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Aphasia is a devastating brain disorder, detrimental for medical care and social interaction. The early diagnosis of language disorders and accurate identification of patient-specific deficits are crucial for patients' care, as aphasia rehabilitation is more effective when focused on patient-specific language deficits. We developed the Core Assessment of Language Processing (CALAP), a new scale combining screening and detailed evaluation to rapidly diagnose and identify patient-specific language deficits. This scale is based on a model of language processing distinguishing between the comprehension, production, and repetition modalities, and their different components: phonology (set of speech-sounds), morphology (how the sounds combine to form words), lexicon (words), syntax (how words combine to form sentences), and concept (semantic knowledge). This scale was validated by 189 participants who underwent the CALAP, and patients not unequivocally classified as without aphasia by a speech-language pathologist underwent the Boston Diagnosis Aphasia Evaluation as the gold standard. CALAP-screening classified patients with and without aphasia with a sensitivity of 1 and a specificity of 0.72, in 3.14 ± 1.23 min. CALAP-detailed evaluation specifically assessed the language components in 8.25 ± 5.1 min. Psychometric properties including concurrent validity, internal validity, internal consistency and interrater reliability showed that the CALAP is a valid and reliable scale. The CALAP provides an aphasia diagnosis along with the identification of patient-specific impairment making it possible to improve clinical follow up and deficit-based rehabilitation. It is a short and easy-to-use scale that can be scored and interpreted by clinicians nonexpert in language, in patients with fatigue and concentration deficits. (PsycINFO Database Record (c) 2019 APA, all rights reserved)





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