Positive outlook predicts less memory decline.

ISLAMABAD -- We may wish some memories could last a lifetime, but many physical and emotional factors can negatively impact our ability to retain information throughout life. A new study found that people who feel enthusiastic and cheerful -- what psychologists call "positive affect" -- are less likely to experience memory decline as they age. This result adds to a growing body of research on positive affect's role in healthy aging. A team of researchers analyzed data from 991 middle-aged and older U.S. adults who participated in a national study conducted...