Select a Product
Learning Resources
Assessment Tools
Download a Product
New and Featured Products
Obtain a Catalog

View Your Cart
Check out the ACA Special Education News. Print out the articles!
ACA Special Education News
ACA Newsletter
Author Guidelines

Toll-Free Orders:

Our proprietary publications are all
made in the USA.

We publish hundreds of speech, language, and special education resources.

The ACA website is secure. Charge card information is encrypted.

Associates, Inc.
P.O. Box 4279
Oceanside, CA 92052-4279

Toll-Free Orders:

Business Office:


We accept MasterCard, Visa,
American Express, and
Discover Cards.

Screening Test for Developmental Apraxia of Speech (STDAS-2) (#29930-IN)

Robert Blakely

Ages 4 through 12. The Screening Test for Developmental Apraxia of Speech - Second Edition (STDAS­2) is now completely revised and updated to incorporate reviewers' suggestions for improving the instrument. The STDAS­2 identifies children ages 4 through 12 who have both atypical speech-&-language problems and associated oral performance. These two key factors render children suspect for developmental apraxia of speech.

The STDAS­2 has four subtests. The first subtest, Expressive Language Discrepancy, is a required prescreening task. For this subtest, the difference between expressive and receptive language age is calculated if receptive language age is higher than expressive language age. This discrepancy remains the best indicator for further testing of developmental apraxia of speech. The other three subtests, Prosody, Verbal Sequencing, and Articulation, are core subtests.

The STDAS­2's reliabilities range from .75 to .96. Several new validity studies were conducted. One validity study examined STDAS­2 subtest scores on the Verbal Sequencing and Articulation subtests for three groups: children suspected of having developmental apraxia, children with other language impairments, and children with normal speech. The higher the score for both these subtests, the greater the probability of having apraxia of speech. For both subtests, children suspected of having developmental apraxia of speech scored higher than children in the other two groups. The test provides the examiner with the probability of a child having developmental apraxia of speech based on the age of the child and scores on the three core subtests.

The complete kit includes the Examiner's manual and 50 Profile/Examiner Record Forms in a sturdy storage box.


Product Inquiry
Screening Test for Developmental Apraxia of Speech (STDAS-2)
Price : $121.00  ea
Speech and Language Therapy - Augmentative Communication - Occupational Therapy - Bilingual/ESL- Remedial Reading - Learning Disabilities

    Copyright 2020 Academic Communication Associates, Inc.   |   Online Bookstore  |  Contact Us    |  Order a Catalog   |  Secure Ordering