Principal component analysis independently separates command, modifier, and syntactic language comprehension items¶

Claim · All claims
Evidence · 1 study · associational r2 · q2
Currency · newest study 2024 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? PCA of the 15 abilities shows clear separation of the three item groups, with PC1 accounting for 35.0% and PC2 for 11.0% of the variance. → 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 · r2

Principal component analysis of the same 15 abilities in the 17,848 verbal participants; command items fell in the top left, modifier items lower middle, syntactic items top right of the PC plot (Fig. 1b). Per the figure caption, "Principal component 1 accounts for 35.0% of the variance in the data."

"The PCA (Fig. 1b) also shows clear separation between these three clusters."

Discussion¶

Related Claims¶

• Parent-reported language comprehension abilities in autistic individuals cluster into three distinct mechanisms: Command, Modifier, and Syntactic — related
• Hierarchical clustering of 15 language comprehension abilities in verbal individuals with language deficits yields three distinct ability clusters: command, modifier, and syntactic — related
• Joint clustering of receptive and expressive items yields six distinct clusters, supporting independent receptive and expressive dimensions — related