Abbreviations: AQ = Aphasia Quotient
, BNT = Boston Naming Test, CIU = correct information unit, df = degrees of freedom, ES = effect size, ICC = intraclass correlation, RR&D = Rehabilitation Research and Development, SAQOL = Stroke and Aphasia Quality of Life (scale), SD = standard deviation, VA = Department of Veterans Affairs, WAB = Western Aphasia Battery.
All patients underwent a comprehensive assessment of language performance employing the Western Aphasia Battery  and the Boston Naming Test , yielding a global measure of aphasia (the aphasia quotient
) and scores related to speech fluency, comprehension, repetition, content, and object naming.
We found a highly significant (p<0.01) correlation between the FAST total score and the WAB Aphasia Quotient
(AQ) score, and between the GAT total score and the WAB AQ score (p<0.01).
The initial experimental sessions were conducted in the participants' homes and included administration of portions of the Western Aphasia Battery (Kertesz, 1982) necessary to obtain an aphasia quotient
(AQ), a fluency classification, an audiometric screening, and an informal 15-20 minute conversation between the participant and principal investigator.
The WAB Aphasia Quotient
score (WAB-AQ) ranged from 25.2 to 98.4 (70.2 [+ or -] 20.5), with no significant differences between participants enrolled at NU and those enrolled at the other sites (NU versus BU: t =1282, p > 0.05; NU versus JHU: t = -1.536, p > 0.05), while aphasic participants enrolled at BU showed lower WAB-AQ scores than those at JHU (t = -2.452, p = 0.021).
T was diagnosed with Wernicke's aphasia in L1, with a total aphasia quotient
of 46.6 (out of 100).
He was diagnosed with mild agrammatic aphasia on the basis of clinical testing; his Aphasia Quotient
on the Western Aphasia Battery was 85.6 .
Four major components of the aphasia quotient
are spontaneous speech, auditory verbal comprehension, repetition, and naming.
Western Aphasia Battery Aphasia Quotient
scores for each participant before therapy (Time 1), after traditional therapy and before animal-assisted therapy (AAT) (Time 2), and after AAT (Time 3).
While results showed a lack of generalization to real-word reading aloud, improvement was present in phonological processing, language function (Western Aphasia Battery Aphasia Quotient
, Boston Naming Test, Reading Comprehension Battery for Aphasia), and auditory processing (Revised Token Test).
As evidenced by his performance on the Western Aphasia Battery (WAB)  (Aphasia Quotient
= 81.6/ 100), the subject displayed a mild Broca's aphasia and relatively spared auditory comprehension in the context of nonfluent verbal output characterized by agrammatism, word retrieval failures (anomia in discourse and confrontation naming), and motor articulatory difficulty.
Increases on the WAB Aphasia Quotient
(AQ) were associated with changes in comprehension and repetition scores following training.