Bender scores and the horse as a distinct item on object assembly of the WISC.

This exploratory study investigated the relationship between two measures of perceptual-motor problems. Ratios derived from the Object Assembly subtest of the WISC with errors greater than 1 SD on the Bender test using Koppitz' scoring system were compared. The sample of 66 white middle-class children was 6 to 11 yr. old. The particular ratio studied was statistically significantly associated with the Bender, whereas ratios of other Object Assembly items were not. The Horse ratio was also significantly associated with the presence of learning problems shown in children's files.