[en] Arbisi, and Ben-Porath (1995, 1998) in their study with a clinical sample propose a new scale in the MMPI-2 to be able to detect to the simulators. The results contributed by this authors on this new scale of validity, the Psychiatric scale Fp, allows to distinguish, among the psychiatric patients, those that respond honestly of those that try to exaggerate its symptoms in a deliberate way. The objective of our investigation consists on to experience this scale Fp with different types of participants in the recent Spanish adaptation and to reflect its singular behavior. The study composes it a total number of participants of 3.035 subject of which 1.723 are subject considered as "normal" (group "normal") that respond with sincerity to the questionnaire of the MMPI-2 (it forms standard); a total of 561 participants is subject considered as "clinical" (group "clinical") that respond equally in a sincere and honest way. To a group of 269 fellows "normal" they have been instructed so that they show a negative image deliberately of themselves (group "bad image") and to other 282 participants, equally normal, they were instructed so that they showed a positive image of itself (group "good image"); finally a group of 200 participants, using diverse strategies, they answered to the questionnaire without assisting to the information contained in the articles (group "Rtas. Inconsistencies"). The results demonstrate the sensibility of this Scale Fp of Arbisi, and Ben-Porath to the detection of those individuals that, in a voluntary and coherent way, they falsify their answers to the MMPI-2 trying to present their more unfavorable image at the same time that we observe difficulties to discriminate against sufficiently the fellows that try to present a good image at least of themselves of those other ones that you/they present clinical problems, among the males.

[es] Arbisi, y Ben-Porath (1995, 1998) en su estudio con una muestra cl?nica proponen una nueva escala en el MMPI-2 para poder detectar a los simuladores. Los resultados aportados por dichos autores sobre esta nueva escala de validez, la escala Psiqui?trica Fp, permite distinguir, entre los pacientes psiqui?tricos, aquellos que responden honestamente de los que intentan exagerar sus s?ntomas de forma intencionada. El objetivo de nuestra investigaci?n consiste en experimentar esta escala Fp con diferentes tipos de participantes en la reciente adaptaci?n espa?ola y reflejar su singular comportamiento. El estudio lo compone un n?mero total de participantes de 3.035 sujetos de los cuales 1.723 son sujetos considerados como normales (grupo normal ) que responden con sinceridad al cuestionario del MMPI-2 (forma est?ndar); un total de 561 participantes son sujetos considerados como cl?nicos (grupo cl?nico ) que responden igualmente de forma sincera y honesta. A un grupo de 269 sujetos normales se les ha instruido para que muestren intencionadamente una imagen negativa de s? mismos (grupo mala imagen ) y a otros 282 participantes, igualmente normales, se les instruy? para que mostraran una imagen positiva de s? mismo (grupo buena imagen ); por fin un grupo de 200 participantes, utilizando diversas estrategias, contestaron al cuestionario sin atender a la informaci?n contenida en los ?tems (grupo Rtas. Inconsistentes ). Los resultados demuestran la sensibilidad de esta Escala Fp de Arbisi, y Ben-Porath a la detecci?n de aquellos individuos que, de forma voluntaria y coherente, falsean sus respuestas al MMPI-2 intentando presentar su imagen m?s desfavorable al mismo tiempo que observamos dificultades para discriminar suficientemente a los sujetos que intentan presentar una buena imagen de s? mismos de aquellos otros que presentan problemas cl?nicos, al menos entre los varones.