The term assessment refers to a set of operations carried out to deliver a judgment or make a decision. A situation of assessment arises, for example, when candidates are evaluated in a personnel selection, students are examined to test their learning or patients are visited to make a diagnosis of them. In companies and firms, for example, an assessment center is a procedure that organizations can use to evaluate candidates, workers, and employees. It makes use of different methods and techniques, some (i.e. interviews) descending from the so-called idiographic (or clinical) approach, and some (i.e. standardized instruments) descending from the so-called nomothetic (or psychometric) approach. When the assessment center is carried out to train or develop people, it is called a development center. Assessment operations require a series of technical measures (for example in the conduction of interviews and observation, as well as in the administration of standardized instruments). They are so well-known and studied in the literature that they make naive and improvised attempts to assess no longer justifiable. Examples of researches involving those constructs are: “Big Five for work and organizations: FLORA (Role Related Personal Profile),[…]