“…Dijksterhuis, 2004;Jones, Pelham, Carvallo, & Mirenberg, 2004;Walther, 2002), evaluative conditioning itself remains poorly understood. Inconsistent empirical findings abound in EC research, such as in the much contested issue of the of the relationship between EC and contingency awareness (Fulcher & Hammerl, 2001;Pleyers, Corneille, Luminet, & Yzerbyt, 2007;Walther & Nagengast, 2006), as in whether an intact amygdala is necessary for EC (Coppens, Vansteenwegen, Baeyens, Vandenbulcke, Van Paesschen, & Eelen, 2006;Johnsrude, Owen, White, Zhao, & Bohbot, 2000), or as in the extent to which EC is resistant to extinction (Baeyens et al, 1988;Lipp, Oughton, & LeLievre, 2003). EC also remains a notably ephemeral phenomenon subject to unexplained failure (for a discussion, see Rozin, Wrezesniewski, & Byrnes' (1999) aptly titled article "The elusiveness of evaluative conditioning"), indicating that its boundary conditions remain poorly understood (De Houwer, Thomas, & Baeyens, 2001).…”