Somatoform Dissociation Questionnaire (SDQ) Test

How the Scales are Structured
Who Usually Takes This Test?
See How You Compare
Below is a preview of how scores are typically distributed across each scale.
Example Questions From the Test
- Does not apply to me at all
- Applies to me just a little
- Applies to me to a moderate degree
- Applies to me somewhat
- Applies to me very much
- Does not apply to me at all
- Applies to me very slightly
- Applies to me moderately
- Applies to me slightly
- Applies to me very strongly
- Does not apply to me at all
- Applies to me only a little
- Applies to me moderately
- Applies to me somewhat
- Applies to me very much
Somatoform Dissociation Questionnaire (SDQ) Test - Description and methodology of the test
People who notice unusual changes in sensation, movement, speech, hearing, vision, pain, or other bodily functions may use this self-report measure to organize what they have experienced. The Somatoform Dissociation Questionnaire (SDQ) Test examines the severity of bodily symptoms associated with dissociative processes. It offers a structured way to reflect on somatoform dissociation symptoms and decide what questions to discuss in a broader evaluation.
What This Assessment Explores
These items examine bodily and sensory experiences rather than one complaint. They cover altered hearing, vision, smell, taste, body perception, numbness, pain, urination, swallowing, speech, movement, freezing, and seizure-like episodes. The scale assesses the severity of somatoform symptoms associated with dissociative processes.
For people exploring bodily dissociation, this somatoform dissociation test shows how strongly these experiences are endorsed. The scale is Somatoform Dissociation, scored 20-100, with Low 20-29 and Elevated (above threshold) 30-100.
The main themes represented by the items are:
- Sensory changes show altered hearing, vision, smell, taste, or body perception.
- Bodily symptoms capture pain, numbness, urination, swallowing, or absent sensation.
- Motor and speech changes reflect freezing, paralysis-like episodes, or difficulty speaking.
- Arousal experiences include seizure-like episodes and unusual daytime activity without sleep.
The result describes a reported pattern, not the cause of an individual symptom.
Methodology and Scientific Basis
The item themes and five-point response structure are consistent with the published SDQ-20, although findings for that instrument do not establish identical norms or validation for every online presentation. Its original study used clinical item selection and Mokken scale analysis, while a replication examined the stability of its measurement properties. A later scoring paper explains that the total is formed by adding item ratings.
Five ordered response options generally range from not at all or does not apply to very much or very true for me, and are coded from 1 to 5. Higher endorsements therefore increase the total across the set; this is the scoring logic behind the SDQ-20 questionnaire.
Published studies report strong scalability and psychometric support for the instrument, but those findings do not automatically establish identical norms for every translation, interface, or user group. Read the online result as a screening indication rather than a diagnosis: current health, attention to bodily sensations, memory, and response style can influence self-report, and the questionnaire cannot settle medical causes.
- Nijenhuis, E.R.S., Spinhoven, P., van Dyck, R., van der Hart, O., & Vanderlinden, J. (1996). The development and psychometric characteristics of the Somatoform Dissociation Questionnaire (SDQ-20). Journal of Nervous and Mental Disease, 184(11), 688-694. 10.1097/00005053-199611000-00006
- Nijenhuis, E.R.S., Spinhoven, P., van Dyck, R., van der Hart, O., & Vanderlinden, J. (1998). Psychometric characteristics of the somatoform dissociation questionnaire: A replication study. Psychotherapy and Psychosomatics, 67(1), 17-23. 10.1159/000012254
- Nijenhuis, E.R.S. (2010). The Scoring and Interpretation of the SDQ-20 and SDQ-5. Activitas Nervosa Superior, 52, 24-28. 10.1007/BF03379561
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