Theories of Knowledge and Psychological Applications How individuals are able to obtain knowledge is something that psychologists have studied for a number of years. The ability to store and retrieve knowledge provides individuals with the propensity to form logical thought, express emotions and internalize the world around them. In order for a psychologist to understand the theories of knowledge it is necessary to investigate the aspects of the theories. In this paper we examine the history , the basic construct, the similarities of the theories and how those theories relate to psychological therapies. History of the theories The neural network model attem