Submitted on: 13 February 2008.
Revised on: 15 May 2008.
Accepted on: 27 May 2008.
___________________BRITISH JOURNAL OF MATHEMATICAL & STATISTICAL PSYCHOLOGY
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Submitted on: 28 September 2019.
Revised on: 01 December 2019.
Accepted on: 16 December 2019.
___________________BRITISH JOURNAL OF MATHEMATICAL & STATISTICAL PSYCHOLOGY
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Submitted on: 31 January 2007.
Revised on: 27 April 2007.
Accepted on: 21 May 2007.
___________________BRITISH JOURNAL OF MATHEMATICAL & STATISTICAL PSYCHOLOGY
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