1,120 responses from 88 respondents to 20 items.
| Description | Somatoform Dissociation Questionnaire – 20-item (German SDQ-20): Assesses somatoform dissociation (body-related dissociative phenomena) over the past 2 weeks |
|---|---|
| Reference | Heekerens, J. B., Biermann, M., Mocarz-Kleindienst, M., Vonderlin, R., Lyssenko, L., Hofmann, V. X., ... & Kleindienst, N. (2025). The Dissociative Symptoms Scale (DSS): Psychometric properties of scores on a German version in clinical samples. Psychological Assessment. |
| DOI | 10.1037/pas0001432 |
| Licence | CC BY 4.0 |
| Source data | https://zenodo.org/records/14984624 |
| Responses | 1,120 |
|---|---|
| Respondents | 88 |
| Items | 20 |
| Response categories | 5 |
| Responses per respondent | 12.727 |
| Responses per item | 56 |
| Density | 0.636 |
| Longitudinal | FALSE |
| age range | Adult (18+) |
|---|---|
| sample | Clinical |
| construct type | Affective/mental health |
| measurement tool | Survey/questionnaire |
| item format | Likert Scale/selected response |
| primary language(s) | ger |
| construct name | Somatoform Dissociation Questionnaire – 20-item (German SDQ-20) |
This table has item text in the IRW: the wording administered to respondents, not just the response codes.
| Instrument | Somatoform Dissociation Questionnaire – 20-item (German SDQ-20): Assesses somatoform dissociation (body-related dissociative phenomena) over the past 2 weeks |
|---|---|
| Mean words per item | 14.700 |
| Mean characters per item | 84.450 |
| Mean characters per response | 15.800 |
| Flesch-Kincaid grade level | 7.197 |
iditemresp
Or load it directly in R or Python:
# R
install.packages("remotes")
remotes::install_github("itemresponsewarehouse/Rpkg")
library(irw)
df <- irw_fetch("heekerens2025_sdq")
# Python
pip install irw
import irw
df = irw.fetch("heekerens2025_sdq")
@article{Heekerens_2026, title={The Dissociative Symptoms Scale (DSS): Psychometric properties of scores on a German version in clinical samples.}, volume={38}, ISSN={1040-3590}, url={http://dx.doi.org/10.1037/pas0001432}, DOI={10.1037/pas0001432}, number={1}, journal={Psychological Assessment}, publisher={American Psychological Association (APA)}, author={Heekerens, Johannes B. and Biermann, Miriam and Mocarz-Kleindienst, Maria and Vonderlin, Ruben and Lyssenko, Lisa and Hofmann, Valerie X. C. and Carlson, Eve B. and Enning, Frank and Schmahl, Christian and Kleindienst, Nikolaus}, year={2026}, month=jan, pages={e1–e15} }
| IRW version | v407 |
|---|---|
| Redivis dataset | item_response_warehouse_2 v20.0 |
| Redivis dataset DOI | 10.57761/ymk1-v324 |
| Manifest pin for this IRW version | v20.0 |
| Metadata source | irw_meta v24.0 |