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Title: An exploratory investigation into the efficacy and feasibility of a multi-session cognitive bias modification for interpretation (CBM-I) task in a clinical population experiencing social phobia : a single-case series
Author: Clarke, Timothy
Awarding Body: University of East Anglia
Current Institution: University of East Anglia
Date of Award: 2012
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Social phobia is characterised by a tendency to interpret ambiguous social information in a negative of threatening manner. It is predicted that such biases play 'a causal role in the development and maintenance of social phobia. Research suggests that interpretive biases can be modified using a text-based paradigm called Cognitive Bias Modification for Interpretation (CB M-I), and that anxiety can reduce as a result. The efficacy and feasibility of this task as a clinical intervention has not been investigated using a social phobia clinical sample. The present study aimed to satisfy this. Nine participants, presenting to mental health services with social phobia were recruited from waiting lists. A non-concurrent multiple-baseline, single-case design was used to assess efficacy and feedback collected to assess feasibility of self-administered, one-week, daily sessions of CBM-I delivered at home. Measures of social phobia were completed daily during the baseline and intervention phases and change assessed. Secondary outcome measures were assessed for reliable and clinical change prior to CBM-I, post-CBM-I and at one-week follow-up. The results indicated that interpretive biases were reliably modified in eight of the participants and visual inspection of the daily scores showed that five of these participants responded to CBM-I in relation to reduced social phobia scores. Reliable and clinical change for secondary outcome measures of social phobia was mixed. For example, six participants demonstrated reliable improvements in Social Phobia Scale (SPS) scores post-CBM-I and five of these were considered to be clinically significant. Group effect sizes on the primary social phobia outcome measure were high. Results and feedback from participants suggest that CBM-I is a feasible clinical tool. The preliminary nature of these findings is discussed in relation to the literature and suggestions for clinical implications and future research are made.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (D.Clin.Psy.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available