The Cattell's system of sixteen primary factors in the normal personality sphere has not changed since its foundation studies approximately 50 years ago. This paper examines the evidence that supports the first order structure of the Spanish version of the 16 PF-5. This questionnaire was administered to 3,446 people, and the pool of items was factored. Principal factor solution and oblique rotation were performed. The sorted factor pattern and structure matrixes are available. The conclusion is that, although the structure of personality is more evident when the item parcels are considered (Cattell & Cattell, 1995; Prieto, Gouveia, & Fernández, 1996), all sixteen factors have been moderately confirmed analyzing only the items. So, it is appropriate to think of the Spanish version of 16 PF-5 as an appropriate measurement of the normal personality factors, as it has been defined by R.B. Cattell.
16PF; questionnaire; personality; construct validity
