The role of attention in the relationship between inspection time and IQ in children.

This study investigated the possibility that the widely reported relationship between IQ and Inspection Time (IT) in children (e.g. Nettlebeck & Young, 1990) may derive from the involvement of various aspects of attention in both IT and psychometric ability tasks. Forty-nine participants, aged approximately 8–11 years, were given a battery of tests designed to measure different aspects of attention, the Colored Progressive Matrices (CPM) intelligence test and a visual IT test. Analysis using multiple regression indicated that, although attention predicted CPM score, IT was still a significant predictor of CPM score after age and the attention measures had been partialled out, indicating that IT scores account for a unique proportion of the variance in CPM scores. Age and IT were significantly (negatively) correlated. This correlation became non-significant once the attention measures had been removed. These results are discussed in relation to previous studies. After a consideration of a number of methodological criticisms, suggestions for further research are outlined.