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Northwestern Anagram Test (NAT)

NU 2011-152



Cynthia Thompson*

Sandra Weintraub

Marek Mesulam


Short Description

The Northwestern Anagram Test (NAT) was designed to examine non-verbal production of canonical and non-canonical sentences in individuals with language disorders resulting from neurological disease. For a sample of the test stimuli and response form, please see the sample file below.


Purchase Options

Due to concerns surrounding COVID-19 and Northwestern University’s response, shipments of printed versions of NAT will be delayed. Shipments will resume once Northwestern returns to standard operating procedures.


Thank you for your patience during this time.


The Northwestern Anagram Test (NAT)

by Northwestern Aphasia Lab

  • Printed Materials Included:
    • (1) Examiner's Manual
    • (1) Picture stimulus book (contains long & short versions)
    • (2) Sets of sentence cards: (1) Long Version
    • (1) Short Version
    • (2) Response forms: (1) Long Version
    • (1) Short Version
  • Price: $205.00



The Northwestern Anagram Test (NAT) is available via a license from Northwestern University for research and clinical use.


Payment by credit card can be made after agreeing to the NAT license agreement at checkout.  Your order will be shipped within ten (10) days of payment confirmed by your credit card.  Please allow 5-7 days for delivery.


What is NAT?

The NAT consists of two forms:  (I) a Long Version, and (II) a Short Version. Both examine non-verbal production of canonical and noncanonical sentences. The Long Version examines production of the same sentence types examined with the Northwestern Assessment of Verbs and Sentences (NAVS) (Thompson, 2011;, including active sentences, passive sentences, subject extracted wh-questions, object extracted wh-questions, subject relatives, and object relatives. The Short Version examines production of a subset of these structures: subject extracted wh-questions and object extracted wh-questions.


Sample Files

NAT-Sample Stimuli and Response Form



The NAT is described in the following research papers:


Weintraub, S., Mesulam, M.M., Wieneke, C., Rademaker, A., Rogalski, E.J., Thompson, C.K. (2009). The Northwestern Anagram Test: Measuring sentence production in Primary Progressive Aphasia. American J of Alzheimer’s Disease & Other Dementias, 24, 408-416.


Mesulam, M.M., Wieneke, C., Rogalski, E., Cobia, D., Thompson, C.K., & Weintraub, S. (2009). Quantitative template for subtyping primary progressive aphasia. Archives of Neurology, 66(12), 1545-1551.


Thompson, C.K., Meltzer-Asscher, A., Cho, S., Lee, J., Wieneke, C., Weintraub, S., & Mesulam, M.-M. (In Press). Morphosyntactic processing in stroke-induced and primary progressive aphasia. Behavioral Neurology. 


Refunds are available within 60 days of purchase under the following conditions:

• Materials must remain unused.

• Purchaser must contact Northwestern University at within 60 days from the date of purchase to initiate the refund request. Please provide a copy of the purchase receipt included with the request.

• 90% of the purchase price will be refunded.

• Purchaser must confirm destruction of the licensed materials upon request by Northwestern.

Refunds will not be issued for used materials or for requests made more than 60 days from the purchase date. Northwestern may refuse a refund request if evidence is found of fraud, refund abuse or other manipulative behavior that entitles Northwestern to a corresponding counterclaim.


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Patent Information: