According to Schaie, old age marks a period in which people no longer focus on acquiring knowledge to solve potential problems, but rather focus on acquiring information directed toward issues of personal interest. He calls this stage the?

reintegrative

Explanation:

Reintegrative stage: In psychology, the reintegrative stage is one of the stages in the Schaie's theory of cognitive development. It is defined as the stage that occurs in the late adulthood period of an individual's life in which he or she aims at tasks that are said to possess personal meaning.

At this stage, an individual who has entered the retirement phase reorganizes his or her life and intellectual energies towards a meaningful aspect that leads to work being paid.

In the question above, Schaie calls this stage the reintegrative stage.