Abstract
A psychological test battery was administered to a group of 43 rotogravure printers exposed to toluene (mean age 41 years, mean duration of exposure 22 years) and to a referent group comprising 31 offset printers of the same age. Eighteen of the rotogravure printers and one of the referents were heavy drinkers of alcohol. The test battery included tests for verbal and visual cognition and memory, perceptual motor speed, and psychomotor abilities. A vocabulary test (Synonyms) was used as a measure of initial intelligence. Performances in the two groups were compared, and descriptive data analyses were made in four subgroups formed according to toluene exposure and drinking habits. The rotogravure printers performance was inferior to the referents in tests measuring visual cognitive abilities. The mean test performances in the subgroups indicated that the difference in drinking habits did not explain the differences: the heavy drinkers tended to perform better than those with more moderate drinking habits. An antagonistic interaction between toluene and alcohol was suggested by intact performances among the heavy drinkers with high exposure (n = 8). The question deserves to be investigated further.
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