Melbourne School of Psychological Sciences, University of Melbourne, Parkville, Victoria, Australia.
Department of Clinical Neurosciences, St. Vincent's Hospital, Fitzroy, Victoria, Australia.
Arch Clin Neuropsychol. 2023 Nov 22;38(8):1646-1658. doi: 10.1093/arclin/acad035.
The 10 core subtests of the Wechsler Adult Intelligence Scale-IV (WAIS-IV) suffice to produce the 4 index scores for clinical assessments. Factor analytic studies with the full complement of 15 subtests reveal a 5-factor structure that aligns with Cattell-Horn-Carroll taxonomy of cognitive abilities. The current study investigates the validity of 5-factor structure in a clinical setting with reduced number of 10 subtests.
Confirmatory factor analytic models were fitted to a clinical neurosciences archival data set (n_Male = 166, n_Female = 155) and to 9 age-group samples of the WAIS-IV standardization data (n = 200 for each group). The clinical and the standardization samples differed as (a) the former comprised scores from patients, aged 16 to 91, with disparate neurological diagnosis whereas the latter was demographically stratified, (b) only the 10 core subtests in the former but all 15 subtests in the latter were administered, and (c) the former had missing data, but the latter was complete.
Despite empirical constraints to eliciting 5 factors with only 10 indicators, the well-fitting, 5-factor (acquired knowledge, fluid intelligence, short-term memory, visual processing, and processing speed) measurement model evinced metric invariance between the clinical and standardization samples.
The same cognitive constructs are measured on the same metrics in every sample examined and provide no reason to reject the assumption that the 5 underlying latent abilities of the 15 subtest version in the standardization samples can also be inferred from the 10 subtest version in clinical populations.
韦氏成人智力量表第四版（WAIS-IV）的 10 项核心分测验足以产生 4 项临床评估的指标分数。对完整的 15 项分测验进行因子分析研究，揭示了与认知能力的卡特尔-霍恩-卡罗尔分类学相一致的 5 因素结构。本研究在临床环境中使用较少的 10 项分测验，调查了 5 因素结构的有效性。
对临床神经科学档案数据集（男性 n=166，女性 n=155）和 WAIS-IV 标准化数据的 9 个年龄组样本（每组 n=200）进行验证性因子分析模型拟合。临床和标准化样本不同，因为：（a）前者包括来自年龄在 16 至 91 岁的患者的分数，他们具有不同的神经诊断，而后者则在人口统计学上分层；（b）前者仅进行 10 项核心分测验，而后者进行所有 15 项分测验；（c）前者存在缺失数据，但后者是完整的。
尽管仅用 10 个指标得出 5 个因素的实证限制，但拟合良好的 5 因素（获得的知识、流体智力、短期记忆、视觉处理和处理速度）测量模型在临床和标准化样本之间表现出度量不变性。
在每个检查的样本中，都以相同的度量来测量相同的认知结构，并且没有理由拒绝这样的假设，即标准化样本中 15 项分测验版本的 5 个潜在潜在能力也可以从临床人群中的 10 项分测验版本推断出来。
