What is phrenology?
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Phrenology is the theory that differences in bodily secretions correspond to personality.
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Phrenology is the theory that differences in body shape may correspond to personality.
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Phrenology is the theory that differences in cranial size correspond to personality.
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Phrenology is the theory that differences in diet and blood group correspond to personality.
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None of these
Phrenology: At one point in time, psychologists believed that behavioral characteristics of humans could be described by measuring the bumps on their heads. The technique was established by Francis Gall in the early 1800's and, as it can be understood, it didn't last long as he couldn't establish solid results. However, it did set the stage for later developments and approaches to measuring specific areas of the brain.