes Kentaro's blocks and knocks them down. Kentaro shrieks and begins to cry. He is inconsolable. This emotional reaction is a result of what developments in the brain:

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We belong to many different social groups that are made up of people that we interact with regularly. choose one of the following social groups: family friends co workers which social group has influenced you the most? in what ways?

Famous greek philosophers include all of the following, except