Illness refers to a state of poor health or disease that affects the normal functioning of an organism. In psychology, it is used to describe abnormal behavior seen as a result of malfunctioning parts within the individual.
Refers to the process of identifying and classifying an illness or disorder based on its symptoms.
Psychopathology: The study of mental disorders and abnormal behavior.
A psychological approach that focuses on understanding human behavior by examining biological factors such as genetics and brain function.