The Psychology is a very young science, of less than two centuries of age. Until the XIXth century, it was the philosophy the one that was treating the topics related to the human psiquismo. And if we stop a moment to be reflected, we will wonder as this can be possible if what more should matter for us is to meet us and to understand us from a scientific point of view. To understand what we have the human beings that one makes us endure of such a different form simultaneously that fascinating.

Several explanations exist proposed like that the emergence of the sciences has been progressive towards the most complex thing: How to explain for example the infatuation in scientific terms? But probably the excellent reason is the widespread conception of the human being like being divine, created by God to his image and resemblance. The ideology has delayed the Psychology for centuries. Along the history, we have thought that beings created and dominated by top forces, de facto, an epileptic attack it was considered that a demoniacal possession even does not very much.

There has been necessary a big transformation influenced by scientific discoveries in physics, biology, medicine... to be able to conceive the human being as a natural, biological being, product of the nature, just as the rest of the animals, and, therefore, I object of study of the science. Even as for the mind, this so mysterious entity, product of a brain that the evolution has been developing, which guides our behavior, and which we can go so far as to understand, that it is what claims this science. WHAT MOTIVATES OUR PERFORMANCE? The man, since we have said, is a natural being, creed for the nature, but also, and not less important, he is a social being, since we live immersed in cultures. It is for it that at the time of looking you cause to our behavior, the Psychology has to resort to the knowledge of the natural sciences like physiology, biology, as well as to human sciences like the philosophy, anthropology, sociology... everything in order to looks for explanations to our conducts, our cognitions (attention, memory...) and what is much more complex: our feelings. This complexity in his study supposes the existence of different disciplines in Psychology that defer, between many other things, in the form of intervention with the patient, like for example the cognitive psychoanalysis, the psychology behavioral and the humanist psychology.

What motivates us to act? Why are we affected by the things of a concrete and personal way? What is the intelligence? The personality? Why do the pathologies arise? Finally: How does our mind work?

Although a long way still stays for covering, the Psychology tries to give answer to these questions contributing his knowledge based on scientific studies. The professional ethics should always push the psychologist to use it to the advantage of the collective or individual good.