Aphasia, Dysarthria & Cognitive disorder's screenerProduct description

average 9 minutes 48 seconds (4–15 minutes)

Internal consistency (Cronbach’s α)

verbal test: 0.90, articulation test: 0.78, non-verbal test: 0.68 

1.5 SD （based on 222 healthy controls aged over 50 years） 

• Verbal section 14.8/ 16 
• Articulation section  6.2/ 7 
• Non-Verbal section  5.3/ 6

Note: Scores significantly below these benchmarks may indicate potential abnormalities.

a toothbrush, a medical thermometer, test sheets

• Test Sheet Usage: For efficiency, print pages 1 and 2 of the double-sided test sheets. Utilize the lower portion of page 2 (below the drawing task) for the writing task.
• Articulation Test Scoring: Unlike the verbal test, the articulation test requires precise pronunciation without distortion. A correct response is marked only when the pronunciation is accurate and the speech rate is appropriate.
• Patient Considerations: Discontinue any task that appears overly challenging for the patient, taking into account their psychological comfort.

We are actively working towards standardizing the English version of STAD. Our progress will be shared through conference presentations and research publications. Updates will be regularly posted on this website—please check back for the latest information.

• Diagnostic Limitations: STAD is a screening tool and does not serve as a diagnostic instrument.
• Qualitative Observations: Clinical judgment and qualitative observations are essential and should complement STAD scores.
• Non-Verbal Test Limitations: The non-verbal section comprises only six questions, which may lead to a ceiling effect. Be aware that false negatives (i.e., failing to detect an existing impairment) can occur.