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Submitted on: 01 March 2004.
Revised on: 18 April 2004.
Accepted on: 13 June 2004.
___________________International Journal of Educational Psychology
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Submitted on: 31 July 2017.
Revised on: 16 October 2017.
Accepted on: 20 November 2017.
___________________International Journal of Educational Psychology
Submitted on: 20 November 2012.
Revised on: 29 December 2012.
Accepted on: 03 February 2013.
___________________International Journal of Educational Psychology
Submitted on: 31 July 2002.
Revised on: 13 September 2002.
Accepted on: 02 October 2002.
___________________International Journal of Educational Psychology