Scientists try to affect the workings of the brain in order to treat mental illnesses such as anxiety, depression, and schizophrenia.
John Watson presents his theory that human behavior is based upon conditioned responses to stimuli. His theory goes against the eugenics theory which is reaching its height at this time. This marks the beginning of the behaviorist school of psychology.
Wilder Penfield identified specific areas of the brain that control motor impulses, sensory inputs, and memories.
New scanning devices like the CT scanner and MRI allow for detailed mapping of the brain's functions
The roles of brain chemicals such as endorphins are discovered. Behavior is now thought of as a biochemical event
With new knowledge more effective drugs are developed for the treatment of mental illnesses