Psychology has been unable to reach the status of branch of knowledge.
While psychological knowledge is often applied to the assessment and treatment of mental health problems , it is also directed towards understanding and solving problems in several spheres of human activity .	assessment	psychological assessment	treatment	psychotherapy	mental health	mental health	problems	psychopathology	human activity	Human behavior	health	health psychology
By understanding psychological factors that influence health , and constructively applying that knowledge , health psychologists can improve health by working directly with individual patients or indirectly in large-scale public health programs .	psychological	psychological	public health	public health
