Submitted on: 28 September 2008.
Revised on: 02 December 2008.
Accepted on: 31 January 2009.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
Submitted on: 04 July 2014.
Revised on: 19 October 2014.
Accepted on: 04 December 2014.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
Submitted on: 17 November 2014.
Revised on: 14 December 2014.
Accepted on: 18 January 2015.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
Submitted on: 27 October 1998.
Revised on: 30 December 1998.
Accepted on: 11 January 1999.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
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Submitted on: 31 December 2024.
Revised on: 19 March 2025.
Accepted on: 08 April 2025.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
Submitted on: 14 November 2016.
Revised on: 12 March 2017.
Accepted on: 11 April 2017.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
Submitted on: 08 November 1999.
Revised on: 21 December 1999.
Accepted on: 31 January 2000.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
Submitted on: 22 November 2016.
Revised on: 24 February 2017.
Accepted on: 16 March 2017.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities
Submitted on: 16 April 2008.
Revised on: 11 August 2008.
Accepted on: 16 September 2008.
___________________AJIDD-American Journal on Intellectual and Developmental Disabilities