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Extreme Demand Avoidance Questionnaire—Adult version

Extreme Demand Avoidance Questionnaire—Adult version

What is EDA-QA

EDA-QA is a useful tool to assess self-identified traits of relevance to the Pathological (“extreme”) demand avoidance (PDA) profile. The EDA-QA is a 26-item self-report adaptation of the observer-rated EDA-Q revised for use with adult populations.

EDA-QA Printable PDF

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EDA-QA Scoring and Interpretation

The EDA-QA consists of 26 items relating to behaviour associated with PDA (e.g., “I am driven by the need to be in charge” and “I sometimes use outrageous or shocking behaviour to get out of doing something”). Answers are given in the form: not true; some-what true; mostly true; very true. Scoring for all items follows: 0 = not true; 1 = some-what true; 2 = mostly true; 3 = very true, except for items 14 and 20, which require reverse scoring. A total possible score for all items (accounting for reverse scoring) is 78.

Higher scores indicate more EDA traits.

PsyPack can automatically score the EDA-QA assessment and prepare corresponding tables and graphs.

EDA-QA sample result

Further, PsyPack automatically plots a graph to help you easily track progress over time.

EDA-QA track progress

Sample Report of EDA-QA


Pathological Demand Avoidance (PDA), Autism Spectrum Disorders

What does EDA-QA measure

The purpose of the evaluation is to:

  • assess self-identified traits of relevance to the Pathological (“extreme”) demand avoidance (PDA) profile.



Type of outcome tool


Assessment modes


Age and eligibility


Estimated time

10-15 minutes


Since the questionnaire relies on client self-report, all responses should be verified by the clinician, and a definitive diagnosis is made on clinical grounds taking into account how well the client understood the questionnaire, as well as other relevant information from the client.

The (Extreme Demand Avoidance Questionnaire—Adult version; EDA-QA) is adaptation of an informant-rating instrument (the Extreme Demand Avoidance Questionnaire; EDA-Q) for use as a self-report measure of traits and behaviours related to PDA in adults without intellectual impairment.

One of the inherent difficulties studying a person with PDA is that they may be resistant to doing things asked of them, or to complete a research protocol where they have to abide by the rules and structures imposed by the researcher. Thus, this scale may be challenging to administer with persons in a clinical context who express more extreme presentations, lack adaptive skills or self-awareness, or are unwilling to comply and engage with research.

Persons in closed settings or with particularly acute apparent PDA may be designated as non-compliant or demand-avoidant, despite the person’s withdrawing engagement being the only expression of autonomy that they have. In such cases, labeling the individual as demand avoidant arguably reflects the needs of the person with authority over the ‘demand-avoiding’ individual. Given the avoidant person may be high in features of ASD, there may be mutual incomprehension regarding a need to communicate or engage in particular activities. Improving communication with persons who express PDA may be critical for more constructive and ethical engagement and assessment. From the perspective of the ASD individual, avoiding demands may represent an effective way of functioning when an asocial behavioural strategy is adopted to optimize individual rather than group survival.

Attribution and References

Egan, V., Linenberg, O. & O’Nions, E. The Measurement of Adult Pathological Demand Avoidance Traits. J Autism Dev Disord 49, 481–494 (2019).