The Delis-Kaplan Executive Function System™ (D-KEFS™) is the first nationally standardized set of tests to evaluate higher level cognitive functions in both children and adults. Guidance on using this test in your telepractice.
Delis-Kaplan Executive Function System
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Delis-Kaplan Executive Function System

D-KEFS

Dean C. Delis,Edith Kaplan,Joel H. Kramer
The Delis-Kaplan Executive Function System™ (D-KEFS™) is the first nationally standardized set of tests to evaluate higher level cognitive functions in both children and adults. Guidance on using this test in your telepractice.
Choose from our formats
Publication date:
2001
Age range:
Ages 8 through 89 years
Qualification level:
C
Completion time:
Variable depending on subtest selected: full battery 90 minutes
Norms:
Normed on over 1,500 individuals demographically and regionally matched with the U.S. population

D-KEFS assesses the key components of executive functions believed to be mediated primarily by the frontal lobe. With nine stand-alone tests, D-KEFS allows examiners to comprehensively assess the key components of executive functions within verbal and spatial modalities. 

Administer any or all of the D-KEFS tests to customize your assessments:

  • Trail Making Test
  • Verbal Fluency Test
  • Design Fluency Test
  • Color-Word Interference Test
  • Sorting Test
  • Twenty Questions Test
  • Word Context Test
  • Tower Test
  • Proverb Test

Benefits

  • Assess the integrity of the frontal system of the brain.
  • Determine how deficits in abstract, creative thinking may impact daily life.
  • Plan coping strategies and rehabilitation programs tailored to each patient's profile of executive-function strengths and weaknesses.
  • Choose from two forms: Standard and Alternate.

Features

The D-KEFS game-like format is engaging for examinees, encouraging optimal performance without providing "right/wrong" feedback that can create frustration in some children and adults.

  • Standard Record Forms, including all nine D-KEFS tests.
  • Alternate Record Forms, including alternate versions of D-KEFS Sorting, Verbal Fluency, and 20 Questions tests.
  • Alternate set of Sorting Cards available.
  • Subtests can be recorded and scored as a complete battery or as individual subtests.

Correlates with CVLT-II

D-KEFS is correlated with the CVLT-II, providing information concerning the role of memory on D-KEFS performance.

An important study by Bohnen, Twijnstra, and Jolles (1992) was noted (p. 21) and referenced (p. 385) In the D-KEFS Examiner’s Manual (Delis, Kaplan, & Kramer, 2001). In this study, Bohnen et al. collected data from 10 patients (in the Netherlands) who had sustained mild TBIs with post-concussive symptoms that lasted longer than 3 months (the Persistent PCS group) and compared them to mild TBI patients who had recovered from their PCS symptoms after 3 months (the Recovered group). Bohnen et al. (1992) initially demonstrated that the Persistent PCS group performed significantly worse than the Recovered Group on a modified Stroop task that incorporated a switching procedure.

Dr. Manolo Sedo of Spain recently brought to our attention a second study by Bohnen, Jolles, and Twijnstra (1992), in which patients with acute mild TBI (6 to 14 days post injury) performed significantly worse than a match control group on the modified Stroop task that incorporated a switching procedure.

We wish to thank Dr. Sedo for drawing our attention to this important study.

Bohnen, N., Twijnstra, A., & Jolles, J. (1992). Performance in the Stroop color word test in relationship to the persistence of symptoms following mild head injury. Acta Neurologica Scandinavica, 85(2), 116–121.

Bohnen, N., Jolles, J., & Twijnstra, A. (1992). Modification of the Stroop color word test improves differentiation between patients with mild head injury and matched controls. The Clinical Neuropsychologist, 6(2), 178–184.

Telepractice

Find out how to use this test in your telepractice.

Learn more

D-KEFS on Q-interactive at a Glance: (Select subtests available)

Available With

  • Standard, Classroom, & Experiential Licenses

Subtests Available

  • Trail Making Test
  • Verbal Fluency
  • Design Fluency
  • Color-Word Interference

Subtest Pricing

Scoring and Reporting

  • Excel Report

Materials Needed

Benefits of D-KEFS on Q-interactive

  • Create custom batteries by combining subtests from the D-KEFS with other tests such as the WAIS-IV.
  • Standardize administration and simplify the management of D-KEFS materials so you can focus on what is important – the examinee.
  • Obtain scaled scores immediately after finishing a subtest, to increase speed and accuracy.

How Can I Buy D-KEFS on Q-interactive?

New customers:

Annual Q-interactive licenses can be purchased using our online order form or by calling Customer Support at 1-800-627-7271. See the Q-interactive pricing tab for more information on license options.

Current Q-interactive customers:

If you want to add the D-KEFS to your account, visit our online order form and select the "Add test(s) to existing account" option. You may also call Customer Support at 1-800-627-7271.

 

The following training events are available for D-KEFS.

 

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