Verbal fluency deficits in children with specific language impairment: slow rapid naming or slow to name?

This study examined aspects of verbal fluency performance of children with Specific Language Impairment (SLI) and typically developing children matched on age and Block Design scores. While children with SLI showed deficits in verbal fluency compared to their peers, they showed the same pattern of performance on phonemic compared to semantic fluency trials. Children with SLI and normally developing children also demonstrated equivalent rates of clustering and switching, measures hypothesized to reflect aspects of frontal lobe functioning, when the overall number of exemplars was taken into account. The absence of a condition by group effect supports general processing limitation accounts of SLI, while the absence of group differences on cluster size and switches supports language-based processing accounts of SLI.