When only children with ADHD were considered, DF no longer was a significant predictor.
FORWARD BACKWARD DIGIT SPAN FULL
Regression analyses indicated that Full Scale IQ explained significant variance in parent ratings of attention and executive function DF emerged as a significant predictor only for one measure of attention. Once cognitive ability was controlled, no group differences emerged for Digit Span or digits forward notably, the ADHD-Predominantly Inattentive group was able to recall significantly more digits backward than the ADHD-Combined Type group. Clinical groups differed from the No Diagnosis group on cognitive ability as well as achievement. The Logical Memory subtest is available in the Fourth Edition of the Wechsler Memory Scale (WMS-IV). The results support the notion that forward and backward digit span involve different mechanisms. The sample (n=90) included children with no diagnosis and children with a range of clinical problems, including attention deficit hyperactivity disorder (ADHD). The Digit Span Forward, Backward, and Sequencing subtests are included in the Wechsler Adult Intelligence Scale, Fourth Edition (WAIS-IV). This study examined the extent to which digits forward (DF) or digits backward (DB) account for variance in parent ratings of attention and executive function in children.