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This project provides the stimuli, data, and analysis script for the Frontiers in Communication manuscript titled "Contextual influences on phonetic categorization in school-aged children," submitted by Campbell, McSherry, and Theodore. The stimuli ( consisted of three 15-step VOT continua including a velar continuum (*goal* - *coal*) at a fast speaking rate, a velar continuum (*goal* - *coal*) at a slow speaking rate, and a labial continuum at a slow speaking rate (*bowl* - *pole*). Details regarding the methods for constructing these stimuli are provided in the manuscript. Filenames for the stimuli contain identifiers for speaking rate (fast vs. slow), place of articulation (labial vs. velar), and continuum step (01 - 15). The "T2" identifier at the beginning of each filename refers to the talker used to create these continua. Two analysis folders are provided, reflecting the analysis procedures for the initial submission ( and the final submission ( In the initial submission, performance on the phonetic identification task was analyzed using a curve-fitting procedure in which performance was quantified by the parameters of psychometric functions relating VOT to phonetic identification. Based on reviewer feedback, the final analyses used GLMMs for trial-level responses. The results converged across the analysis methods, and we provide access to both approaches here, should they be of interest to the community. Each analysis folder contains a README file that provides information regarding the structure of the folder contents and the vector structure of the raw data file in each analysis folder. The analysis scripts are heavily annotated, but don't hesitate to reach out to me (; if you have any questions.
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