From the dark ages where people were treated inhumanely to today, in this century where mental health is taken care of and those with mental health problems are treated as equals. All the discoveries and reforms along the way have led us to some of the most significant names in the psychological field today, such as Sigmund Freud, Carl Jung, Alfred Adler, Wilhelm Wundt, BF Skinner, Pavlov, Watson, and EL Thorndike. The past has paved the way for abnormal psychology to be more accepted today and has made easier ways to handle those suffering from mental disorders. In summary, from the Greeks to contemporary contributors to modern psychology, each had a place in the timeline for creating a better world, more humane treatment of the mentally ill, and better illumination of mental health problems.