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Submitted on: 31 October 2003.
Revised on: 16 January 2004.
Accepted on: 15 March 2004.
___________________JOURNAL OF APPLIED BEHAVIOR ANALYSIS
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Submitted on: 14 January 2017.
Revised on: 06 February 2017.
Accepted on: 24 February 2017.
___________________JOURNAL OF APPLIED BEHAVIOR ANALYSIS
Submitted on: 14 February 2012.
Revised on: 10 June 2012.
Accepted on: 03 August 2012.
___________________JOURNAL OF APPLIED BEHAVIOR ANALYSIS
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Submitted on: 12 January 2014.
Revised on: 02 February 2014.
Accepted on: 10 March 2014.
___________________JOURNAL OF APPLIED BEHAVIOR ANALYSIS
Submitted on: 18 May 2011.
Revised on: 29 August 2011.
Accepted on: 25 September 2011.
___________________JOURNAL OF APPLIED BEHAVIOR ANALYSIS