Professionals in the field of mental health: Psychologist

1. A psychologist is a non-medical health-care professional who has taken a masters degree or doctorate in psychology (PsyD or PhD) and some clinical training.
2. Psychologists are qualified to conduct psychological testing, which is critical in assessing a person's mental state and determining the most effective course of treatment. 
3. They can treats people using interaction (therapy). Means they focus extensively on psychotherapy and treating emotional and mental suffering in patients with behavioral intervention.
4. Psychologists cannot prescribe medicine. 

Clinical psychologists have studied psychology with the aim at understanding, treating and preventing mental problems and disorders. The usual educational path in Asia is:

1. A bachelor degree with emphasis on courses related to mental health followed by
2. A master level degree program specializing in clinical psychology which usually is two years in duration. The master level education and a suitable period of internship is the usual standard for licensing (registration) for clinical psychologists in Asia.
3. A doctorate. Clinical psychologists, particularly if those with doctorate level education are able to carry out research studies e.g. of the effectiveness of various mental health treatments.