“…Arcediano, Ortega, and Matute (1996) developed the "Martians" game to explore classical conditioning using Martians and explosions as stimuli (see also Baeyens et al, 2005;Blanco, Matute, & Vadillo, 2010;Franssen, Clarysse, Beckers, van Vooren, & Baeyens, 2010). Gamelike tasks have been used to study instrumental learning with stimuli presented as balloons that must be shot from the sky (Krageloh, Zapanta, Shepherd, & Landon, 2010), minefields to be navigated (Baker, Mercier, Vallee-Tourangeau, Frank, & Pan, 1993), or a host of similar examples (Lie, Harper, & Hunt, 2009;Molet, Jozefowiez, & Miller, 2010;Paredes-Olay, Abad, Gamez, & Rosas, 2002;Stokes & Balsam, 2001;Stokes & Harrison, 2002). Discrimination and generalization learning have been presented as melodies that participants must classify as belonging to different composers (Artigas, Chamizio, & Peris, 2001) or as torpedoes to be launched at certain flying objects but not others (Nelson & Sanjuan, 2008;Nelson, Sanjuan, Vadillo-Ruiz, & Perez, 2011).…”