title: Social network analysis of international scientific collaboration on psychiatry research.
abstract: BACKGROUND
  Mental disorder is harmful to human health, effects social life seriously and still brings a heavy burden for countries all over the world. Scientific collaboration has become the indispensable choice for progress in the field of biomedicine. However, there have been few scientific publications on scientific collaboration in psychiatry research so far. The aim of this study was to measure the activities of scientific collaboration in psychiatry research at the level of authors, institutions and countries.
  
  
  METHODS
  We retrieved 36557 papers about psychiatry from Science Ciation Index Expanded (SCI-Expanded) in web of science. Additionally, some methods such as social network analysis (SNA), K-plex analysis and Core-Periphery were used in this study.
  
  
  RESULTS
  Collaboration has been increasing at the level of authors, institutions and countries in psychiatry in the last ten years. We selected the top 100 prolific authors, institutions and 30 countries to construct collaborative map respectively. Freedman, R and Seidman, LJ were the central authors, Harvard university was the central institution and the USA was the central country of the whole network. Notably, the rate of economic development of countries affected collaborative behavior.
  
  
  CONCLUSIONS
  The results show that we should encourage multiple collaboration types in psychiatry research as they not only help researchers to master the current research hotspots but also provide scientific basis for clinical research on psychiatry and suggest policies to promote the development of this area.
authors.affiliation: School of Public Health, Shanxi Medical University, South Xinjian Road, Taiyuan, Shanxi China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Wu
authors.affiliation: School of Public Health, Shanxi Medical University, South Xinjian Road, Taiyuan, Shanxi China.
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Duan
keywords: Collaboration; Psychiatry; SNA