Submitted for Publication: November 25, 2013; final revision received February 21, 2014; accepted March 24, 2014.
Published Online: June 11, 2014. doi:10.1001/jamapsychiatry.2014.655.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: Waszczuk, Zavos, Eley.
Drafting of the manuscript: Waszczuk.
Critical revision of the manuscript for important intellectual content: Zavos, Gregory, Eley.
Statistical analysis: Waszczuk, Zavos.
Obtained funding: Gregory, Eley.
Study supervision: Zavos, Eley.
Conflict of Interest Disclosures: None reported.
Funding/Support: Both the Emotions, Cognitions, Heredity and Outcome and Genesis 12-19 studies were supported by a Medical Research Council Training Fellowship and a Career Development Award given to Prof Eley. Waves 1 through 3 of the Genesis 12-19 Study were also funded by the W. T. Grant Foundation, the University of London Central Research fund, and wave 4 was supported by the Economic and Social Research Council (RES-000-22-2206), the Institute of Social Psychiatry, and a Leverhulme Research Fellowship awarded to Dr Gregory. Ms Waszczuk was supported by a PhD studentship awarded by the Alexander von Humboldt Foundation. This study presents independent research partly funded by the National Institute for Health Research (NIHR) Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King’s College London.
Role of the Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Disclaimer: The views expressed in this article are those of the authors and not necessarily those of the NHS, the NIHR, or the Department of Health.
Additional Contributions: We thank the families for their participation as well as numerous staff and students from the Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, London and Goldsmiths, University of London.