Health psychologists are of two general types: clinical health psychologists (similar to medical psychologists) and community health psychologists (who specialise in psychological and psychosocial aspects of health in the larger community). Clinical health psychologists are oriented to biopsychosocial aspects of physical health and illness and their field overlaps that of behavioral medicine to a large extent. Clinical and community health psychologists work in a number of different roles: clinical diagnosis of problems that relate to physical illness, psychological, psychophysiological, and psychosocial interventions; clinical communication; organisational design in medical care; health promotion; teaching and training; consultancy; giving advice on health policy. The clinical specialty is not recognised independently in all countries (e.g., New Zealand).