A researcher discovered that people who have low levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity. The researcher concluded from this experiment that the immune system protects against mental illness as well as against physical disease.
This is a cause and effect assumption problem, where is X causes Y. So the assumption is that Y does not cause X. It's mentioned in Manhattan book.
The researcher’s
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This is a cause and effect assumption problem, where is X causes Y. So the assumption is that Y does not cause X. It's mentioned in Manhattan book.
The researcher’s
...
