Delis Rating of Executive Functions, Adult (D-REF Adult)

  • Dean C. Delis

  • PhD

Quickly and easily administer, score, and report the frequency of observed behaviours that identify executive function problems in adults.

Ages / Grades:

19:0–79:11 years old

Administration Format:

Online (Paper available via download)

Administration Time:

10-15 min

Scoring Options:

Web-based (Q-global)

Scores / Interpretation:

  • T scores

  • Base Rates

Report Options:

  • Individual Score Report – Self-Rating Form

  • Individual Score Report – Collateral Rating Form

  • Multi-Rater Score Report

  • Progress Report



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Now availalble!


  • D-REF Adult Q-global starter kit (digital)



    Includes Manual (Digital), Self Form Response Book (Digital), Collateral Form Response Book (Digital) and 30 Q-global Report Usages


  • D-REF Adult Q-global Collateral Form Response Book (digital)



    Downloadable and copyable

  • D-REF Adult Q-global Score Report Administration/Report (qty 1) (digital)



  • D-REF Adult Q-global Manual (digital)



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

  • D-REF Adult Q-global Self-form Response Book (digital)



    Downloadable and copyable

LIVE, Up-Coming Webinars:

The Delis Rating of Executive Functions – Adult (D-REF Adult) Part 1: Rationale, Features, and National Normative Data

Presenter: Dean Delis, Ph.D., A.B.P.P.

Dr. Delis will explain the primary objectives and features of the D-REF Adult, including the development of an EF rating scale that takes about half the time of existing EF rating scales while still providing both validity scales and clinical scales that assess the major areas of executive function and dysfunction in adults.


» March 17, 2021 | 3:00 - 4:00 PM ET


The Delis Rating of Executive Functions – Adult (D-REF Adult) Part 2: Guidelines for Clinical Interpretation

Presenter: Dean Delis, Ph.D., A.B.P.P.

In Part 2 of this webinar series, Dr. Delis will provide guidelines for making clinical interpretations of the findings of the D-REF Adult. Dr. Delis will also discuss the use of an optional feature of the D-REF Adult Score Report that provides a list of specific recommendations for interventions for EF problems targeted to each examinee’s profile of EF strengths and weaknesses. A case example will be provided to illustrate the different interpretive guidelines.


» March 24, 2021 | 3:00 - 4:00 PM ET

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