Table 3: BDAE individual percentiles.

Type of aphasia
Broca Total Conduction Total
BDAE Subtests LM DB ZH GD
Severity Rating 20 90 55 60 90 75
Conversation/Expository Speech Simple social responses 50 100 75 50 100 75
Fluency Articulation rating 30 80 55 40 70 55
Phrase length 20 30 25 50 70 60
Melodic line 20 60 40 50 60 55
Grammatical form 20 80 50 70 100 85
Auditory Comprehension Word discrimination 70 100 85 70 100 85
Body-part identification 60 90 75 70 90 80
Commands 40 80 60 70 90 80
Complex ideational material 30 80 55 60 90 75
Naming Responsive naming 40 100 70 80 100 90
Confrontation naming 50 90 70 50 90 70
Animal naming 70 90 80 70 90 80
Oral Reading Word reading 60 90 75 60 90 75
Oral sentence reading 60 85 72.5 70 90 80
Repetition Repetition of words 40 90 65 40 90 65
High-probability 50 70 60 30 70 50
Low-probability 40 80 60 40 80 60
Paraphasia Literal 50 80 65 10 40 25
Verbal 70 90 80 60 90 75
Automatic Speech Automatized sequences 50 100 75 60 100 80
Reading Comprehension Symbol discrimination 70 70 70 70 70 70
Word recognition 80 80 80 80 80 80
Comprehension of oral spelling 70 100 85 70 90 80
Word-picture matching 60 80 70 60 80 70
Reading sentences and paragraphs 50 90 70 60 90 75
Writing Mechanics 40 80 60 50 90 70
Serial writing 50 90 70 60 80 70
Words to dictation 70 90 80 70 90 80
Sentences to dictation 70 90 80 70 70 80
Narrative writing 20 90 55 20 80 50

Note: Patients with aphasia: DB, LM, GD, ZH.