“…Tokens have a long history of being used in the laboratory as reinforcers for both humans (Byron, Himoff, Catania, & Sagvolden, 1977;Critchfield, Paletz, Macaleese, & Newland, 2003;King & Logue, 1990;Silberberg et al, 2008;Weiner, 1962Weiner, , 1963Weiner, , 1969a and nonhuman animals Cowles, 1937;Hackenberg, 2009;Kelleher, 1956Kelleher, , 1958Malagodi, 1967a, b, c;Webbe & Malagodi, 1978;Wolfe, 1936). Token schedules of reinforcement also underlie both monetary systems and critical components of behavior-management programs across numerous applied settings (e.g., Ayllon, & Azrin, 1968;Conyers et al, 2004;DeLeon, Bullock, & Catania, 2013;Fox, Hopkins & Anger, 1987;Kahng, Boscoe, & Byrne, 2003;Kazdin, 1982;Kazdin & Bootzin, 1972;Phillips, 1968).…”