Validity and reliability of the revised Polish online and pen-and-paper versions of the Dissociative Experiences Scale (DESR-PL)

Igor Pietkiewicz , Anna Hełka , Radosław Tomalski

Abstract

Objective This study tests psychometric properties of the Polish Dissociative Experiences Scale (DESR-PL) with a revised scoring system and its capacity, alongside its short form (DESR-T), to screen for dissociative disorders. Both pen-and-paper (p&p) and online forms were tested. Method Validity and reliability were examined in a sample of 540 participants in non-clinical (n = 289) and clinical (n = 251) groups, who completed the tests p&p (n = 60) or online (n = 480). The clinical group included 21 patients with dissociative (conversion) disorders, and people with other disorders. The Exploratory Factor Analysis with Principal Component Analysis method of parameter estimation without rotation confirmed unidimensionality of p&p and online versions of DESR-PL and DESR-T. Results Reliability of both versions was corroborated by a Cronbach's alpha coefficient (DESR-PL: online > .931 p&p > .937; DESR-T: online > .783 p&p > .797). The cutoff score maximising sensitivity and specificity for dissociative (conversion) disorders was 71.5 in DESR-PL (sensitivity of 71.43% and specificity of 91.82%) and 16.5 in DESR-T (sensitivity of 76.19% and specificity of 92.73%). People with dissociative disorders had significantly (p < .001) higher scores in DESR-PL and DESR-T than patients with other disorders and non-clinical participants (criterion validity). Both DESR-PL and DESR-T strongly correlated with SDQ-20 and PSDQ-5. Conclusions DESR-PL administrated p&p or online proved to be reliable tools for measuring the levels of dissociation as a continuum between normal experiences and pathological symptoms. DESR-T has similar psychometric properties and can be used effectively for the screening of dissociative disorders.
Author Igor Pietkiewicz (Wydział Psychologii w Katowicach)
Igor Pietkiewicz,,
- Wydział Psychologii w Katowicach
, Anna Hełka (Wydział Psychologii w Katowicach)
Anna Hełka,,
- Wydział Psychologii w Katowicach
, Radosław Tomalski
Radosław Tomalski,,
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Journal seriesEuropean Journal of Trauma & Dissociation, ISSN 2468-7499, (0 pkt)
Issue year2019
Vol3
No4
Pages235-243
Publication size in sheets0.5
Keywords in EnglishDissociative disordersPsychoform dissociationScreeningOnline instrumentsTest reliabilityTest validity
DOIDOI:10.1016/j.ejtd.2019.02.003
Languageen angielski
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Skan oświadczenia Hełka.jpg 5.05 MB
Oświadczenie Pietkiewicz Validity DESRPL.pdf 118.12 KB
2019 Pietkiewicz, Helka, Tomalski - DESR.pdf 505.18 KB
Score (nominal)5
Score sourcejournalList
Citation count*2 (2021-03-06)
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