Trajectories of faithfulness in child-specific phonology
Why this work is in the frame
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Bibliographic record
Abstract
Abstract This paper provides new evidence and analysis of gradual and U-shaped phonological learning. Using a rich longitudinal corpus from Trevor (Compton & Streeter 1977, Pater 1997 b ) we demonstrate that some of Trevor's consonant harmony follows a statistically significant U-shaped trajectory, in contrast to the more typical S-shaped progression of his complex onsets. We then analyse these two developmental paths using an OT model of phonological acquisition (Hayes 2004, Prince & Tesar 2004, Tessier 2007, 2009), in which the learner's variation within and across stages is the effect of stored old productions rather than a variable grammar. The decrease in Trevor's faithfulness to place of articulation due to consonant harmony is attributed to the induction of a new constraint during the course of learning. Our analysis is paired with a computational implementation, showing how competition between old forms and the current grammar allows the model to derive both S-shaped and U-shaped patterns.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.009 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it