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. Author manuscript; available in PMC: 2006 Jan 25.
Published in final edited form as: Psychol Sci. 2005 Mar;16(3):200–207. doi: 10.1111/j.0956-7976.2005.00804.x

Fig. 1.

Fig. 1

Effects of allelic variation in the CHRNA4 gene on visuospatial attention in the 2,000-ms stimulus-onset asynchrony condition and on working memory: (a) reaction time (RT) benefits of valid location cues in the visuospatial attention task (neutral RT – valid RT), (b) RT costs of invalid location cues in the same task (invalid RT – neutral RT), and (c) match accuracy in the working memory task as a function of number of spatial locations to be maintained in working memory. The three genotypes TT, TC, and CC correspond to increasing gene dose (0, 1, 2) of the C allele of the CHRNA4 gene.