In previous research, Gavin, Roche and Ruiz (2008) demonstrated that Implicit Association Test effects can be modeled in the laboratory in the form of a test that establishes competing contingencies for derived relational responding. The current study replicates and extends this finding by firstly establishing a laboratory-controlled IAT effect using nonsense syllables as stimuli, and then eliminating that effect with a simple experimental intervention. Eight subjects were exposed to an equivalence training procedure that led to the formation of two three-member equivalence relations each containing three nonsense syllables. Subjects were then exposed to a word-picture association training phase in which one member of each of the equivalence relations, printed in blue or red font, was paired with either plant or animal images, respectively. Subjects were then exposed to a modified Implicit Association Test whose outcome was successfully controlled by the organization of the trained relations. Following a stimulus equivalence re-training procedure that reorganized the stimulus equivalence relations, the IAT effect was eliminated for five of the six subjects who showed reorganization of the equivalence class and the associated derived transfer of functions. These findings lend additional support to a behavior-analytic account of the Implicit Association Test.