Glassmire David M, Jhawar Amandeep, Burchett Danielle, Tarescavage Anthony M
Department of Psychology, Patton State Hospital.
Department of Psychology, California State University.
Psychol Assess. 2017 May;29(5):500-508. doi: 10.1037/pas0000366. Epub 2016 Jul 14.
The Minnesota Multiphasic Personality Inventory-2 (MMPI-2) F(p) (Infrequency-Psychopathology) scale was developed to measure overreporting in a manner that was minimally confounded by genuine psychopathology, which was a problem with using the MMPI-2 F (Infrequency) scale among patients with severe mental illness. Although revised versions of both of these scales are included on the MMPI-2-Restructured Form and used in a forensic context, no item-level research has been conducted on their sensitivity to genuine psychopathology among forensic psychiatric inpatients. Therefore, we examined the psychometric properties of the scales in a sample of 438 criminally committed forensic psychiatric inpatients who were adjudicated as not guilty by reason of insanity and had no known incentive to overreport. We found that 20 of the 21 Fp-r items (95.2%) demonstrated endorsement rates ≤ 20%, with 14 of the items (66.7%) endorsed by less than 10% of the sample. Similar findings were observed across genders and across patients with mood and psychotic disorders. The one item endorsed by more than 20% of the sample had a 23.7% overall endorsement rate and significantly different endorsement rates across ethnic groups, with the highest endorsements occurring among Hispanic/Latino (43.3% endorsement rate) patients. Endorsement rates of F-r items were generally higher than for Fp-r items. At the scale level, we also examined correlations with the Restructured Clinical Scales and found that Fp-r demonstrated lower correlations than F-r, indicating that Fp-r is less associated with a broad range of psychopathology. Finally, we found that Fp-r demonstrated slightly higher specificity values than F-r at all T score cutoffs. (PsycINFO Database Record
明尼苏达多相人格问卷第二版（MMPI - 2）的F(p)（低频-精神病理学）量表旨在以一种受真正精神病理学干扰最小的方式来测量过度报告情况，这在严重精神疾病患者中使用MMPI - 2的F（低频）量表时是个问题。尽管这两个量表的修订版都包含在MMPI - 2重新构建版中，并用于法医情境，但尚未对法医精神病住院患者中它们对真正精神病理学的敏感性进行项目层面的研究。因此，我们在438名因精神错乱被判定无罪且无过度报告已知动机的刑事犯罪法医精神病住院患者样本中，检验了这些量表的心理测量特性。我们发现，21个Fp - r项目中的20个（95.2%）的认可率≤20%，其中14个项目（66.7%）的样本认可率低于10%。在不同性别以及患有情绪和精神障碍的患者中均观察到类似结果。样本中认可率超过20%的一个项目的总体认可率为23.7%，且不同种族群体的认可率有显著差异，西班牙裔/拉丁裔患者的认可率最高（43.3%）。F - r项目的认可率总体上高于Fp - r项目。在量表层面，我们还检验了与重新构建临床量表的相关性，发现Fp - r的相关性低于F - r，这表明Fp - r与广泛的精神病理学的关联较小。最后，我们发现，在所有T分数临界值下，Fp - r的特异性值略高于F - r。（PsycINFO数据库记录）
