The Flynn effect in neuropsychological assessment.

The Flynn effect refers to the rise in IQ throughout the 20th century. This study examined whether the Flynn effect has also elevated performance on neuropsychological tests. A search of published norms revealed five tests with appropriate normative data available for comparison. These tests were the Trail-Making Test (TMT), Symbol Digit Modalities Test (SDMT), Boston Naming Test, Finger Tapping, and Grooved Pegboard. Results indicated a strong Flynn effect for Parts A and B of the TMT and a probable Flynn effect for the oral SDMT. No Flynn effect was evident for the other tests. Implications for clinical assessment are discussed.