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• The volume of mental health research publication output is growing faster than that in biomedicine or science as a whole.
• There is a convergence in the volume of mental health research publication output between the US and Europe, with the recent emergence of mental health research publication output in the BRIC countries.
• Smaller countries such as Sweden, Israel, The Netherlands and Finland are the most productive in terms of number of publications per capita.
• Countries with greater specialisation in mental health research, such as the US, the UK, Canada and The Netherlands, generally have higher scientific impact.
• Spain, France, South Korea, Japan and Turkey obtain fewer citations than the world average for mental health publications and publish fewer mental health publications than one would expect, given the volume of their overall publication output.
• Over the last 25 years, we observe a tendency towards publishing more basic research outputs in mental health. The only exception to this is The Netherlands.
• Mental health research publications are increasingly the result of international collaboration. While 3% of all mental health papers published in 1980 was the result of an international collaboration, that percentage was 20% in 2008.
• Countries/regions with a relatively large volume of research output — such as the US, the EU and Japan — tend to obtain relatively low international collaboration rates. This is not surprising as it is more difficult for researchers from a bigger country to find collaborators outside their borders.
• The strongest bilateral relationship in mental health research is between Canada and the US, followed by the UK and the US, Germany and the US, and Italy and the US.
• We observe a strong growth of research on autism, anxiety, bipolar disorders, hyperactivity, memory, schizophrenia, sleep and stress since the early 1980s.

This report presents the findings of a bibliometric study of mental health research papers published from 1980 to 2008. The aim of this study was to map mental health research in the G20 and other leading countries in order to analyse i) the research productivity of nations; ii) the relative intensity of research; iii) the level of research (clinical or basic); iv) levels of scientific impact; and v) levels of collaboration. The work presented in this paper is the result of a collaboration between Observatoire des sciences et des technologies in Montreal and RAND Europe.

• Chapter One

  Methods

• Chapter Two

  Results

• Chapter Three

  Concluding remarks

• Appendix A

  Journals categorised in psychiatry by both CHI Research and Thomson Reuters

• Appendix B

  Journals categorised in psychiatry by CHI Research, but not by Thomson Reuters

• Appendix C

  Journals categorised in psychiatry by Thomson Reuters, but not by CHI Research

• Appendix D

  Journals in which 75% of the papers have a mental health MeSH term, but to which neither CHI Research nor Thomson Reuters assign psychiatry as the discipline

• Appendix E

  Number of papers of countries in mental health, 1980–2008