 4. Vividness Scale - Barrowcliff et al. 2004 found eye movements to produce a greater reduction in arousal and vividness for memories associated with fear and anxiety compared with an eye stationary condition using physiological measures of arousal. It has also been found that eye movements resulted in reduced ratings of distress and vividness compared to a no eye movement condition Kavanagh et al, 2001. Therefore this study will inform the degree of vividness associated with a particular image by asking the patient to hold the image in mind for ten seconds and then indicate on a ten centimetre visual analogue scale the degree to which the image appeared vivid from not clear at all to very clear. The scale will contain more than two anchors to provide individuals with greater clarity. This is identical to a procedure used in previous studies on vividness van den Hout et al., 2001. This will be administered during their 2 treatment sessions. 