Hierarchical clustering of 15 language comprehension abilities in verbal individuals with language deficits yields three distinct ability clusters: command, modifier, and syntactic¶
Claim · All claims
Evidence · 1 study · associationalr1·q2
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
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This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? In 17,848 verbal participants with language deficits, UHCA of 15 parent-rated language comprehension abilities produced three clusters with inter-cluster distances significantly larger than the distances between subclusters. → Vyshedskiy 2024
Evidence¶
Vyshedskiy 2024¶
Vyshedskiy, A., Venkatesh, R., Khokhlovich, E. & Satik, D. (2024). Three mechanisms of language comprehension are revealed through cluster analysis of individuals with language deficits. npj Science of Learning. https://doi.org/10.1038/s41539-024-00284-0
q2 · i? · associational · r1
Data-driven Unsupervised Hierarchical Cluster Analysis (Ward's method, Euclidean distance) of 15 parent-reported abilities in 17,848 verbal participants aged 4 to 22. The dendrogram (Fig. 1a) showed three clusters "signi ficantly larger than the distances between subclusters"; a hyperactivity control item clustered separately.
"Three clusters have inter- cluster distances that are signi ficantly larger than the distances between subclusters."
Discussion¶
Related Claims¶
- Principal component analysis independently separates command, modifier, and syntactic language comprehension items — related
- Parent-reported language comprehension abilities in autistic individuals cluster into three distinct mechanisms: Command, Modifier, and Syntactic — possibly the same claim (merge candidate)
- Clustering participants independently yields three language-comprehension phenotypes present at 44.7%, 25.0%, and 30.3% of the sample — related
- Joint clustering of receptive and expressive items yields six distinct clusters, supporting independent receptive and expressive dimensions — related
- Syntactic-phenotype prevalence decreases and command-phenotype prevalence increases with autism severity — related
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