Literature points to incremental performance in attention up until young adulthood, followed by significant losses arising from the aging process. In this context, the aim of this research was to ascertain proof of validity based on the age variable for the Divided Attention Test, based on the hypothesis that an increase in age would correspond to a decrease in the ability to divide attention. A total of 878 individuals took part from the states of Bahia and Sergipe and were undergraduates or individuals and that had undergone psychological assessment of drivers. Ages varied from 18 to 72 years old (M=26.74, SD=8.14). Men comprised 51.82% of the total. The instrument was applied collectively in the state of Sergipe, and individually in Bahia. Results showed significant, negative correlation between the Divided Attention Test scores and people's age. Analysis of variance showed significant differences between ages and, based on this, three age groups were formed that were differentiated by Tukey's test. Based on the results, it was concluded that there was evidence of validity for the Divided Attention Test based on age difference.
Divided attention; Psychological test; Test validety
