“…Estes estímulos são referidos como estímulos incidentais (cf Dinsmoor, 1985;. Hull, 1950) ou, mais comumente, como estímulos irrelevantes (cf Carlin, Soraci & Strawbridge, 2003;Dinsmoor, 1985;Dopson, Esber & Pearce, 2010;Elam & Bitterman, 1953;George & Pearce, 1999;. Hall, 1976;Hammer, 1955;Krechevsky, 1932Krechevsky, , 1938Lawrence, 1949Lawrence, , 1950Loess & Duncan, 1952;Mackintosh, 1965Mackintosh, , 1973Mackintosh, , 1974Mackintosh, , 1975Pearce, Esber, George & Haselgrove, 2008;Serna & Carlin, 2001; Spencer, 1936 Spencer, , 1940 Spencer, , 1945Trobalon, Miguelez, McLaren & Mackintosh, 2003;Wortz & Bittermann, 1954;Wagner, Logan, Haberlandt & Price, 1968;Wyckoff, 1952;Zeaman & Denegre, 1967).…”