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Delis-Kaplan Executive Function System (D-KEFS)

Assess key components of executive function within verbal and spatial modalities in individuals aged 8 to 89 years

By Dean C. Delis, Edith Kaplan and Joel H. Kramer

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Year
2001
Age range
8 to 89 years
Administration time
90 minutes
Administration type
Individual; Q-interactive® administration and scoring, software or manual scoring
Overview

The D-KEFS enables you to assess the key components of executive functions believed to be mediated primarily by the frontal lobe.

Use D-KEFS to:

  • Assess the integrity of the frontal system of the brain
  • Determine how deficits in abstract, creative thinking may impact daily life
  • Design coping strategies and rehabilitation programs tailored to each patient's profile of executive function strengths and weaknesses

Its game-like format is engaging for examinees, encouraging optimal performance without providing “right/wrong” feedback that can create frustration.

Items & Pricing
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Q-interactive (iPad administration) - selected subtests only

D-KEFS subtests include: Trail Making Test (TMT), Verbal Fluency (VF), Design Fluency (DF), and Colour-Word Interference Test (CWIT)

Q-interactive set up requires the following components:
1) Two (2) iPads - purchase from Apple retailer (see Technical Requirements for supported devices)
2) Annual Licence Fee
3) Starter Kit / Required Test Materials
4) Subtest Usage Fees

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Annual Licence Fee

ISBN Title User Level Price
9781925120042 Q-interactive Annual Licence Fee 1-3 (per user)
Allows 1-3 Test Instruments in your digital test library^
C $355.00 Login to purchase
9781925120035 Q-interactive Annual Licence Fee 4-6 (per user)
Allows 4-6 Test Instruments in your digital test library^
C $415.00 Login to purchase
9781925038002 Q-interactive Annual Licence Fee 7+ (per user)
Allows 7+ Test Instruments in your digital test library^
C $475.00 Login to purchase

Starter Kit / Required Materials

ISBN Title User Level Price
9781925038958 D-KEFS Q-interactive Starter Kit includes:
Stimulus Book;
Design Fluency Booklets (Pack of 25);
Trail Making Booklets Conditions 1-5 (25 of each)
Individual components can be purchased below
C $496.00 Login to purchase

D-KEFS Subtest Usage Fees

$2.20 AUD / $3 NZD per subtest*

*Subtest Usage Fees are billed monthly. Please contact us if you wish to purchase subtests upfront in bulk.

^The Client Services team will be in contact with you to confirm the assessments for your Annual Licence. Test Instrument selection cannot be changed mid-license unless the full selection has not been made. Upgrading to the next Annual Licence level is permissible at any time by paying the difference in cost between the two Annual Licences, as per above.


Kits

ISBN Title User Level Price
9780158091112 D-KEFS Complete Kit
includes: Manual, 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 Booklets Conditions 1-5 (25 of each set), Soft Carry Case
C $1450.00 Login to purchase
9780158091426 D-KEFS Complete Kit with Scoring Assistant
includes all materials in Complete Kit plus Unlimited-Use Scoring Assistant CD
Software requires Windows XP, Vista, or 7 and CD drive.
Not compatible with Windows 8, Windows 10 or Mac OS.
Includes two (2) installations.
C $1680.00 Login to purchase

Additional Materials

ISBN Title User Level Price
9780158091310 D-KEFS Examiner's Manual C $245.00 Login to purchase
9780158091327 D-KEFS Technical Manual C $250.00 Login to purchase
9780158091136 D-KEFS Stimulus Book C $396.00 Login to purchase

D-KEFS Record Forms

ISBN Title User Level Price
9780158091150 D-KEFS Standard (Combination) Record Forms (Pack of 25)
contains the following subtests: Trail Making, Verbal Fluency, Design Fluency, Color-Word Interference, Card Sorting, Twenty Questions, Word Context, Tower, and Proverbs.
C $236.00 Login to purchase
9780158091334 D-KEFS Trail Making Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091341 D-KEFS Verbal Fluency Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091358 D-KEFS Design Fluency Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091235 D-KEFS Colour-Word Interference Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091228 D-KEFS Cards Sorting Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091365 D-KEFS Twenty Questions Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091372 DKEFS Word Context Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091389 D-KEFS Tower Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091396 D-KEFS Proverbs Record Forms (Pack of 25) C $105.00 Login to purchase
9780158091204 D-KEFS Alternate Record Forms (Pack of 25)
For Verbal Fluency, Card Sorting, and Twenty Questions
C $105.00 Login to purchase

Response Booklets

ISBN Title User Level Price
9780158091198 D-KEFS Trail Making Response Booklets Condition 1-5
(Pack of 25) contains 25 Response Booklets for each of the 5 Conditions
C $265.00 Login to purchase
9780158091457 D-KEFS Trail Making Response Booklets Condition 1
(Pack of 25)
C $65.00 Login to purchase
9780158091464 D-KEFS Trail Making Response Booklets Condition 2
(Pack of 25)
C $65.00 Login to purchase
9780158091471 D-KEFS Trail Making Response Booklets Condition 3
(Pack of 25)
C $65.00 Login to purchase
9780158091488 D-KEFS Trail Making Response Booklets Condition 4
(Pack of 25)
C $65.00 Login to purchase
9780158091495 D-KEFS Trail Making Response Booklets Condition 5
(Pack of 25)
C $65.00 Login to purchase
9780158091174 D-KEFS Design Fluency Response Booklets
(Pack of 25)
C $105.00 Login to purchase

Card Sorting Test

ISBN Title User Level Price
9780158091181 D-KEFS Cards Sorting Test
contains 2 sets of Standard Sorting Cards and 1 Practice Set
C $190.00 Login to purchase
9780158091211 D-KEFS Sorting Cards Alternate Set (3 sets of 6 cards each) C $177.00 Login to purchase

Scoring Software

ISBN Title User Level Price
9780158984186 D-KEFS Unlimited-Use Scoring Assistant CD
Software requires Windows XP, Vista, or 7 and CD drive.
Not compatible with Windows 8, Windows 10 or Mac OS.

Includes two (2) installations.
C $384.00 Login to purchase

Can't find the item you're looking for? Call us on 1800 882 385 (AU) or 0800 942 722 (NZ)
Technical Information

Technical Information

The nine stand-alone tests in the D-KEFS comprehensively assess the key components of executive function believed to be mediated primarily by the frontal lobe.

The D-KEFS tests are listed below, along with the key executive function they assess:

  • Sorting Test: problem solving, verbal and spatial concept formation, flexibility of thinking

  • Trail Making Test: flexibility of thinking on a visual motor task

  • Verbal Fluency Test: fluent productivity in the verbal domain

  • Design Fluency Test: fluent productivity in the spatial domain

  • Colour-word Interference Test: verbal inhibition

  • Tower Test: planning and reasoning, impulsivity

  • 20 Question Test: hypothesis testing, verbal and spatial abstract thinking

  • Word Context Test: deductive reasoning

  • Proverb Test: metaphorical thinking and comprehending abstract thought

Multiple uses

D-KEFS results can be used to assess the integrity of the frontal system of the brain to determine how deficits in abstract, creative thinking may impact on an individual's daily life, and to plan coping strategies and rehabilitation programs tailored to each patient's profile of executive function strengths and weaknesses.

For more information about D-KERS digital, go to www.helloq.com.au/d-kefs