Correspondence between consonant inventories obtained using modified naturalistic listening in real time (NLRT) and parent report.

OBJECTIVE: The current study examined the correspondence between consonant inventories obtained using the modified NLRT approach and parent report. DESIGN: Prospective comparative study. SETTING: Multisite institutional. PARTICIPANTS: Participants included 70 children with repaired CP + L (mean age = 16 months) who were participating in the multicenter study. PROCEDURES: Parents of participants were asked to record approximately two hours of their child's vocalizations/words at home using a Language ENvironmental Analysis (LENATM) recorder. Four ten-minute audio-recorded samples of vocalizations were extracted from the original recording for each participant and analyzed for size of consonant inventory. Parent reported consonant inventory was compared to coder identified consonant inventory. Coders identified an in-inventory consonant using two different criteria: 2+ tokens of each consonant were required in the first analysis and 10+ tokens of each consonant were required in the second analysis. RESULTS: Coder identified consonant inventory was larger (mean = 7.90) than that reported by parents (mean = 6.06) when a minimum of two tokens per consonant was required for inclusion of a consonant in inventory, while the inventory transcribed by coders was smaller (mean = 4.46) than that reported by parents when inclusion criteria required a minimum of ten tokens per consonant. CONCLUSIONS: Although the mean number of consonants in inventory between coders and parents was slightly closer using the 10+ versus 2+ criterion for consonant inclusion, the difference was not significant enough to recommend one protocol over the other.

Stop Consonant Production in Children with Cleft Palate After Palatoplasty.

The current study examined stop consonant production in children with cleft lip and/or palate (CP ± L) 2-6 months following palatal surgery.Prospective comparative study.Multisite institutional.Participants included 113 children with repaired CP ± L (mean age = 16 months) who were participating in the multicenter CORNET study.Parents of participants were asked to record approximately two hours of their child's vocalizations/words at home using a Language ENvironmental Analysis (LENATM) recorder. Four ten-minute audio-recorded samples of vocalizations were extracted from the original recording for each participant and analyzed for presence of oral stop consonants. A minimum of 100 vocalizations were required for analysis.Preliminary findings indicate that at least one oral stop was evident in the consonant inventory for 95 of the 113 children (84%) at the time of their post-surgery 16-month recording, and 80 of these children (71%) were producing two or more different stops. Approximately 50% of the children (57/113) produced the three voiced stops, and eight of the children (7%) were producing all six stop consonants.The findings of this study suggest that the majority of children with repaired CP ± L from English-speaking homes are producing oral stops within six months following palatal surgery. Similar to same-age children without CL ± P, voiced stops were more frequently evident in the children's inventories than voiceless stops. In contrast to findings of previous reports suggesting place of articulation differences, a somewhat comparable percentage of children in this study produced voiced bilabial, alveolar, and velar stops.