Simply Imagining Sunshine, Lollipops and Rainbows Will Not Budge the Bias: The Role of Ambiguity in Interpretive Bias Modification.

"Emily A. Holmes and Simon E. Blackwell are supported by the Medical Research Council (United Kingdom) intramural programme [MC-A060-5PR50] and a grant from the Lupina Foundation. Emily A. Holmes is also supported by a Wellcome Trust Clinical Fellowship [WT088217], and the National Institute for Health Research (NIHR) Oxford Biomedical Research Centre based at Oxford University Hospitals NHS Trust, Oxford University [REF A93182]. The views expressed are those of the author(s) and not necessarily those of the NHS, the NIHR or the Department of Health. Funding to pay the Open Access publication charges for this article was also provided by the UK Medical Research Council. Colin MacLeod is supported by Australian Research Council Grant DP0879589, and by a grant from the Romanian National Authority for Scientific Research, CNCS–UEFISCDI, project number PNII-ID-PCCE-2011-2-0045."