Non-verbal cognitive development and language impairment.

摘要: Background:  Specific language impairment (SLI) is currently partly defined by the presence of non-verbal IQ scores in normal range. However, not only there a debate concerning where ‘normal thresholds’ should be, but increasing information about processing deficits SLI have led some researchers to question use criteria clinical diagnosis. In particular, little known longitudinal and developmental patterns cognitive performance this population. Method:  Data from long-term follow-up study was examined 82 children at original participation as having who had measurements 7, 8, 11 14 years. Results:  Analyses revealed significant fall between 7 14 years over 20 points. This took place mainly 8 11 years still continuing 14 years. Further investigation different groups showing IQ, even after controlling for baseline measurement. These also showed significantly outcomes were performed that suggested dynamic process development. Conclusions:  findings appear be agreement with model views ‘Residual Normality’ unlikely (Karmiloff-Smith, 1998; Thomas & Karmiloff-Smith, 2002). The implications are therefore discussed relation development systems along possible mechanisms (such working memory) might interact create an profile.