Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA.
Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI 02912, USA.
J Int Neuropsychol Soc. 2019 Aug;25(7):772-776. doi: 10.1017/S1355617719000237.
The Boston Diagnostic Aphasia Examination (BDAE) is one of the most commonly used aphasia batteries. The newest edition has undergone significant revisions since its original publication in 1972, but existing evidence for its validity is lacking. We examined the construct validity of BDAE-3 and identified the factor structure of this battery.
A total of 355 people with aphasia of various types and severity completed neuropsychological evaluations to assess their patterns of language impairment. A principal component analysis with varimax rotation was conducted to examine the components of BDAE-3 subtests.
Five components accounting for over 70% of the BDAE-3 total variance were found. The five language factors identified were auditory comprehension/ideomotor praxis, naming and reading, articulation-repetition, grammatical comprehension, and phonological processing.
Our results show that the BDAE-3 demonstrates good construct validity, and certain language functions remain primary, distinct language domains (i.e., receptive vs. expressive language) across severities of aphasia. Overall, our findings inform clinical practice by outlining the inherent structure of language abilities in people with aphasia. Clinicians can utilize the findings to select core BDAE-3 tests that are most representative of their respective functions, thereby reducing the total testing time while preserving diagnostic sensitivity. (JINS, 2019, 25, 772-776).
波士顿诊断性失语症检查（BDAE）是最常用的失语症检查之一。自 1972 年首次出版以来，其最新版本经历了重大修订，但缺乏其有效性的现有证据。我们检验了 BDAE-3 的构念效度，并确定了该检查的因子结构。
共有 355 名不同类型和严重程度的失语症患者完成了神经心理学评估，以评估他们的语言障碍模式。采用主轴因子分析和方差极大旋转进行检验，以检验 BDAE-3 测验的组成部分。
发现了五个占 BDAE-3 总方差超过 70%的成分。确定的五个语言因子分别为听觉理解/意念运动操作、命名和阅读、发音重复、语法理解和语音处理。
我们的结果表明，BDAE-3 具有良好的构念效度，并且某些语言功能在不同严重程度的失语症中仍然是主要的、独特的语言领域（即接受性语言与表达性语言）。总的来说，我们的发现通过概述失语症患者语言能力的内在结构为临床实践提供了信息。临床医生可以利用这些发现选择最能代表其各自功能的核心 BDAE-3 测试，从而在保持诊断敏感性的同时减少总测试时间。（JINS，2019，25，772-776）。
