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Fricatives, and especially sibilants, are very frequently misarticulated by speakers with hearing loss. Misarticulations can result in phonemic contrast weakening or loss, compromising intelligibility. The present study focuses on the examination of acoustic characteristics of the Greek alveolar fricative /s/, an articulatorily demanding sound, produced by young adult speakers with profound hearing impairment and with normal hearing. An array of variables was examined using mixed-effects and random forest models aiming to assess the effectiveness of various measures in differentiating hearing-impaired and normal-hearing /s/ production. Significant differences were found in spectral and amplitude measures, but not in temporal measures. In hearing-impaired speech, spectral slope and RMS amplitude had significantly lower values, indicating a more distributed spectrum, suggestive of decreased flow velocity through the fricative constriction. Also, a trend for concentration of energy at lower frequencies was observed suggesting more posterior fricative articulation than normal. Moreover, measures capturing the variation of frequency and amplitude over time revealed different patterns of sibilance development across time than normal, denoting the production of a less well-formed or less sibilant /s/ by speakers with hearing impairment. The investigation of contextual effects on /s/ in hearing-impaired speech showed increased spectral variance, negative skewness and lower kurtosis in the labial (rounded) context /u/ in relation to the nonlabial contexts /i/ and /a/, indicating a more diffuse, less compact spectrum with concentration at high frequencies. Findings are discussed in relation to previous literature on fricative production by speakers with hearing impairment and normal hearing in Greek and other languages. [ABSTRACT FROM AUTHOR]

Hearing loss affects both speech perception and production with detrimental effects on various speech characteristics including coarticulatory dynamics. The aim of the present study is to explore consonant-to-vowel (C-to-V) and vowel-to-vowel (V-to-V) coarticulation in magnitude, direction and temporal extent in the speech of young adult male and female speakers of Greek with normal hearing (NH) and hearing impairment (HI). Nine intelligible speakers with profound HI, using conventional hearing aids, and five speakers with NH produced /pV1CV2/ disyllables, with the point vowels /i, a, u/ and the consonants /p, t, s/, stressed either on the first or the second syllable. Formant frequencies F1 and F2 were measured in order to examine C-to-V effects at vowel midpoint and V-to-V effects at vowel onset, midpoint and offset. The acoustic and statistical analyses revealed similarities but also significant differences regarding coarticulatory patterns of the two groups. Interestingly, prevalence of anticipatory coarticulation effects in alveolar contexts was observed for speakers with HI. Findings are interpreted on account of possible differences in articulation strategies between the two groups and with reference to current coarticulatory models. [ABSTRACT FROM AUTHOR]

The article explores the long-term effectiveness of in-service teacher training courses for English as a Foreign Language (EFL) teachers in the Greek educational context. It presents the results of a questionnaire designed and issued to teacher-trainees a year after the completion of 60-hour courses. The questionnaire assessed, among others, (a) teacher trainees' beliefs regarding the relevance of the knowledge acquired to their individual needs, (b) the extent to which they used the materials provided in the course, and (c) the usefulness of the subjects offered. The data are discussed in relation to strategies for optimising teacher training services and implications are drawn for the implementation of change in a broader educational context. A 'cooperative model' is proposed for the promotion of change involving active cooperation between all agents involved in the educational process and necessitating top-down and bottom-up cooperation. [ABSTRACT FROM AUTHOR]

This paper investigates spatio-temporal variability during the production of the lingual consonants /t, k, s, x, n, l, ▒/ 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. durational variability, articulatory (token-to-token) variability, and coarticulatory patterns. The technique of electropalatography was used to record tongue-palate contact patterns during consonant production in order to examine differences in articulatory variability among speakers and in V-to-C coarticulatory effects. The study reports durational differences in consonant production between speakers with hearing impairment and normal hearing and investigates the relationship between token-to-token variability in tongue-palate contact patterns and duration. The results indicate a negative relationship between duration and variability, i.e. as segmental duration decreases there is an increase in variability in tongue-palate contact patterns. Significant speaker-dependent differences in duration, articulatory variability and coarticulatory patterns are reported and are discussed in relation to differences in intelligibility among the speakers with hearing impairment. [ABSTRACT FROM AUTHOR]

In view of the increasing demand for in-service training in Greece, the Aristotle University of Thessaloniki launched English as a Foreign Language (EFL) teacher training courses, offered for the first time by a Greek state university. This paper discusses issues regarding the design and running of the courses as well as briefly presenting trainee feedback and its role in the continuous improvement of the courses. The rationale and the principles adopted in the design of the courses were in line with current approaches to teacher training. In addition, the design of the courses was based on a national survey involving a needs analysis of practising EFL teachers in Greece. The feedback received from the trainees was very positive with regard to the design and organization of the courses, the usefulness of the knowledge acquired and the fulfillment of their expectations. [ABSTRACT FROM AUTHOR]

This study uses the technique of electropalatography to investigate lingual-palatal contact patterns during the production of the consonants /t, k, s, x, n, l, [This symbol cannot be presented in ASCII format]/ 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 contact patterns and discusses some of the articulatory parameters that differentiate consonantal articulation between speakers with normal hearing and hearing impairment. Deviant patterns were found for the majority of consonants and involved substitutions, distortions, and epenthesis of segments. The segments that deviated from normal for all speakers were the fricative /s/, the palatal obstruents [c] and [ç], and the tap [[This symbol cannot be presented in ASCII format]]. Significant differences in articulatory variability during consonantal production were also found. The study discusses deviant patterns in consonant production in relation to the differences in intelligibility among the speakers and with reference to data from previous studies. [ABSTRACT FROM AUTHOR]