A Reading Level Match Study of Nonword Reading Skills in Poor Readers with Varying IQ

This study evaluated the hypothesis that poor readers are characterized by poor nonword reading skills, but that a specific deficit, as opposed to a developmental lag, in nonword reading will be found only in subjects whose reading is discrepant from intellectual ability. To test this hypothesis, we measured nonword reading skills in 93 (64 male, 29 female) third-grade poor readers and 54 (37 male, 17 female) fifth-grade poor readers (with and without reading/IQ discrepancies) who were matched to 147 (81 male, 66 female) nondisabled first graders on word identification skills. Results showed third- and fifth-grade poor readers to be significantly more impaired than word-identification level match first graders on all measures on nonword reading. These findings were not related to the verbal IQ level within the poor reader groups and, thus, provide strong evidence for a deficit in nonword reading skills that is not explained by verbal intelligence.