"What I believe is true": Belief-confirming reasoning bias in social anxiety disorder.
Research shows that people tend to consider believable conclusions as valid and unbelievable conclusions as invalid (belief bias). When applied to anxiogenic beliefs, this belief bias could well hinder the correction of dysfunctional convictions. Previous work has shown that high socially anxious students indeed display such fear-confirming, belief biased, reasoning. A critical next question is whether these findings translate to a clinical population of people with social anxiety disorder (SAD). We test whether (i) patients with SAD show belief bias with regard to SAD-relevant themes, (ii) this belief bias is specific for SAD patients or can also be found in panic disorder (PD) patients, (iii) differential belief bias effects in SAD are restricted to social anxiety concerns or are also evident in the context of reasoning with neutral themes.



45 SAD patients, 24 PD patients, and 45 non-symptomatic controls (NSCs) completed a syllogistic belief bias task with SAD-relevant and neutral content.



SAD patients displayed belief bias for social anxiety related materials, while the PD group and the NSC group did not. Yet, the difference between SAD and PD was not significant. All groups showed similar belief bias effects for neutral content.



Content of the belief bias task was not tailored to idiosyncratic beliefs. The study lacked power to detect medium or small differences.



SAD patients showed concern-congruent belief biased interference effects when judging the logical validity of social anxiety relevant syllogisms. Such concern-relevant belief bias may contribute to the persistence of anxiogenic beliefs.
Department of Clinical Psychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands; NijCare: Nijmegen Centre for Anxiety Research and Expertise, Postbus 9104, 6500 HE, Nijmegen, The Netherlands; Amarum, Expertise Centre for Eating Disorders (Part of GGNet), Den Elternweg 75, 7207 AE, Zutphen, The Netherlands. Electronic address: m.vroling@ggnet.nl.
Maartje S
MS
Vroling
Department of Clinical Psychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands; Center for Eating Disorders, Accare, Child and Adolescent Psychiatry, Fazantenlaan 1, 9422 EZ, Smilde, The Netherlands. Electronic address: k.a.glashouwer@rug.nl.
Klaske A
KA
Glashouwer
NijCare: Nijmegen Centre for Anxiety Research and Expertise, Postbus 9104, 6500 HE, Nijmegen, The Netherlands; Department of Clinical Psychology, Radboud University of Nijmegen, Postbus 9104, 6500 HE, Nijmegen, The Netherlands. Electronic address: g.lange@psych.ru.nl.
Wolf-Gero
WG
Lange
NijCare: Nijmegen Centre for Anxiety Research and Expertise, Postbus 9104, 6500 HE, Nijmegen, The Netherlands; Overwaal, Centre for Anxiety Disorders, Tarweweg 2, 6534 AM, Nijmegen, The Netherlands. Electronic address: e.allart@propersona.nl.
Esther
E
Allart-van Dam
Department of Clinical Psychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, The Netherlands. Electronic address: p.j.de.jong@rug.nl.
Peter J
PJ
de Jong
D000328:Adult; D000704:Analysis of Variance; D015982:Bias; D003469:Culture; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016584:Panic Disorder / Q000503:physiopathology / Q000523:psychology; D000072861:Phobia, Social / Q000503:physiopathology* / Q000523:psychology*; D011569:Psychiatric Status Rating Scales; D013850:Thinking / Q000502:physiology*
Anxiety disorder; Belief bias; Panic disorder; Reasoning; Social anxiety disorder