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NAB® Numbers & Letters Test

Robert A. Stern, PhD, and Travis White, PhD

Purpose:
Evaluates deficits in attention, inhibition, and impulsivity
Format:
Paper and pencil
Age range:
18 years to 97 years
Time:
15-20 minutes
Qualification level:
C
C
All qualifications for Level B plus an advanced professional degree that provides appropriate training in the administration and interpretation of psychological tests, or license or certification from an agency that requires appropriate training and experience in the ethical and competent use of psychological tests. Close

Incorporating letter cancellation and counting tasks to evaluate deficits in attention, the four subtests of this task were developed to measure seven aspects of attention: sustained attention, psychomotor speed, selective attention, divided attention, information processing speed, impulsivity, and disinhibition.