THE BRAIN AND MULTITASKING

UCI cognitive scientist Mark Steyvers studies how online training enables seniors to multitask mentally on par with those 50 years younger
 

Multitasking is a valuable skill, particularly in today’s daily information onslaught. But constantly divided attention can be quite mentally taxing, most notably for older adults. A UCI-led study has found that online brain game exercises can enable people in their 70s and even 80s to cognitively compete with individuals 50 years their junior.

“The brain is not a muscle, but like our bodies, if we work out and train it, we can improve our mental performance,” said lead author Mark Steyvers, a UCI professor of cognitive sciences. “We discovered that people in the upper age ranges who completed specific training tasks were able to beef up their brain’s ability to switch between tasks in the game at a level similar to untrained 20- and 30-year-olds.”

The findings, published in Proceedings of the National Academy of Sciences, underscore the cognitive cost of multitasking, which dilutes function by splitting focus, as well as the ways in which people across the lifespan can overcome the brain drain brought on by both the increasingly cluttered multimedia environment and the natural aging process.

For the study, Steyvers and his colleagues partnered with Lumosity, an online platform that offers a variety of daily brain training games. They focused on data from “Ebb and Flow” – a task-switching game that challenges the brain’s ability to shift between cognitive processes interpreting shapes and movement.

Of the millions of people who played the game between 2012 and 2017, researchers randomly sampled the performance of about 1,000 users within two categories: those who ranged in age from 21 to 80 and had completed fewer than 60 training sessions; and adults 71 to 80 who had logged at least 1,000 sessions.

They found that the majority of older and highly practiced players were able to match or exceed the performance of younger users who had not played very much. However, any lead seniors had on their younger counterparts significantly declined after the 21- to 30-year-olds completed at least 60 practice sessions, showing that training can improve mental “muscles” of all ages.

“Medical advances and improved lifestyles are allowing us to live longer,” Steyvers said. “It’s important to factor brain health into that equation. We show that with consistent upkeep, cognitive youth can be retained well into our golden years.” •