Much attention was paid to the problems, issues and factors of acquiring knowledge, as these interests varied, diversified and grew, to include the psychological foundations of knowledge acquisition, representation, retention, retrieval, production and employment. Concerns have also increased in the structural or structural components of information processing and processing systems, in addition to cognitive methods, and factors that activate and stimulate them cognitively and emotionally, in addition to appropriate strategies that help activate the interconnections inherent in the knowledge building to produce methods that facilitate learning, memorization, remembering, innovation and problem solving. To a large extent, that knowledge processing, acquiring, storing, organizing, developing, employing and benefiting from, constitutes the basis that governs and directs activity, and that what happens in the nervous system of activity and physiological changes determine cognitive processes, but they also see the possibility of studying what is going on mental activity by analyzing the manifestations of this Activity, and the use of behavioral measures that help in knowing a lot of information about the structure of the mind and the processes that take place within it.