Who is considered the father of psychology?
Wilhelm Maximillian Wundt
There are really several key contributors who all developed the ideas of psychology - sometimes along different perspectives. It has also developed along different lines over the years.
But, the original concepts of a psychological approach to problems were put forward by Freud, Adler and Jung. It is generally agreed however, that the first person who created the terms was Wilhelm Wundt, who opened the Institute for Experimental Psychology at the University of Leipzig in Germany in 1879.
Wundt noted psychology as a science apart from philosophy and biology, was the first person ever to call himself a psychologist.
Sigmund Freud is often cited as the "father" of psychology, but his contributions were actually from a particular perspective. He did produce a large volume of work describing his approach, and may be the "Father of Psychoanalysis" (which is NOT the same thing as Psychology!). However, Dr. Wundt first coined the term and established the Institute. Dr. Freud's first published work in the field wasn't issued until 1895 - 16 years AFTER the establishment of Dr. Wundt's Institute!