An Acoustic Study of Communication Apprehension during English Oral Presentations by Japanese University Students
Bibliographic record
Abstract
This study investigated the influence of communication apprehension and anxiety in second-language (L2) learning on oral performance of Japanese university students in terms of F0 (fundamental frequency) analysis. The participants were English-major students (3 males and 6 females) who presented at an oral communication festival for university students. The F0 analysis consisted of a mean F0 and F0 range. The participants’ utterances were digitized and analysed with Praat. Participants also completed two structured closed-ended questionnaires: a Personal Report of Communication Apprehension (PRCA) and a Foreign Language Classroom Anxiety Scale (FLCAS). One subscale of PRCA is Speech Anxiety (SA) that measures apprehension in public speaking. Acoustic analysis of F0 was conducted of the utterances provided by the students and their F0 data during rehearsal and the actual performance settings. The results revealed a significant difference in mean F0 between the rehearsal and actual performance. Mean F0 was significantly correlated with SA. These results suggest that students tend to show higher speech anxiety during an actual performance setting that is also reflected by a higher speaking F0.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".