[ABSTRACT] In the following reflectións we are going to study the importance to respect the validity, and the reliability in the practicing of the Rorschach test. We demand to be scrupulous in all the phases of its application, that are administration, codification, calculations and comprehension. Talkin about the way we use some items and variables in Rorschach test and psycometrical test, some studies show us that the variables in R.T. are on a level with psycometrical test items. However thi