Profy practice shows larger observed pronunciation-intelligibility improvement than elicited imitation, with non-overlapping pre/post confidence intervals¶
Claim · All claims
Evidence · 1 study · designr2·q2
Currency · newest study 2025 · checked against its sources 2026-10-18 (automated, 1 of 1 entry) · 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
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? In an experiment with 10 Japanese learners of English rated by five American raters, Profy showed a larger observed improvement in pronunciation intelligibility than elicited imitation, and unlike elicited imitation its pre- and post-practice confidence intervals did not overlap. → Kazuki Kawamura 2025
Evidence¶
Kazuki Kawamura 2025¶
Kazuki Kawamura. (2025). AI-Guided Learning: Research on Knowledge and Skill Acquisition Support Methods Using Deep Learning Audio-Video Processing Techniques. Doctoral dissertation, The University of Tokyo. https://arxiv.org/abs/2608.08990 doi:10.48550/arxiv.2608.08990
q2 · i? · design · r2
Small-n experiment with 10 Japanese learners of English; post-practice speech was rated for intelligibility by five American raters and compared against an elicited-imitation baseline. The improvement is described as observed, with non-overlapping confidence intervals for Profy only; no effect size printed.
"In an experiment with 10 Japanese learners of English evaluated by five American raters, Profy showed a larger observed improvement in pronunciation intelligibility than elicited imitation; unlike elicited imitation, its pre- and post-practice confidence intervals did not overlap."
Discussion¶
Related Claims¶
- CAPT software shows promising results for segmental pronunciation, while prosodic features and fluency still require further research and development — the general claim this finding bears on, with the studies behind it
- Explicit pronunciation instruction improves controlled production of targeted sounds and prosody, with smaller and less certain gains in spontaneous speech — a broader claim this one bears on
- Guided ASR practice improves overall pronunciation accuracy of Korean EFL learners more than ordinary classroom pronunciation practice alone — related
- Amount of ASR practice (days per week, session length) showed no observable difference in pronunciation improvement — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
profy-intelligibility-gain-over-elicited-imitation |
title |
Profy practice shows larger observed pronunciation-intelligibility improvement than elicited imitation, with non-overlapping pre/post confidence intervals |
description |
Profy practice shows larger observed pronunciation-intelligibility improvement than elicited imitation, with non-overlapping pre/post confidence intervals |
status |
review |
evidence_strength |
weak |
newest_evidence |
2025 |
source_checked |
2026-10-18 |
generated |
by process:wiki-ingest on 2026-10-10 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — kazuki-kawamura-2025 |
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