Table 3: Mean neuropsychological test scores (±SEM) in cognitively intact subjects only, adjusted for age, sex, and education in presumptive positive and negative childhood ADHD subjects as determined by Wender-Utah Rating Scale score.

Neuropsychological test scoresADHD positive ( )ADHD negative ( )P value

Folstein MMSE 0.64
Animal Fluency 0.10
Trailmaking test A 0.74
Trailmaking test B 0.79
WAIS-R Digit-Symbol Substitution 0.58
WMS Logical Memory Delayed 0.90
WAIS-R Digit Span Forward 0.07
WAIS-R Digit Span Backward 0.61

Abbreviations: MMSE: Mini-Mental State Examination; CDR: Clinical Dementia Rating scale; WAIS-R: Wechsler Adult Intelligence Scale-Revised; WMS: Wechsler Memory Scale.