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Delis-Kaplan Executive Function System

D-KEFS
The Delis-Kaplan Executive Function System (D-KEFS) is the first nationally standardised 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

  • Kits

    Starter & complete kits, print & digital

    2 options

    From £1,214.40
  • Test forms & reports

    Booklets, record forms, answer sheets, report usages & subscriptions

    20 options

    From £46.80
  • Support materials

    Manuals, stimulus books, replacement items & other materials

    9 options

    From £122.40
  • All products

    All tests and materials offered for D-KEFS

    29 options

    From £46.80
- of 29 results
Prices include VAT where applicable
  • D-KEFS Q-global Technical Manual (Digital)
    9780749115685 Qualification Level C

    Once ordered, the digital asset is accessible by logging into Q-global and visiting the Q-global Resource Library. It is a view-only digital file.

    £198.00

  • D-KEFS Q-global Examiner’s Manual (Digital)
    9780749115562 Qualification Level C

    Once ordered, the digital asset is accessible by logging into Q-global and visiting the Q-global Resource Library. It is a view-only digital file.

    £198.00

  • D-KEFS Twenty Questions Test Record Forms (Print)
    9780158091365 Qualification Level C

    Pack of 25 paper record forms for Twenty Questions Test

    £81.60

  • D-KEFS Sorting Test Alternate Set of Cards (Print)
    9780158091211 Qualification Level C

    3 sets of 6 cards each for Sorting Test

    £122.40

  • D-KEFS Alternate Record Forms (Print)
    9780158091204 Qualification Level C

    Pack of 25 alternate record forms for Sorting Test, Verbal Fluency Test and Twenty Questions Test.

    £151.20

  • D-KEFS Trail Making Test Response Booklets Conditions 1-5 Forms Bundle Qty 25 (Print)
    9780158091198 Qualification Level C

    Includes 25 Response Booklets for each Condition

    £208.80

  • D-KEFS Sorting Test Standard Set of Cards (Print)
    9780158091181 Qualification Level C

    2 sets of standard Sorting Test cards, and 1 practice set.

    £122.40

    Estimated to ship:11-12 weeks
  • D-KEFS Complete Kit UK (Print)
    9780749167998 Qualification Level C

    Includes Manual, Stimulus Booklet, Sorting Cards (3 sets of 6 Cards), 1 Tower Stand with 5 Colour Disks, 25 Record Forms, 25 Design Fluency Response Booklets, 25 Trail Making Response Booklet Sets (each set contains 5 Response Booklets for the 5 trail making conditions) in a trolley bag.

    £1,214.40

  • D-KEFS Complete Kit (Print) with Scoring Assistant CD
    9780749167981 Qualification Level C

    Includes Examiner's and Technical Manuals, Stimulus Booklet, Sorting Cards (3 sets of 6 cards each), 1 Tower stand with 5 color disks, 25 Standard Record Forms, 25 Design Fluency Response Booklets, and 25 Trail Making Response Booklet sets (each set contains 25 Response Booklets for the 5 Trail Making conditions), CD-ROM version Scoring Assistant (Windows)

    £1,326.00

  • D-KEFS Design Fluency Test Response Booklets Qty 25 (Print)
    9780158091174 Qualification Level C

    £57.60

  • D-KEFS Colour-Word Interference Test Record Forms (Print)
    9780158091235 Qualification Level C

    Pack of 25 record forms for Colour-Word Interference Test. 

    £81.60

  • D-KEFS Sorting Test Record Forms (Print)
    9780158091228 Qualification Level C

    Pack of 25 record forms for Sorting Test.

    £81.60

  • D-KEFS Design Fluency Test Record Forms (Print)
    9780158091358 Qualification Level C

    Pack of 25 record forms for Design Fluency Test.

    £81.60

  • D-KEFS Proverb Test Record Forms (Print)
    9780158091396 Qualification Level C

    Pack of 25 record forms for Proverb Test. 

    £81.60

  • D-KEFS Standard Record Forms (Print)
    9780158091150 Qualification Level C

    Pack of 25 combined standard record forms (all nine subtests included). 

    £272.40

  • D-KEFS Tower Test Record Forms (Print)
    9780158091389 Qualification Level C

    Pack of 25 record forms for Tower Test. 

    £81.60

  • D-KEFS Verbal Fluency Test Record Forms (Print)
    9780158091341 Qualification Level C

    Pack of 25 record forms for Verbal Fluency Test. 

    £81.60

  • D-KEFS Word Context Test Record Forms (Print)
    9780158091372 Qualification Level C

    Pack of 25 record forms for Word Context Test. 

    £81.60

  • D-KEFS Trail Making Test Record Forms (Print)
    9780158091334 Qualification Level C

    Pack of 25 record forms for Trail Making Test. 

    £52.80

  • DKEFS Q-global Stimulus Book (Digital)
    9780749183301 Qualification Level C

    Once ordered, the digital asset is accessible by logging into Q-global and visiting the Q-global Resource Library. It is a view-only digital file.

    £270.00

  • D-KEFS Stimulus Book (Print)
    9780158091136 Qualification Level C

    £270.00

  • D-KEFS Tower Test Wooden Tower Base
    9780158091143 Qualification Level C

    Tower Test wooden base with three pegs and five wooden discs for use with Tower Test. 

    £237.60

  • D-KEFS Technical Manual (Print)
    9780158091327 Qualification Level C

    D-KEFS US Technical Manual

    £198.00

  • D-KEFS Examiner's Manual (Print)
    9780158091310 Qualification Level C

    £198.00

    Estimated to ship:1 week
  • D-KEFS Trail Making Test Response Booklets Condition 1 Qty 25 (Print)
    9780158091457 Qualification Level C

    £46.80

  • D-KEFS Trail Making Test Response Booklets Condition 2 Qty 25 (Print)
    9780158091464 Qualification Level C

    £46.80

  • D-KEFS Trail Making Test Response Booklets Condition 3 Qty 25 (Print)
    9780158091471 Qualification Level C

    £46.80

  • D-KEFS Trail Making Test Response Booklets Condition 4 Qty 25 (Print)
    9780158091488 Qualification Level C

    £46.80

  • D-KEFS Trail Making Test Response Booklets Condition 5 Qty 25 (Print)
    9780158091495 Qualification Level C

    £46.80

Overview

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
System requirements:
Software-based scoring and reporting is compatible with Windows XP, Vista, & 7 only.
Telepractice:
Guidance on using this test in your telepractice

Product Details

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. 

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.
  • Generate D-KEFS score reports faster and easier with D-KEFS Scoring Assistant® software.

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