Warner Schaie Determined That You Are Most Likely to Stay

Warner Schaie determined that you are most likely to stay mentally sharp in old age if you

A) are single, divorced, or never married.
B) decrease your perceptual processing speed by avoiding mentally taxing tasks.
C) dissatisfied with your accomplishments at mid-life and continue to strive to accomplish the goals you set as a young adult.
D) are educated and have a sufficient income.