The program of the experiment was done with REGATE, a software by Romain Zeiliger (see: Zeiliger, R. (2000), 
“A Presentation of Regate, Internet based Software for Experimental Economics,” 
http://www.gate.cnrs.fr/~zeiliger/regate/RegateIntro.ppt, GATE).

Standard sessions were conducted with the 2008 version, while control sessions with the 2009 version (see associated programs).