What do bio-psychologists believe is the cause of human behavior? *
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Researchers also became interested in understanding how different parts of the brain control human behavior. One early attempt at understanding this led to the development of a pseudoscience known as phrenology. According to this view, certain human faculties could be linked to bumps and indentations of the brain which could be felt on the surface of the skull.

While phrenology became quite popular, it was also soon dismissed by other scientists. However, the idea that certain parts of the brain were responsible for certain functions played an important role in the development of future brain research.4

The famous case of Phineas Gage, a railroad worker who suffered a devastating brain injury, also had an influence on our understanding of how damage to certain parts of the brain could impact behavior and functioning.

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