r. It has an internal reliability rating on Cronbach's alpha of .90, it is also valid as it is highly correlated with trait and state anxiety of dental patients, as well as identifying dental avoidance (Malouff & Schutte, 1995).
             I also used a Subjective Unit of Discomfort Scale (SUDS). The SUDS is a scale of anxiety scores that may range from 0 to 100 or 0 to 10 (Spiegler and Guevremont, 2003). The individual formulates these scores in relation to specific situations, and places 0 as their lowest anxiety level and 100 as their highest anxiety level, with all in between scores ranging on this continuum (Spiegler and Guevremont, 2003). John and myself devised 10 dental related situations and these where rated hierarchically by John using SUDS, with the first one eliciting the lowest, and the last the highest, shown in Appendix 2. The SUDS scores were then revisited at the end of each therapy week and where re-rated. Averages where then compared.
             Therapy was conducted over six weeks, with four to five sessions a week each lasting about an hour. At the start of therapy I addressed a concern of John's, that he felt a loss of control whilst in the dentists care. To subside his worries, and inform him about dental work, I purchased pamphlets and gave Internet sites regarding dentistry, as this has been suggested to deplete control problems by Chapman & Kirby-Turner (1999). Marks (1987) also proposes enlisted a local dentists help, who I asked if John would be able to raise his hand if he wanted to stop treatment, so he feels more in control of treatment. He agreed to this and John was info
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