Psychiatrists diagnose, treat and try to prevent human mental, emotional and behavioural disorders. Psychiatrists should not be confused with psychologists, whose training does not include a medical degree and who do not have the authority to prescribe medicines.

Psychologists study human behaviour and the processes associated with how people think and feel, conduct research and provide treatment and counselling in order to reduce distress and behavioural and psychological problems. They promote mental health and positive behaviour in individuals and groups. Psychologists work on a broad range of issues with clients, including children, adults, couples, families and organisations.

Psychotherapists provide diagnosis and treatment of mental and emotional disorders using psychotherapeutic methods such as behavioural therapy, biofeedback, relaxation therapy and other techniques. They work with individuals, couples, families and groups to help them overcome a range of psychological and emotional issues.

Art therapists work with a client or a group of clients to help them address emotional and psychological issues through creative activities such as drawing, painting, sculpting and collage.

Exercise scientists assist sportspeople to achieve the best possible sporting performance by applying knowledge and techniques from the areas of biomedical science, physiology, biomechanics (the study of human movement), nutrition, psychology and sport assessment.

Medical practitioners diagnose physical and mental illnesses, disorders and injuries, and prescribe medications and treatment to promote or restore good health.

Music therapists provide therapeutic programmes through the planned and controlled use of music to help people of all ages, including those with special needs because of social, emotional, psychiatric, physical or intellectual impairments.

Registered nurses assess, plan, provide and evaluate preventative, curative and rehabilitative care for patients, clients and residents in a wide variety of settings.

Rehabilitation counsellors assist people with disability or medical conditions or who are experiencing social disadvantage to attain individual rehabilitation goals, including return to paid employment. They assist people with physical or psychological disabilities, refugees, ex-offenders, disadvantaged youth and those experiencing long-term unemployment.