Not to be confused with Phycology, Physiology, methods of studying of the child with mental retardation Psychiatry. Psychology is the science of behavior and mind, including conscious and unconscious phenomena, as well as feeling and thought. In this field, a professional practitioner or researcher is called a psychologist and can be classified as a social, behavioral, or cognitive scientist.
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. In 1890, William James defined psychology as “the science of mental life, both of its phenomena and their conditions”. This definition enjoyed widespread currency for decades. However, this meaning was contested, notably by radical behaviorists such as John B. The ancient civilizations of Egypt, Greece, China, India, and Persia all engaged in the philosophical study of psychology. In China, psychological understanding grew from the philosophical works of Laozi and Confucius, and later from the doctrines of Buddhism.