What are 3 medical services that a psychiatrist can prove but a psychologist cannot?

Prescribing medication: Psychiatrists are medical doctors who can prescribe medication to treat mental health conditions, while psychologists cannot prescribe medication.

Performing medical procedures: Psychiatrists can perform medical procedures, such as electroconvulsive therapy (ECT), while psychologists are not trained to perform medical procedures.

Diagnosing and treating medical conditions: Psychiatrists have a medical background that allows them to diagnose and treat both mental health and underlying medical conditions that may contribute to mental health symptoms, while psychologists focus primarily on mental health assessment and treatment.