Our Customer Service department will be closed on Monday, July 4. We will resume normal business operations on Tuesday, July 5, at 7:00 AM CT.
Top mental health tools — all in one place.
Explore our resources
Earn money by contributing to product development
Sign up for updates
Customer Support Reimagined
While the NNAT-I is no longer available from Pearson, we do offer some alternatives for measuring non verbal ability, for example: the Raven's 2 and the Wechsler Nonverbal Scale of Ability. If you would like to continue purchasing the NNAT-I, please visit the MHS website.
Raven's Progressive Matrices | Clinical Edition
Wechsler Nonverbal Scale of Ability
Get instructions and help on ordering online or from our product catalog.
Phone: +1 (800) 627-7271
Fax: +1 (800) 232-1223