1,120 responses from 88 respondents to 20 items.
One of 7 tables from the same source; this one measures Somatoform Dissociation Questionnaire – 20-item (German SDQ-20). The others are listed under Related tables.
| 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 |
This codebook is reconstructed by the IRW from the IRW data standard. It is our best reading, not the source’s own codebook, and it may contain mistakes. Where the two disagree, the source data are the authority. If you find an error, please tell us.
| Column | What it is | Source column |
|---|---|---|
| IRW standard columns | ||
id | IRW standard Identifier for the focal unit being measured — typically a person, but sometimes another entity (e.g., a word in a lexical task). | not traced |
item | IRW standard Item identifier. | not traced |
resp | IRW standard Response value. | not traced |
What item codes and covariate values stand for is in the codebook released with the source data.
Or load it directly in R or Python (both need a free Redivis account; the first call opens a browser to sign in):
# 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 | v566 |
|---|---|
| Redivis dataset | item_response_warehouse_2 v33.0 |
| Redivis dataset DOI | 10.57761/6m04-m698 |
| Manifest pin for this IRW version | v33.0 |
| Metadata source | irw_meta v43.0 |