Psychology is the investigation of the mind and how it processes and directs our thoughts, actions and conceptions. However, in 1879 Wilhelm Wundt opened the first psychology laboratory at the University of Leipzig in Germany. However, the origins of psychology date back thousands of years, starting with the early Greeks. This foundation is closely connected to biology and philosophy; and especially the subfields of physiology which is the study of the roles of living things and epistemology, which is the study of understanding and how we understand what we have learned. The connection with physiology and epistemology is often seen as psychology, which is the hybrid fruit of these two fields of inquiry. It was only in the second part of the 19th century that psychology emerged as a science. René Descartes, a famous French philosopher, contributed an important work to the development of psychology. Descartes presented his theory of dualism as a response to the body-mind conflict among scholars (Schultz & Schultz, 2008). According to Descartes, man is made up of two dimensions: body and mind. Before the concept of body-mind, humans were believed to think with their souls (Wozniak, 1995). Descartes also believed that humans had a tendency towards mechanism but were different from animals because of the ability to think and reason. His perception of humans led to the theory of dualism. The theory of dualism held that the human mind is a separate function from the body. However, the mind and soul work in unison in the brain, through the pineal gland, to create human behavior. The mind was believed to develop and use innate ideas and derived ideas. In essence, Descartes came to the conclusion that… in the middle of the paper… and get the information when needed. Meaningful thinking is the processing of information, which occurs in a sequence of steps. The information processing theorist's learning method is primarily through the study of memory. Currently, due to hybrid heritage, psychology is not considered one of the social sciences like sociology, economic science, government science and cultural anthropology. Psychology is seen as an ally of natural sciences such as biology, chemistry, laws of nature and mathematics (Thornton, 2009). Psychology is also seen as humanities disciplines, which are philosophy, human discourse, music and art. Most psychologists join forces in research and other thinking with intellectuals and scientists in distinct fields. This adds to the diversity of interests, which can be seen in the modern psychology department.