FIGURE 5-9 Prenatal Hg exposure concentrations (in quartile groups) of Faroe Island children with scores in the lowest quartile after adjustment for confounders. For each of five major cognitive functions, one neuropsychological test with a high psychometric validity was selected. Motor: neurobehavioral evaluation system 2 (NES2) finger tapping with preferred hand (p value for trend, 0.23). Attention: Reaction time on the NES2 continued performance test (p = 0.003). Visual-spatial: Bender visual motor gestalt test error score (p = 0.16). Language: Boston Naming Test score after cues (p = 0.02). Memory: California Verbal Learning Test — Children long-delay recall (p = 0.004). Source: Adapted from Grandjean et al. 1997.