4. Extreme demand avoidance questionnaire

The ‘Extreme Demand Avoidance Questionnaire’ (EDA-Q) is a measure designed to quantify traits of extreme/‘pathological’ demand avoidance in children aged 5-17, on the basis of parent or teacher-report. The questionnaire was developed to ensure that PDA traits were being measured in a consistent way for research purposes. 

The English version of the EDA-Q with scoring information and a summary can be downloaded here

The Norwegian version of the EDA-Q with scoring information and a summary can be downloaded here.

The full research study describing its preliminary validation can be downloaded here

EDA-Q translations:


If you would like to translate the measure into other languages (or already have a translated version), please get in touch with me directly: liz.onions@kuleuven.be


Other methods to quantify extreme/'pathological' demand avoidance:


Recent work has identified items from within the Diagnostic Interview for Social and Communication Disorders (DISCO) that are both common in extreme/'pathological' demand avoidance and specific to it as compared to the rest of the autism spectrum. The publication describing the identification of these DISCO items can be downloaded here