Crania Americana: How Pseudo Science can be used to support negative stereotypes-racism/sexism

Phrenology a totally insane pseudoscience(usually theories that explain human behavior by attributing behaviour to biological features such as limbic part of the brain/size of brain) yet once very widely accepted as scientific evidence of inferiority of other races to Caucasian. Its very easy to convince people that something is scientific when they have a bias they want that 'science' or evolutionary psychology or biology to confirm.

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The pseudoscience that blacks have lower pain sensitivity and reactivity to drugs and disease has lead to them being a primary target upto date for vaccine experimentation and other medical research.