A City Guide To Meizhou for Different countries differ on this and you are referred to your national psychological associations for more information and also to Chapter where we have described health psychology careers. H ealth psychology Health psychology takes a biopsychosocial approach to health and illness Engel , and thus considers biological, social and psychological factors involved in the aetiology, prevention or treatment of physical illness, as well as in the promotion and maintenance of health. Health psychology is changing as it grows and recently it has been suggested Marks ? that four approaches to health psychology are developing in parallel . clinical health psychology, which merges clinical psychology’s focus on assessment and treatment with a broader biopsychosocial approach to illness and health-care issues and which is generally the domain of clinical psychologist practitioners e.g. Johnston and Kennedy ; . public health psychology, with an emphasis on public health issues, e. A City Guide To Meizhou 2016.