Singleton consonant onset acquisition in monolingual Granada Spanish-speaking preschoolers with typical versus protracted phonological development: Impacts of word structure and feature constraints.

While consonant acquisition clearly requires mastery of different articulatory configurations (segments), sub-segmental features and suprasegmental contexts influence both order of acquisition and mismatch (error) patterns (Bérubé, Bernhardt, Stemberger & Ciocca, 2020). Constraints-based nonlinear phonology provides a comprehensive framework for investigating the impact of sub- and suprasegmental impacts on acquisition (Bernhardt & Stemberger, 1998). The current study adopted such a framework in order to investigate these questions for Granada Spanish. Single-word samples of monolingual preschoolers in Granada (29 typically developing; 30 with protracted phonological development) were transcribed by native Spanish speakers in consultation with an international team. Beta regression analyses showed significant effects of age, developmental group, and word structure variables (word length, stress, position of consonants and syllables within the word); salience, markedness and/or frequency across the phonological hierarchy accounted for many patterns. The study further demonstrates the impacts of sub- and suprasegmental constraints of the phonological system on consonant acquisition.

Prenatal mucopolysaccharidosis VII: A novel pathogenic variant identified in GUSB gene.

Clinical exome sequencing is a powerful approach to overcome the wide clinical and genetic heterogeneity of mucopolysaccharidosis. These data could be useful for prenatal diagnosis of MPS VII, genetic counseling, and preimplantation genetic testing.

Word-initial rhotic clusters in Spanish-speaking preschoolers in Chile and Granada, Spain.

The current paper describes Spanish acquisition of rhotic onset clusters. Data are also provided on related singleton taps/trills and /l/ as a singleton and in clusters. Participants included 9 typically developing (TD) toddlers and 30 TD preschoolers in Chile, and 30 TD preschoolers and 29 with protracted phonological development (PPD) in Granada, Spain. Results showed age and developmental group effects. Preservation of cluster timing units preceded segmental accuracy, especially in stressed syllables. Tap clusters versus singleton trills were variable in order of mastery, some children mastering clusters first, and others, the trill. Rhotics were acquired later than /l/. In early development, mismatches (errors) involved primarily deletion of taps; where substitutions occurred, [j] frequently replaced tap. In later development, [l] more frequently replaced tap; where taps did occur, vowel epenthesis sometimes occurred. The data serve as a criterion reference database for onset cluster acquisition in Chilean and Granada Spanish.

A Spanish pilot investigation for a crosslinguistic study in protracted phonological development.

A crosslinguistic study is underway concerning children's protracted phonological development (i.e. speech sound disorders). The current article reports pilot Spanish data for this study from two 4-year-old boys with protracted phonological development. The purposes of the pilot study were to: (1) develop and evaluate a word list for elicitation that could be used across Spanish dialects and that sufficiently sampled Spanish word lengths, stress patterns, word shapes and phonemes; and (2) to derive hypotheses for the larger study, based on patterns found in these children's speech, and a review of the literature. The two speakers showed some developmental patterns reported for other languages (e.g. constraints on production of liquids and word-initial consonants in unstressed syllables) but also patterns that may reflect Spanish phonological inventories, allophony and frequencies. These data helped consolidate the Spanish word list for elicitation and led to questions for the ongoing study concerning word structure, multisyllabic words, liquids, fricatives and vowel sequences.