Main concepts for two picture description tasks: An addition to.
Jessica D Richardson, Sarah Grace Hudspeth Dalton
PMID 32952259WHAT IT FOUND
Checklists now exist for two AphasiaBank picture tasks used to assess aphasia discourse, each with 10 main concepts at a 33% threshold.
Healthy controls could score up to 30, and no age-group differences were found.
Key findings
01Ten main concepts met the 33% threshold for each of the two picture tasks.
02The maximum main concept composite score for each task was 30.
03No significant differences were found in main concept codes or composite scores among the age groups for either narrative.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The sample was healthy controls only, so the report does not provide norms or accuracy data for people with aphasia. Although 92 transcripts were used, each age group had only 23 participants, below the recommended more than 50 per group for stratification. The sample had more females than males and was not racially or ethnically diverse, so it may not fit all populations. MCA coding ignores some relevant statements, meta comments, and gestures, so it does not capture all communication. The checklists are based on English monolingual North American control discourse, and bilingual or culturally diverse speakers may not use the same concepts.
The easy way to misread this
Do not treat these checklists as a validated aphasia test or a treatment outcome measure. They were built from 92 healthy control transcripts, and the paper did not show that the scores diagnose aphasia or track recovery.