“…Finally, similar arguments to those levelled at verification procedures in the single-word semantic priming literature (i.e., lexical decision tasks) can be made with regard to those employed in studying simple arithmetic. Specifically, it has been suggested that 'attentional' decision processes, that occur after the simple matching of a stimulus with its lexical representation, may confound the overall reaction time measured in the lexical decision task Friedrich, Henik & Tzelgov, 1991;Lorch, Balota & Stamm, 1986;Neely, 1991;Sereno, 1991;Slowiaczek, 1994;Smith, Besner & Myoshi, 1994). In the case of the aforementioned studies then, it could be argued that the requirement to actively make a binary decision as to the relationship between the prime and the target might interfere with the automatic processes, essentially thought to occur without intention or awareness, that they purport to measure.…”