Sponsored by the Association of Specialists in the Assessment of Intellectual Functioning (ASAIF) www.asaif.net

Differential Ability Scales, Second Edition (DAS-II):

An Oldie, but Still Very Much a Goodie

An ASAIF Shorty

Presented by John O. Willis, Ed.D., SAIF

Date:              Tuesday 6 December 2016                         Location:   Nackey S. Loeb

Time:              5:00 p.m. – 8:00 p.m.                                               School of Communications

Registration:    4:30 p.m.                                                                 749 East Industrial Park Drive

                                                                                                     Manchester, NH 03109


                                                                                                     (603) 627-0005

Cost:  ASAIF Members $35, Nonmembers $45.  (Nonmember rate for one's first Shorty of the school year plus $15 [a total of $60] confers membership through 8/31/17.*)  (Fee includes   coffee and other beverages, fruit, cheese, and cookies.  Please bring your own supper.)

Certificates will be given for 3 clock hours or 3 NASP-approved CPD credits.     Please register early!     

* MEMBERSHIP:  Become a member of ASAIF for $25 per year:  swasey@comcast.net (Lisa Zack-Swasey, SAIF).  ASAIF membership years runs September 1 through August 31.

Although the norms are getting old, the DAS-II, created by the late Colin D. Elliott, remains a very useful assessment of cognitive abilities and, even though some of Dr. Elliott's innovations have been adopted by other tests, the DAS-II still offers some unique characteristics that make it particularly valuable for some assessments.

The DAS-II is owned, trademarked, and copyrighted by Pearson, Inc. http://www.pearsonclinical.com/education/products/100000468/differential-ability-scales-ii-das-ii.html  This is not in any way, shape, or form an official Pearson workshop, just the presenter's observations and opinions!

Learning Objectives:   Following this Shorty, participants will be able to . . .

  1. with additional, supervised practice, learn to administer and score the DAS-II

  2. work comfortably with T scores, standard scores, Ability scores, confidence intervals, and significant and uncommon differences

  3. take advantage of the highly individualized item-set administration rules of the DAS-II

  4. avoid awful mistakes that would be featured in next year's presentation

  5. determine when the DAS-II is the best instrument to use in an evaluation

  6. clearly present and explain the results of an assessment,

  7. interpret test results clearly, coherently, and usefully, and offer realistic and useful recommendations.



Suggested Reading:

http://www.myschoolpsychology.com/test-tools/das-2/    Lots of information.

Canivez, G. L., & McGill, R. J. (2016). Factor structure of the Differential Ability Scales—Second Edition: Exploratory and hierarchical factor analyses with the core subtests. Psychological Assessment, 27(4). Advance online publication. http://dx.doi.org/10.1037/pas0000279

Dumont, R., Willis, J. O., & Elliott, C. D. (2008). Essentials of DAS-II assessment. Hoboken, NJ: Wiley.

Elliott, C. D. (2007). Differential Ability Scales 2nd edition introductory and technical handbook. San Antonio, TX: The Psychological Corporation.  Valuable general assessment text with helpful discussion of Item Response Theory.

Elliott, C. D. (2012). The Differential Ability Scales. In D. P. Flanagan & P. L. Harrison (Eds.), Contemporary intellectual assessment: Theories, tests, and issues (3rd ed., pp. 336-356). New York, NY: Guilford.

Elliott, C. D., Hale, J. B., Fiorello, C. A., Dorvil, C., & Moldovan, J. (2010). Differential Ability Scales-II prediction of reading performance: Global scores are not enough. Psychology in the Schools, 47, 698-720.

Elliott, C. D., Salerno, J. D., Dumont, R., & Willis, J. O. (in preparation). The Differential Ability Scales - Second Edition (DAS-II). In Flanagan, D. P. & McDonough, E. (Eds.), Contemporary intellectual assessment (4th ed.). New York, NY: Guilford.

Glutting, J. J., McDermott, P. A., Konold, T. R., Snelbaker, A. J., & Watkins, M. W. (1998). More ups and downs of subtest analysis: Criterion validity of the DAS with an unselected cohort. School Psychology Review, 27, 599-612.

Hale, J. B., Fiorello, C. A., Dumont, R., Willis, J. O., Rackley, C., & Elliott, C. D. (2008). Differential Ability Scales-Second Edition (neuro)psychological predictors of math performance for typical children and children with math disabilities. Psychology in the Schools, 45, 838-858.

Keith, T. Z., Low, J. A., Reynolds, M. R., Patel, P. G., & Ridley, K. P. (2010). Higher-order factor structure of the Differential Ability Scales-II: Consistency across ages 4 to 17. Psychology in the Schools, 47, 676-697. doi: 10.1002/pits.20498

Keith, T. Z., Quirk, K. J., Schartzer, C., & Elliott, C. D. (1999). Construct bias in the Differential Ability Scales?: Confirmatory and hierarchical factor structure across three ethnic groups. Journal of Psychoeducational Assessment, 17, 249-268.

Mather, N., & Jaffe, L. E. (Eds.) (2010). Comprehensive evaluations: Case reports for psychologists, diagnosticians, and special educators. Hoboken, NJ: Wiley. Fifty-eight diverse sample reports with commentary by the report authors.

Sattler, J. M., Dumont, R., Willis, J. O., & Salerno, J. (2008). Differential Ability Scales – Second Edition (DAS-II). In J. M. Sattler, Assessment of children: Cognitive foundations (5th ed., pp. 605-675). San Diego, CA:      Jerome M. Sattler, Publisher.

Registrations will be accepted through Friday 2 December, but only if we get sufficient enrollment by Monday 28 November in order to hold this Shorty, so please let us know before Monday 28 November, if possible! We are unable to provide refunds for cancellations after 10 October unless this event is cancelled by ASAIF.

There will be no confirmation letter. Only those who cannot be accommodated will be contacted.

For further information, dietary needs, and accommodations for participants with disabilities, please email gingermentel@gmail.com     


 Please copy and return this form with payment to:                        Lisa Zack-Swasey

                                                                                                42 Ole Gordon Road 

                                    or                                                         Brentwood, NH 03833


Register on-line with PayPal at http://www.asaif.net    We also accept Purchase Orders (POs)


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DAS-II Shorty 12.6.16