About this app
The Sydney Language Battery (SYDBAT) is a short but comprehensive measure of expressive and receptive language abilities. The SYDBAT was primarily developed to assist clinicians in differentiating the various forms of primary progressive aphasia (PPA). Used in conjunction with other cognitive tests, this freely-accessible tool can be used in any clinical setting to assist with the profiling of language disturbance. The SYDBAT comprises four subtests: 1) Naming 2) Repetition 3) Comprehension 4) Semantic Association Each subtest uses the same multi-syllabic (at least 3 syllables), imageable nouns. The items are ordered into three levels of difficulty, based on decreasing word frequency. Detailed administration and scoring guidelines are provided with the test. Cut-off scores to detect impaired performances have been published to aid interpretation.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 1, 2026 · 3:30 PM Free