Oxford University Press, International Journal of Neuropsychopharmacology, 05(9), p. 631, 2006
DOI: 10.1017/s1461145706007085
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Collie et al. (2006) address important design limitations of our study (Bender et al., 2006). We entirely agree with Collie and colleagues that any performance improvement in the course of repeated testing of executive function may partially reflect practice effects in addition to concurrent treatment effects.