The first significant supporting evidence for a biological cause of a mental disorder was the 19th century discovery that the psychotic disorder called general paresis was caused by the same bacterial microorganism that causes __________.
A) malaria
B) Alzheimer's disease
C) syphilis
D) hysteria

Question

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The bacterial microorganism that causes syphilis was found to also cause the psychotic disorder called general paresis. This discovery provided the first significant evidence for a biological cause of a mental disorder.

The First Significant Supporting Evidence for a Biological Cause of a Mental