Table 2.
Criteria for NVLD Diagnosis.
| Criterion | Assessment Measure |
|---|---|
| Child must have: | |
| Perceptual deficit OR a discrepancy between VIQ and PIQ (>15 points) | WISC or WASI: Block Design or Matrix Reasoning ≤ 16th%ile |
| Intact single word reading abilities | WJ-III Letter Word Identification > 16th%ile |
| Absence of autistic traits | ADI-R Interests and Behaviors Module ≤ 4 |
| Child must also have 2 of the following: | |
| Fine motor difficulties | Perdue Pegboard ≤16th%ile |
| Math calculation difficulties | WJ-III Calculation ≤16th%ile |
| Visual executive functioning difficulties | Rey Osterrieth Complex Figure Test Copy ≤16th%ile |
| Social difficulties | Vineland-II Socialization domain ≤16th%ile or CBCL Social Problems ≥95th%ile |
Displays the criteria for NVLD diagnosis. ADI-R = Autism Diagnostic Interview – Revised; CBCL = Child Behavior Checklist; NVLD = Nonverbal Learning Disability; WJ = Woodcock Johnson; WASI = Wechsler Abbreviated Scale of Intelligence; WISC = Wechsler Intelligence Scale for Children.