¿Difiere la capacidad de clasificación de respuestas simuladas de la escala de f del mmpi-2 cuando se contrasta con un grupo control y con la población normativa? una revisión meta-analítica

Abstract

In psychological injury assessment, forensic psychologist is mandated to make a differential diagnosis of malingering, being the MMPI-2’ F Scale the reference psychometric measurement for this aim. Previous meta-analytical reviews have found an effect size for the discrimination of the F Scale between malingered responses and nonclinical controls (forensic task implies the discrimination between simulators and healthy respondents) of 4.05, and of 2.21 between malingered responses and patient groups. Nevertheless, these findings rest on two relevant gaps: mean effect size was not weighted by sampling error or the inverse of the variance, and the effect sizes were computed in contrast to control groups that probably are not matched to the normative population which is used as contrast in forensic evaluation. As for this, a new revision of the literature was performed localizing 51 primary studies from which 90 effect sizes were computed. The results exhibited that the F Scale discriminates between malingered and honest responses as in contrast to the control group of the primary studies, d = 0.44[0.39, 0.49], as in contrast to the normative sample, d = 0.70[0.63, 0.77], but being in the latter significantly higher effective. The practical implications for the forensic psychological evaluation and the future research are discussed.