This repository is the research compendium of Stefano Coretta's PhD project *Vowel duration and consonant voicing: A production study*. The compendium contains data, code, and documentation of two studies of the effect of consonant voicing on vowel duration which appear in Coretta's dissertation (*Study I: An exploratory study of the voicing effect in Italian and Polish* with the accompanying pilot on EGG data analysis, and *Study II: Compensatory aspects of the effect of voicing on vowel duration in English*). A secondary project on voicing vowel height in Italian which did not make it into the dissertation is also included here (*Vowel duration, voicing duration, and vowel height: Acoustic and articulatory data from Italian*). Each sub-study contains a `Data` component with a linked GitHub repository. The GitHub repo contains documented R data and code, and the related R data package which can be installed as any other R package. The original data (from which the R data is derived) of each `Data` component is stored in the respective OSF storage. The other components of each sub-study contain a `pre-registration` (if any) and `paper/talks` components with the respective analysis code which can be used to reproduce the results. The following papers appear in Coretta's dissertation: 1. [An exploratory study of voicing-related differences in vowel duration as compensatory temporal adjustment in Italian and Polish][1] 1. [Temporal (in)stability in English monosyllabic and disyllabic words: Insights on the effect of voicing on vowel duration][2] 1. [Longer vowel duration correlates with greater tongue root displacement: Acoustic and articulatory data from Italian and Polish][3] 1. [Assessing mid-sagittal tongue contours in polar coordinates using generalised additive (mixed) models][4] 1. [Modelling electroglottographic data with wavegrams and generalised additive mixed models][5] ## License Code is released under the MIT License, while data is released under the Creative Commons Attribution 4.0 International License. [1]: https://osf.io/quy7k/ [2]: https://osf.io/32fst/ [3]: https://osf.io/d245b/ [4]: https://osf.io/j79uw/ [5]: https://osf.io/3w8gh/