Convergent validity of two tests of conscientiousness. The absence of correspondence between objective measurement of behavior and measurement based on self-report along with generalized use of questionnaires as personality assessment instruments raises a problem with regard to the validity of assessment instruments in this area of study. The goal of this work is to obtain a convergent validity measure for an objective assessment computerized task of conscientiousness based on the development of a functional equally but morphologically different task. The features of the designed assessment task are commented upon. The sample was made up of 267 university graduates (194 males and 73 females). The high convergent validity value obtained (r= .638, p<.001) is a first step in the validation process of both tasks.