SOCIAL NETWORKS AND MENTAL HEALTH: RELATING CURRENT AND LIFETIME PSYCHIATRIC DIAGNOSIS TO CHARACTERISTICS OF SOCIAL NETWORKS by Y. Kalish 1 , G. Robins 2 , P. Pattison 2 H. Jackson 2 , F. Judd 4 , A. Komiti 4 G. Murray 3, C. Fraser 4 , A. Wearing 2 Working Paper No 7/2009 March 2009 1 Faculty of Management, Tel Aviv University, Israel. 2 Department of Psychology, University of Melbourne, Australia. 3 School of Social and Behavioural Sciences, Swinburne University of Technology, Australia. 4 School of Psychology, Psychiatry and Psychological Medicine, Monash University, Australia. Corresponding author: Yuval Kalish, Faculty of Management, Tel Aviv University, Israel. Email: yuvalk@post.tau.ac.il This paper was partially financed by the Henry Crown Institute of Business Research in Israel. The Institute’s working papers are intended for preliminary circulation of tentative research results. Comments are welcome and should be addressed directly to the authors. The opinions and conclusions of the authors of this study do not necessarily state or reflect those of The Faculty of Management, Tel Aviv University, or the Henry Crown Institute of Business Research in Israel.