| Sumario: | This study provides a systematic description of French consonant acquisition in a large cohort of pre-school aged children: 156 children aged 20-53 months participated in a picture-naming task. Five analyses were conducted to study consonant acquisition: (1) consonant inventory, (2) consonant accuracy, (3) consonant acquisition, (4) a comparison of consonant inventory to consonant acquisition, and (5) a comparison to English cross-sectional data. Results revealed that more consonants emerge at an earlier age in word initial position, followed by medial position, and then word final position. Consonant accuracy underwent the greatest changes before the age of 36 months, and achieved a relative plateau towards 42 months. The acquisition of consonants revealed that four early consonants were acquired before the age of 36 months (i.e., /t, m, n, z/); 12 intermediate consonants were acquired between 36 and 53 months (i.e., /p, b, d, k, [Formula: see text], , f, v, [Formula: see text], l, w, /); and four consonants were acquired after 53 months (/s, , [integ], j/). In comparison to English data, language specific patterns emerged that influence the order and pace of phonological acquisition. These findings highlight the important role of language specific developmental data in understanding the course of consonant acquisition.
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