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Employing open/hidden administration in psychotherapy research: A randomized-controlled trial of expressive writing

Tondorf, Theresa and Kaufmann, Lisa-Katrin and Degel, Alexander and Locher, Cosima and Birkhäuer, Johanna and Gerger, Heike and Ehlert, Ulrike and Gaab, Jens. (2017) Employing open/hidden administration in psychotherapy research: A randomized-controlled trial of expressive writing. PLoS ONE, 12 (11). pp. 1-14.

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Official URL: http://edoc.unibas.ch/58269/

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Abstract

Psychotherapy has been shown to be effective, but efforts to prove specific effects by placebo-controlled trials have been practically and conceptually hampered. We propose that adopting open/hidden designs from placebo research would offer a possible way to establish specificity in psychotherapy. Therefore, we tested the effects of providing opposing treatment rationales in an online expressive writing intervention on affect in healthy subjects. Results indicate that it was possible to conduct the expressive writing intervention both covertly and openly, but that participants in the hidden administration condition did not fully benefit from the otherwise effective expressive writing intervention in the long-run. Effect sizes between open and hidden administration groups were comparable to pre-post effect sizes of the intervention. While this finding is important for the understanding of psychotherapy's effects per se, it also proves that alternative research approaches to establish specificity are feasible and informative in psychotherapy research.; German Clinical Trials Register DRKS00009428.
Faculties and Departments:07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Klinische Psychologie und Neurowissenschaften > Klinische Psychologie und Psychotherapie (Gaab)
UniBasel Contributors:Locher, Cosima and Tondorf, Theresa and Birkhäuer, Johanna and Gerger, Heike and Gaab, Jens
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Public Library of Science
e-ISSN:1932-6203
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:31 Aug 2018 06:38
Deposited On:16 Aug 2018 14:17

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