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An investigation of computer-delivered treatment of spider phobia


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Fraser, Jacqueline 1999 , 'An investigation of computer-delivered treatment of spider phobia', Coursework Master thesis, University of Tasmania.

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LITERATURE REVIEW Specific phobias are persistent fears of circumscribed situations which lead to
avoidance of those situations, impairing daily functioning, even though the fears are
recognised as unreasonable (American Psychiatric Association, 1994). This literature
review looks at the aetiological theories for specific phobias and the corresponding
behavioural treatments that arise from these theories. Where possible research
conducted into spider phobias will be highlighted.
The literature suggests that the behavioural 'exposure' techniques such as
systematic desensitisation and flooding, which require participants to remain in fearful
situations until distress subsides, provide the most effective treatment outcomes.
Exposure treatments can be administered in a number of different modalities, from invivo
to imaginal to virtual reality. Exposure may also be modelled by another to
further facilitate treatment efficacy. All of these modalities are based on the same
principles, such as conditioning experiences and habituation/ extinction of anxiety
responses, which arise from the aetiological theories . A recent trend has been to allow
participants to direct their own exposure therapy as an effective, cost saving alternative
(Marks, 1985). One method of self-directed exposure has been to follow instructions
on self-help style manuals (Marks, 1980).
Another modality for self-directed treatment delivery is computers. Initial research
into computer-delivered treatments have shown statistically significant treatment efficacy.
However this area of research is still relatively new, with interest only being generated
from the late 1980s (Mruk, 1987). One example of computer-delivered treatment currently
being validated is the Fearmaster program. This software has been based on the
empirically validated techniques of modelling and teaches the principles of exposure
therapy. While findings are preliminary, treatment outcomes have been positive enough to
encourage future research. EMPIRICAL STUDY This study investigates the treatment efficacy of an interactive computer program,
called 'Fearmaster', for the treatment of spider phobia, when administered at two different
dosages (three treatment sessions versus six treatment sessions). The Fearinaster (Kirkby,
Watson, & Daniels, 1991) is designed to teach the principles of self exposure via symbolic
modelling technique by allowing participants to practise treating an 'on-screen' computer
person. Thirty participants with spider phobia, meeting DSM-IV criteria for spider phobia
and achieving a CIDI-A diagnosis of Specific phobia, were randomly allocated to receive
either three or six treatment sessions within three weeks (n= 15 per treatment condition).
Phobic symptom severity was measured at pre-treatment, post-treatment (on the same day
as the final treatment session) and at one month follow-up assessment by Spider
Questionnaire, Fear Questionnaire, Phobic Targets and Work Adjustment Rating Scales,
and a live Behavioural Approach Test. The results showed significant symptom reduction
for both groups across treatment, where participants were able to engage in approach
behaviours with less anxiety. Statistically significant reductions occurred in self ratings of
spider phobia symptoms, fear levels, anxiety levels and depression levels. Clinically
significant improvements were obtained in depression levels and ability to perform
approach behaviours towards the phobic stimulus. Results on the Behavioural Approach
Test showed that additional sessions produced a greater treatment effect. A similar trend
was observed on self ratings of spider phobia symptoms but did not reach significance.
Thus six treatment sessions produced better treatment outcomes than three treatment
sessions on behavioural measures. Results indicate further investigation into dosage
effects, employing greater participant numbers is warranted.

Item Type: Thesis - Coursework Master
Authors/Creators:Fraser, Jacqueline
Keywords: Phobias, Phobias, Phobias, Fear
Copyright Holders: The Author
Copyright Information:

Copyright 1999 the Author - The University is continuing to endeavour to trace the copyright
owner(s) and in the meantime this item has been reproduced here in good faith. We
would be pleased to hear from the copyright owner(s).

Additional Information:

Thesis (M.Psych.)--University of Tasmania, 1999. Includes bibliographical references

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