Delis Rating of Executive Functions (D-REF)

Key information

A measure of an individual's behaviours related to executive function difficulties. Delivered online via Pearson's new Q-global scoring and reporting platform.


Dean C Delis

Publication Year:


Age Range:

5 to 18 years


Individual, Online - 5 to 10 minutes per form

Qualification Code:


Read the full product description

Detect executive function issues based on behaviours

Delivered online via Q-global, D-REF lets you quickly and easily administer, score, and report the frequency of observed behaviours that identify executive function problems in children and adolescents ages 5-19. This flexible, sensitive assessment includes parent, teacher and self-ratings with 36 items that are answered as: Seldom/Never; Monthly; Weekly; or Daily.

Guidance on using D-REF in your Telepractice

Digital scoring and reporting options available on Q-global®


Users and Applications

Clinicians and educational psychologists working in a variety of settings can use this instrument to evaluate children with:

  • ADHD-Combined
  • ADHD-Inattentive
  • Traumatic brain injury
  • Autism/Asperger’s Syndrome
  • Neurological/psychiatric disorders
  • Learning disabilities 
  • Enable the identification of patterns of clinically relevant symptoms
  • Identify symptoms that create the most stress for the parent, teacher, and child for intervention
  • Identify symptoms relevant to diagnostic criteria (DSM-IV)
  • Track changes in behaviour after intervention


Content and Administration

Three core indexes and a total composite score are provided via the D-REF online scoring and reporting site that are based on three manifestations of executive control problems:

  • Behavioural regulation
  • Emotional/social regulation
  • Cognitive functioning
  • Total index calculated from the three core indexes


Four additional second level index scores are available to identify patterns of clinically relevant symptoms:

  • Attention/Working Memory Index 
  • Activity Level/Impulse Control Index
  • Abstract Thinking/Problem Solving Index
  • Compliance/Anger Management Index


Features and Benefits

  • Online administration and scoring
  • Paper forms can be printed off when necessary and key stroked into the scoring  program
  • Parent and teacher rating forms for ages 5-19; self-rating forms for ages 11-19
  • Parent and teacher forms can be sent as links to their email address or printed out if access is not available
  • Single rater reports are offered for the parent, teacher, or child, as well as multiple rater reports with comparative statistics
  • A text-to-speech function allows items to be read to the client
  • Items are written at a fourth grade reading level
  • Part II features the “Top 5 Stressors” section to prioritise behaviours for immediate intervention
  • Monitor progress over time to evaluate intervention effectiveness


Psychometric Information

  • Choose age adjusted  or age and gender adjusted norms
  • The parent, teacher and self-rating forms show high internal consistency for the three primary indexes and the composite index
  • Clinical scales have moderate to high levels of internal consistency
  • Test-retest reliability are consistent over time
  • Sensitive to common developmental disorders


Scoring and Reporting

  • Delivered on Q-global, Pearson’s new on-line scoring and reporting platform. 
  • All index scores are expressed in T score metric. Gender-adjusted T scores are also available 
  • Multi-rater forms statistically compare teacher-parent, teacher-self, or parent-self ratings 
  • Progress monitoring report statistically evaluates change in symptoms between two administrations


Standardisation Sample by Age

standardisation sample by age


Standardisation Demographics Gender and Parent Education Level

standardisation demographics sex and parent education level


Standardisation Demographics Ethnicity

standardisation demographics ethnicity


Summary of D-REF Structure

summary of D-REF structure


Q-global® - Our web-based system for scoring and reporting paper administrations

Q-global logo

Q-global® is our secure and affordable web-based platform for test administration, scoring and reporting. It houses the industry's gold standard in assessment tools and is accessible from any computer connected to the Internet. Q-global helps you quickly and efficiently organise examinee information, generate scores, and produce accurate comprehensive reports.

Two options for scoring and reporting are now available on Q-global:

  • The first option is to pay per-report. Customers who administer this assessment only a few times each year, or those who want the flexibility to pay only as the assessment is used, may prefer this option.

  • The second option is to select an "unlimited use" subscription, where one user of this assessment gets unlimited scoring and reporting for a year. This may be a better option for customers who administer this measure several times each year - and don't want to worry about keeping track of their report expenses.

Learn more about -Q-global

Please note there is no onscreen administration included in the scoring subscription. Customers selecting this option must manually enter data in order for scores and reports to be generated. 


Price list

Delis-Rating of Executive Function (D-REF) Q Global Report Usage online

Please note that it may take up to two business days for report usages to become available within your Q-global account. You will receive email notification when the report usages are available to use.
ISBN: 9780150011880
£2.40 inc VAT

D-REF Q-global Manual

ISBN: 9780150011897
£71.00 inc VAT
Q-global D-REF Scoring Subscription (1 year)
ISBN: 9780749170943
£48.00 inc VAT

Change the quantities of your desired products, then click "Add to basket". If your required component is not listed, please contact Customer Services on: or 0345 630 88 88.

What do you think?