Der Erwerb der Wortproduktionskonsequenz bei Zweijährigen: ein Mittel zur Früherkennung von Aussprachestörungen?

Phonological variations in typically-developing Italian-speaking children aged 3;0-4;11

Normative data on phonological acquisition of a language are a prerequisite for evaluating children's speech sound competences. To date, these data are not sufficiently available for Italian. This study, therefore, aimed to describe the phonological development of 183 typically developing monolingual Italian-speaking children aged 3;0-4;11 (four 6-months age bands). Participants were assessed through a picture naming task, and performances analysed in terms of number of phonological variations (Tokens), Types and percentage of occurrence of patterns, and number of infrequent variants (InfrVar) as a measure of stability in speech production. Two cut-off criteria to distinguish InfrVar from phonological patterns were applied. Results showed a gradual reduction of all measures with increasing age. Twenty-two patterns generally in line with previous Italian and cross-linguistic studies were observed, with only five patterns and two phonetic distortions occurring across all age groups. Eight patterns only emerged when applying the lower cut-off criterion, while further seven patterns only occurred with very low frequency or in isolated age groups. These findings highlight the influence of the selected cut-off criterion on the identification of patterns and raise the question of whether some patterns should rather be considered InfVar. Data on younger children are still needed to clarify whether low-frequency patterns are patterns of younger typically developing children that have almost resolved in the age groups assessed. At least half of the phonological variation Tokens fell into the category of InfrVar, indicating a need to pay more attention to this so far ignored measure.

The acquisition of initial consonant clusters in German-speaking 2-year-olds

PURPOSE

The aim of this study was to explore cluster acquisition in typically developing German-speaking 2-year-olds.

METHOD

Data from four cross-sectional studies (n = 145, aged 2;00-2;11) and one eight-month longitudinal study were analysed (n = 6, aged 2;01-2;04). Two different percentages of consonant clusters correct were calculated to allow a more detailed analysis.

RESULT

Findings showed that the majority of children produced clusters, although they could not be considered to be fully acquired. Correct production significantly correlated with age. Only /gl/ and /kl/ were shown to be phonetically and phonemically acquired (75% criterion) in the older age group. Three-element clusters were acquired at the same time as 2-element clusters and /∫/-clusters were acquired to the same or larger extent as non-/∫/ clusters when fronting/backing of /∫/ was accepted. Younger children produced more reductions than simplifications but this effect was less strong for the /∫/-clusters. Developmental realisation patterns varied depending on cluster type. Inter- and intra-individual developmental patterns could be observed which changed depending on the time of testing.

CONCLUSION

Findings on cluster acquisition in 2-year-old German-speaking children revealed language-specific differences but also similarities in comparison with results from other languages. All but two children produced clusters. However, individual variation between children was high.

Phonological development of Danish-speaking children: A normative cross-sectional study

Detailed knowledge about speech development in children acquiring different languages provides important information from a clinical and a theoretical perspective: First, it provides a baseline for the evaluation of whether a child shows typical, delayed or deviant speech development. Further, differences in speech development across languages can help to understand how the phonological systems of ambient languages affects children's speech acquisition. To date, little is known about Danish. It was suggested, however, that the acquisition process might be slower for Danish-speaking children due to the "blurry" sound structure of Danish. The aim of the current study was, therefore, to investigate typical speech development in 443 Danish-speaking children, i.e. types and age of occurrence of children's phonological processes as well as on the acquisition of phones and clusters. The results showed that Danish-speaking children, in contrast to the expectations, were not delayed but advanced compared to children acquiring other languages.