Final answer:
A psychiatrist is a psychologist who is qualified to prescribe and distribute medications as treatment for psychological illness.
Step-by-step explanation:
A psychologist who is qualified to prescribe and distribute medications as treatment for psychological illness is a psychiatrist. Psychiatrists are medical doctors with a specialization in neuroscience who diagnose and treat mental disorders, including prescribing medications. Unlike psychologists, psychiatrists have a doctor of medicine (MD) degree and can administer psychiatric medications.