The purpose of the current study is to document phonological change from a multidimensional perspective for a 3-year-old boy with phonological disorder by comparing three measures: (1) accuracy of consonant productions, (2) dynamic assessment, and (3) acoustic analysis. The methods included collecting a sample of the targets /s, [image omitted],…

This study uses the technique of electropalatography to investigate lingualpalatal contact patterns during the production of the consonants /t, k, s, x, n, l, / by four Greek speakers with profound hearing impairment and with differences in the intelligibility of their speech. The study provides a detailed description of their tongue-palate…

This paper investigates spatio-temporal variability during the production of the lingual consonants /t, k, s, x, n, l, "r"/ by four Greek speakers with profound hearing impairment and with differences in the intelligibility of their speech. It examines important factors that have been documented to influence intelligibility, i.e.…

Current accounts of spoken production debate the extent to which speakers plan ahead. Here, we investigated whether the scope of phonological planning is influenced by changes in time pressure constraints. The first experiment used a picture-word interference task and showed that picture naming latencies were shorter when word distractors shared…

It is well-accepted that the jaw plays an active role in influencing vowel height. The general aim of the current study is to further investigate the extent to which the jaw is active in producing consonantal distinctions, with specific focus on coronal consonants. Therefore, tongue tip and jaw positions are compared for the German coronal…

Several recent experiments indicate that, when learning words, children are not as sensitive to phonemic differences (e.g., /d/ vs. /t/) as they are in discrimination tasks [Pater, J., Stager, C. L., & Werker, J. F. (2004). "The perceptual acquisition of phonological contrasts." "Language," 80, 384-402; Stager, C. L., & Werker, J. F. (1997).…

This paper presents a four-subject study that examines the relative influence of syllable position and stress, together with vowel context on the colouring of the dark-l characteristic of speakers of General American English. Most investigators report lighter /l/ tokens in syllable onsets and darker tokens in coda positions. The present study…

This study examined the speech perception, speech, and language developmental progress of 25 children with hearing loss (mean Pure-Tone Average [PTA] 79.37 dB HL) in an auditory verbal therapy program. Children were tested initially and then 21 months later on a battery of assessments. The speech and language results over time were compared with…

Consonant mastery is one of the most widely used metrics of typical phonological acquisition and of phonological disorder. Two fundamental methodological questions concerning research on consonant acquisition are (1) how to elicit a representative sample of productions and (2) how to analyse this sample once it has been collected. This paper…

Background: Electropalatographic investigations have revealed that a proportion of children with articulation/phonological disorders exhibit undifferentiated lingual gestures, whereby the whole of the tongue contacts the palate simultaneously during lingual consonant production. These undifferentiated lingual gestures have been interpreted to…

The relations among articulation accuracy, speech perception, and phoneme awareness were examined in a sample of 97 typically developing children ages 48 to 66 months. Of these 97 children, 46 were assessed twice at ages 4 and 5 years. Children completed two tasks for each of the three skills, assessing these abilities for the target phoneme /r/…

This study was designed to investigate the development of articulatory timing from mid-childhood to late adolescence. Productions of sentences containing /t/, /l/, /s/, and /k/ were produced by 48 children and adults (aged 6-38 years) and captured using the Reading Electropalatography3 (EPG3) system. Mean duration of the sentences and the…

Jaw movement patterns were examined longitudinally in a 3-year-old male with childhood apraxia of speech (CAS) and compared with a typically developing control group. The child with CAS was followed for 8 months, until he began accurately and consistently producing the bilabial phonemes /p/, /b/, and /m/. A movement tracking system was used to…

Purpose: To determine if listeners with normal hearing and listeners with sensorineural hearing loss give different perceptual weightings to cues for stop consonant place of articulation in noise versus reverberation listening conditions. Method: Nine listeners with normal hearing (23-28 years of age) and 10 listeners with sensorineural hearing…

Previous research has found developmental decreases in temporal variability in speech. Relatively less work has examined spectral variability, and, in particular, variability in consonant spectra. This article examined variability in productions of the consonant/s/by adults and by 3 groups of children, with mean ages of 3;11 (years; months), 5;04,…