The WAIS-III and major depression: Absence of VIQ/PIQ differences
The WAIS-III and major depression: Absence of VIQ/PIQ differences
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DOI：
10.1080/13803390500246944
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发表时间：
2006-10-01
影响因子：
2.2
通讯作者：
Mann, J. John
中科院分区：
文献类型：
--
作者：
Gorlyn, Marianne;Keilp, John G.;Mann, J. John
操作智商(PIQ)相对于言语智商(VIQ)是接受韦氏成人智力量表修订(WAIS-R)的抑郁症患者的标准发现。这项研究考察了抑郁受试者在该工具的最新修订版WAIS-III上的表现，该修订版提供了更详细的智力功能子域概况。采用人口学调整的T分转换法，比较121例重度抑郁发作患者和41例健康志愿者的WAIS-III智商、指数和分量表得分。抑郁症患者的PIQ得分显著较低，但VIQ/PIQ的绝对差值和VIQ/PIQ差值的患病率和GT；1 SD在组间均无差异。指数得分的差异只存在于加工速度上，而分测验的差异只存在于计时任务上。WAIS-III得分在患有严重抑郁症和双相情感障碍的受试者之间没有差异，在有和没有忧郁症或自杀行为史的受试者之间也没有差异。结果表明，抑郁症的一般智力表现最好的特征是处理速度的缺陷，而不是整体的非语言能力，而且这种缺陷在抑郁症亚型中是一致的。
Poor Performance IQ (PIQ) relative to Verbal IQ (VIQ) is a standard finding in depressed patients administered the Wechsler Adult Intelligence Scale-Revised (WAIS-R). This study examined performance of depressed subjects on the instrument's latest revision, the WAIS-III, which provides a more detailed subdomain profile of intellectual functioning. WAIS-III IQ, index and subscale scores were compared between 121 unmedicated subjects in major depressive episode and 41 healthy volunteers, using demographically adjusted T-score conversions. Depressed subjects had significantly lower PIQ scores, but neither the absolute VIQ/PIQ difference nor prevalence of VIQ/PIQ discrepancies > 1 SD differed between groups. Index score differences were exclusively in Processing Speed, and subtest differences only on timed tasks. WAIS-III scores did not differ between subjects with major depressive and bipolar disorders, nor between subjects with and without melancholia or history of suicidal behavior. Results suggest general intellectual performance in depression is best characterized by deficits in processing speed, rather than global nonverbal abilities, and that this deficit is consistent across depression subtypes.