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One Thing Prevents Memory Decline

Oct 29, 2020

Association for Psychological Science – 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 in the journal Psychological Science 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 at three time periods: between 1995 and 1996, 2004 and 2006, and 2013 and 2014.

In each assessment, participants reported on a range of positive emotions they had experienced during the past 30 days. In the final two assessments, participants also completed tests of memory performance.

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These tests consisted of recalling words immediately after their presentation and again 15 minutes later.

The researchers examined the association between positive affect and memory decline, accounting for age, gender, education, depression, negative affect, and extraversion.

“Our findings showed that memory declined with age,” said Claudia Haase, an associate professor at Northwestern University and senior author on the paper. “However, individuals with higher levels of positive affect had a less steep memory decline over the course of almost a decade,” added Emily Hittner, a PhD graduate of Northwestern University and the paper’s lead author.

Areas of future research might address the pathways that could connect positive affect and memory, such as physical health or social relationships.

Reference: Hittner, E. F., Stephens, J. E., Turiano, N. A., Gerstorf, D., Lachman, M. E., & Haase, C. M. (2020). Positive affect is associated with less memory decline: Evidence from a 9-year longitudinal study. Psychological Science. Advance online publication. https//doi.org/10.1177/0956797620953883

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