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Delis-Rating of Executive Function (D-REF)

Dean C. Delis

A quick measure of an individual's behaviours related to executive function difficulties

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Technical Information

Age range: 5-18 years old

Qualification level: B

Year: 2012

Administration time: 5-10 minutes per form

Administration type:

D-REF is online and easy to use!

Delivered online via Pearson's Q-global scoring and reporting platform, 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 5-18. This flexible, sensitive assessment includes parent, teacher, and self-ratings.

Users & Applications

Clinicians and school 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


Technical Information

Q-global® Administration Options

This product is available on Q-global with the following administration options:

On-Screen Administration (OSA)

Your clients can complete these assessment online through Q-global. Alternatively, your client can complete the assessment in paper-pencil format, and their responses can then be data-entered into Q-global for scoring and report generation. On Screen Administrations are proctored (supervised) unless specifically indicated.

Remote On-Screen Administration (ROSA)

These assessments can be emailed to clients, teachers, or parents, so that the assessment can be completed at their own location. These assessments are not proctored (supervised).  


Content & 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 functioning

Emotional functioning

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 & 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 5-18; self-rating forms for ages 11-18
  • 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 Year 4 reading level
  • Part II features the “Top 5 Stressors” section to prioritise behaviours for immediate intervention
  • Monitor progress over time to evaluate intervention effectiveness

Scoring & Reporting

  • Delivered on Q-global
  • 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  

Q-global® Resource Library

If you or your clients do not have access to a computer, the internet or you simply prefer to administer D-REF in a paper and pencil format, an option is available to print the appropriate Record Form from Q-global Resource Library which is available in your Q-global account. You can manually enter the item responses via your Q-global account and then generate a report for which you will require a D-REF report usage.

The following forms are available at no charge and can be printed from the Q-global Resource Library accessed via your Q-global account:

  • D-REF Record Form – Self
  • D-REF Record Form – Parent
  • D-REF Record Form – Teacher