Neuropsychological test performances with chronic low-level formaldehyde exposure

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Abstract
Thirteen persons with chronic low-level formaldehyde exposure in domestic environments were administered a comprehensive battery of neuropsychological tests after removal from the environments for several months. The formaldehyde exposure group was group-matched by sex, age, and education with control and mild head-injury groups, and test results compared using one-way ANOVA and MANOVA (n = 13 for each group). Results indicate that the formaldehyde-exposed group is significantly different from the mild head-injury group and similar to the control group on the neuropsychological measures. Comparisons between the groups on the Minnesota Multiphasic Personality Inventory indicate emotional reactions and somatic concerns for both the formaldehyde and the head-injured groups. There is a need for further research with larger groups and with assessment at intervals during various time periods including the exposure phase.