Submitted on: 22 March 2004.
Revised on: 28 May 2004.
Accepted on: 21 July 2004.
___________________JOURNAL OF INTELLECTUAL DISABILITY RESEARCH
Submitted on: 19 September 2023.
Revised on: 23 October 2023.
Accepted on: 29 November 2023.
___________________JOURNAL OF INTELLECTUAL DISABILITY RESEARCH
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Submitted on: 21 November 2004.
Revised on: 10 January 2005.
Accepted on: 07 March 2005.
___________________JOURNAL OF INTELLECTUAL DISABILITY RESEARCH
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Submitted on: 20 March 1998.
Revised on: 30 April 1998.
Accepted on: 09 June 1998.
___________________JOURNAL OF INTELLECTUAL DISABILITY RESEARCH