Objective: The effects of uterine exposure to cocaine and many other substances have been studied, and many such teratogens, including methamphetamine, seem to affect frontal (executive) functioning, perhaps because this is about the last higher cortical area to fully develop. However, right hemisphere cortical functioning (gestaltic functioning NVLD) may well also be susceptible to such exposure. Method: Therefore, the offspring of 60 women who abused methamphetamine while pregnant were evaluated and compared to 71 children without such history (aged 6 to 13). The samples were balanced with regard to age and sex. The participants were evaluated on some gestaltic tasks (the Street Completion Test and the Hooper Visual Organization Test as well as a more general test of intellectual function, the Slossen Intelligence Test (3rd Ed.) Trails A was also administered. Results: The group exposed early to methamphetamine scored significantly worse on each of the purported gestaltic/right hemisphere tasks. The...

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