Final answer:
The Psychology Board of Australia handles the registration and regulation of psychologists, ensuring only qualified individuals practice in Australia.
Step-by-step explanation:
The Psychology Board of Australia is primarily responsible for the registration and regulation of psychologists. Its functions include ensuring that only those individuals who are suitably trained and qualified to practice in a competent and ethical manner are registered as psychologists within Australia. This comprises the regulation of the profession, setting standards and policies, as well as managing the registration process for psychologists. Their duties may also involve taking disciplinary actions against psychologists who have breached these standards. However, they do not handle certification of psychological research, accreditation of mental health facilities, or enforcement of legal actions against psychologists, as these areas fall under different organizations and regulatory bodies.