Submitted for Publication: February 1, 2013; final revision received April 25, 2013; accepted June 23, 2013.
Published Online: November 6, 2013. doi:10.1001/jamapsychiatry.2013.2974.
Study concept and design: Shergill, Bays, Wolpert, Frith.
Acquisition of data: Shergill, Joyce.
Analysis and interpretation of data: Shergill, White, Joyce, Frith.
Drafting of the manuscript: Shergill, White.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Shergill, White, Joyce, Frith.
Obtained funding: Shergill.
Administrative, technical, or material support: Shergill, Bays, Frith.
Study supervision: Shergill, Wolpert, Frith.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by a Medical Research Council New Investigator award to Dr Shergill, developed by the National Institute for Health Research Mental Health Biomedical Research Centre at South London and Maudsley National Health Service Foundation Trust and King’s College London, and further supported by a joint infrastructure grant from Guy’s and St Thomas’ Charity and the Maudsley Charity.
Additional Contributions: We thank all the volunteers for their participation in this study.