Casual conclusions

What does the biological approach offer?

Explanations for mental illnesses in terms of the action of neurotransmitters in the brain

Where does the evidence of mental illness and neurotransmitters come from?

Studies that show a particular drug reduces symptoms of a mental disorder and is assumed that the neurochemical in the drug causes the disorder.

What does discovering an association between 2 factors mean?

One is not a cause

Why is this a limitation?

The biological approach is claiming to have discovered causes where only an association exists