Submitted on: 08 December 1998.
Revised on: 11 January 1999.
Accepted on: 25 January 1999.
___________________Journal of Happiness Studies---SPRINGER
Submitted on: 18 May 2012.
Revised on: 30 August 2012.
Accepted on: 30 September 2012.
___________________Journal of Happiness Studies---SPRINGER
Submitted on: 06 October 2008.
Revised on: 27 October 2008.
Accepted on: 12 November 2008.
___________________Journal of Happiness Studies---SPRINGER
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http://reply.papertrans.cn/2/172/17113/17113-35.png
Submitted on: 24 November 1999.
Revised on: 19 February 2000.
Accepted on: 22 March 2000.
___________________Journal of Happiness Studies---SPRINGER