Many have already written works that evaluate the play using this method, and one can also do this simply by having a good understanding of what a psychological evaluation truly is. Before beginning the analysis, it would be necessary to have a proper understanding of the psychoanalytical perspective. After attaining knowledge about the perspective, and reading Hamlet of course, one can begin to make important connections using details from the play. In the actual play, one of the principle argument is whether Hamlet is truly mad or not. To analyze this for validity, one would have to look at the linguistics of the play and the situations that play out within it. There is concrete evidence, as well as implied detail, which leads one to believe that Hamlet is only acting as if he were mad in order to carry out his plan to avenge the death of the late King Hamlet.
One of the first examples of this evidence shows itself when Hamlet warns Horatio of what he's planning, and in effect, not to blow his cover.
"Here, as before, never, so help you mercy, how strange or odd soe'er I bear myself, As I, perchance, hereafter shall think meet to put an antic disposition on, that you, at such times seeing me, never shall...note that you know aught of me:this is not to do, so grace and mercy at your most need help