Investigating co-authorship rate of Iranian researchers in Psychology field in Islamic World Science Citation Database between 2007-2011

This research aims to study the extent of co-authorship of Iranian researchers in Psychology field in Islamic World Science Citation Database during 2007-2010.
Descriptive-analytical method and scientometric tools are applied. Islamic World Science Citation Database is the research tool, and Excel software is applied to input and compute the data. The research population is all the articles indexed in Psychology field in Islamic World Science Citation Database during 2007-2011. Collaborative Index, Degree of Collaboration, and Co-authorship Coefficient for Psychology field were calculated.
Findings: The documents with four authors, with 0.32 growth rate, have the most growth in comparison to documents with other co-authorship patterns. Co-authorship Coefficient of authors in the given period is 0.54 and the largest co-authorship Coefficient is related to 2010 with 0.59. The average of Degree of Collaboration in the given period is 0.83.
It can be concluded that psychology researchers tend to write articles with the cooperation of other authors, so as the number of psychology articles increases, the number of articles having just one author decreases.