The development of speech output processing skills in Greek-speaking children.

There is a growing body of literature on phonological development in Greek-speaking children, either typically developing (TD) or with speech sound disorders (SSD). In this paper, a cross-sectional longitudinal approach was used to investigate the development of speech output processing skills in TD Greek-speaking preschool-aged children. Moreover, a group of Greek-speaking children with SSD were assessed to identify potential loci of impairment in atypical development. The developmental study involved two groups: group 1 (n = 16) aged 3;0-3;5 years and group 2 (n = 22) aged 4;6-5;0 years, assessed at three assessment points six months apart. Children with SSD (n = 15) aged 5;6-6;0 years were assessed to be compared with performance of group 2 TD children (at the third assessment point). Assessment tasks included (a) a picture naming task, (b) a task of real word repetition and (c) a task of nonword repetition. A strong time effect was found in both groups of TD children in the development of speech output processing abilities. Performance accuracy was higher on tasks including real words than nonwords; children performed more accurately on repetition rather than spontaneous naming of real words; repetition accuracy on 2-3 syllables items was significantly better than on 4-5 syllables items. Children with SSD were outperformed by TD children of the same age in all assessment tasks; lexicality and word length effect were found in the clinical group. Findings from the present study may be used as a starting point to diagnose children with speech production difficulties in Greece.