Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Results of the reading span test and the Stroop test as a function of age. The interference score is calculated as 60, subtracted by the difference score between the incongruent and congruent tasks. Regression lines with confidence intervals (shaded areas) show a linear decline in cognitive performance with advancing age for both cognitive tests (color-coded).
