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Part of
Perspectives on Phonological Theory and Development: In honor of Daniel A. Dinnsen
Edited by Ashley W. Farris-Trimble and Jessica A. Barlow
[Language Acquisition and Language Disorders 56] 2014
► pp. 53–70

Sibling rivalry

Comparing phonological similarity between twin and non-twin siblings

| Arizona State University
| Bowling Green State University

Ingram, Dubasik, Liceras & Fernández Fuertes (2011) developed a measure of phonological similarity that compares phonological samples across 4 levels (whole words, word shapes (syllables), consonant inventories, consonant correctness), using 9 measures in total. The present study used the similarity measure to compare 4 dyads of children: identical twins, non-identical twins, non-twin siblings born 2 years apart, non-twin siblings born 5 years apart. Results indicated that phonological similarity decreased across the 4 dyads, providing evidence for genetic and environmental effects. The differences across dyads varied by phonological level, thus, indicating the importance of conducting multi-dimensional phonological analyses.

Published online: 29 April 2014
DOI logo
https://doi.org/10.1075/lald.56.07ing
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