Psychology Definition Coffee or Tea Mug, Latte Size
In the 1920's, we defined psychology as the science of mental life. Then heading into the 60's, we changed the definition to the scientific study of observable behavior. And today, we define psychology as the science of behavior and mental processes.
The reason why the process of changing an attitude or belief system can sometimes feel like you are losing your mind. To some extent you are doing just that, in order to adapt to new information about the world as you perceive it- S. Bastable (RN- mental and physical Health)