Many are in private practice. Industrial Psychology examines the interface between people and machines. Industrial psychologists, also known as human factors specialists, seek to design equipment and workplaces which maximize human productivity while minimizing hazards, injury and fatigue. Many also work for the government, for instance in the Department of Defense. Training in the psychology of perception is excellent preparation for this field.
Forensic Psychology brings together psychological principles and issues of law.
Many psychologists in this field have also earned a degree in law. Health Psychology studies the relationship between behavior and physical health, particularly the impact of environmental, psychosocial and sociocultural influences on disease or its prevention. Health psychologists may work in a medical setting as part of a team providing health care, or serve as a resource to medical staff . Researchers in the field study topics such as the effect of hostility on blood pressure, the relationship between eating and smoking cessation, the impact of living with chronic pain and illness, or the broad social effects of teen pregnancy, substance abuse, or poor nutrition. Independent Practice has traditionally offered psychologists an opportunity to orchestrate their own career path.