Processing and linguistic markers in young children with specific language impairment (SLI).

Thirty-two 5-year-old children with specific language impairment (SLI) and 32 chronological age (CA) controls completed 4 tasks that were considered potential positive markers for SLI. Children's performance on 2 linguistic tasks (past tense and noun plurals task) and 2 processing tasks (nonword repetition and digit recall) were examined. This approach allowed the examination of more than 1 type of marker simultaneously, facilitating both comparisons between markers and also the evaluation of combinations of markers in relation to identifying SLI. Children with SLI performed significantly worse than CA controls in all 4 marker tasks. Specificity/sensitivity analysis of the 4 marker tasks revealed nonword repetition and the past tense task to have the best overall accuracy at the 25th and 16th percentile. Finally, stepwise discriminant analysis revealed nonword repetition and past tense marking to be the best markers for identifying young children with SLI.