Table 3: Mean scores on neurodevelopmental scales at 5 years of age.

NMean (SD)

Intelligence
WPPSI1
 Performance IQ20794.7 (14.7)

Motor
WRAVMA2
 Pegboard-Dominant205110.7 (17.4)
 Pegboard-Nondominant204110.3 (17.2)
McCarthy
 Draw-a-Child2063.9 (16.1)
 Gross Motor-Leg19411.0 (2.2)
 Gross Motor-Arm2024.1 (2.4)

Language Development
WPPSI1 Vocabulary2078.8 (2.6)
PPVT320594.8 (17.5)

Memory
McCarthy
 Words and Sentences205−4.5 (16.6)
 Digit Span Forward204−15.2 (13.0)
 Digit Span Backward199−15.3 (10.6)

School Readiness
Woodcock-Johnson/Muñoz
 Letter-Word19992.4 (12.1)
 Applied Problems20687.0 (15.8)

Attention
CBCL4
 ADHD52004.7 (2.8)
KCPT6
 ADHD Confidence Index518845.7 (17.5)

1Weschler Preschool and Primary Scale of Intelligence.
2Wide Range Assessment of Visual Motor Ability.
3Peabody Picture Vocabulary Test.
4Child Behavior Checklist.
5Attention Deficit Hyperactivity Disorder.
6Kiddie Continuous Performance Test.
Note: We report differences between chronological and developmental ages for the McCarthy Draw-a-Child, Words and Sentences, and Digit Span Forward and Backward subtests (in months). Raw scores are reported for the gross motor tasks of the McCarthy scales (no developmental ages are available for these subtests) and for the CBCL as recommended by the test manual [42]. Standardized scores are used for other tests.