This study compared picture-naming ability of 66 children (ages 4:3 to 9:7), half with expressive-only language deficits (SLI-exp) and half with receptive and expressive language (SLI-mix) deficits, with 66 children with no language impairment.Specific language impairment (SLI) children made more errors than controls and SLI-exp children made more phonologically based errors, while SLI-mix children made more semantically based errors. (Author/DB)