Göthe, Oberauer, and Kliegl (2007) compared younger and olde…

Göthe, Oberauer, and Kliegl (2007) compared younger and older adults in two tasks. One task was a visual-motor task in which participants had to mentally track the location of an arrow as it moved to various marked locations on a computer screen. The second task was a simple numerical task, that is, to add a number to a pre-existing sum every time the participant heard a tone. They found that: