Typically developing Cantonese children mark focus with post-focus compression of duration, f0 and intensity¶

Claim · All claims
Evidence · 1 study · causal r1 · q3
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? TD children produced post-focus words with significantly shorter duration, lower mean f0 and lower intensity than broad focus words under narrow and contrastive conditions. → Chen 2026

Evidence¶

Chen 2026¶

Chen, S., Wang, B.X., Cheung, J.C.-W. et al. (2026). Lab perceptual training and robot-assisted training in improving speech prosody of autistic children. npj Science of Learning. https://doi.org/10.1038/s41539-026-00425-7

q3 · i? · causal · r1

Baseline production data from the typically developing Cantonese comparison group (23 children), analyzed with linear mixed effects models; focus condition was significant for duration, f0 and intensity (e.g., duration χ2 = 301.18; df = 6; p < 0.001). No effect size printed.

"Post-hoc comparisons showed that the TD group produced post-focus words with significantly shorter duration, lower mean f0 and intensity than the broad focus words under both narrow and contrastive conditions, whereas they only produced contrastive on-focus words with significantly longer duration and higher f0 than broad focus words."

Discussion¶

Related Claims¶

• Robot-assisted training with simulated social interaction improves autistic children's on-focus durational expansion and post-focus f0 compression — related
• Lab perceptual training improves autistic children's use of duration and intensity to mark on-focus words in speech production — related
• Autistic children receiving no training show no significant improvement in on-focus expansion of f0, duration or intensity — related
• Robot-assisted training effects on on-focus expansion are limited to contrastive focus and do not extend to narrow focus — related