Feasibility Randomized Controlled Trial Using a 'Leapfrog' Design

The imagery cognitive bias modification intervention is derived from that developed via experimental psychopathology research (e.g. Holmes et al., 2009) and adapted for clinical applications in the context of depression (e.g. Blackwell \& Holmes, 2010; Blackwell et al., 2015). The intervention is a series of training sessions in which participants listen to training scenarios consisting of descriptions of everyday situations, structured so that they start ambiguously but always end positively. Participants are instructed to imagine themselves in the situations described as the scenarios unfold. It is hypothesised that via repeatedly practising imagining positive resolutions for ambiguous situations in the training sessions, a bias is trained to automatically imagine positive resolutions for ambiguous situations encountered in daily life.