Fig. 1.
Path diagram of the structural equation model that was used to determine the overall effect of prenatal methylmercury exposure on verbal functions, as expressed by a series of verbally mediated neuropsychological test results, and adjusted for confounders (H-Hg = maternal hair-mercury concentration; B-Hg = cord-blood mercury concentration; Whale = frequency of whale meat dinners during pregnancy; BNT = Boston Naming Test without and with cues; SIMILAR = WISC-R Similarities; and CVLT = California Verbal Learning Test scores for learning, short-term recall, long-term recall, and recognition).