Worth to play brain games?

Think you can make yourself smarter with brain-training software? New studies suggest that so-called brain games don't improve players' thinking or IQ, they just make you better at playing the games, the New Yorker reported.

The studies come after of a decade of spotty research suggesting that brain games do work--and the launch of companies such as Cogmed, Lumosity, Jungle Memory and CogniFit that sell brain games for kids, older adults and everyone in between. The New Yorker talked with Cogmed executives, who insisted the new research was flawed. Meanwhile, the researchers involved in the skeptical studies say it's unethical to sell software that doesn't work, especially to vulnerable audiences such as kids with learning disorders or older adults worried about cognitive decline.

The skeptical studies include:

    1.A study comparing dual n-back training--a favorite training program among avid self-improvers in Silicon Valley--with a placebo game and with not playing any games at all in healthy young adults. The researchers, from three different U.S. universities, found the games improved people's ability in the games.. but not in independent tests of fluid intelligence, crystallized intelligence, multitasking or other capabilities.
    2.A study that tried to replicate previous research showing that certain mental exercises improved fluid intelligence, which is important to learning and is associated with professional success. The newer study wasn't able to reproduce the effects of the previous experiments.
    3.A so-called "meta-analysis" that reviewed 23 previous studies of brain games, weighting the studies by how rigorous they were and how many study participants they included. Like the other skeptical studies, the meta-analysis found that people just got better at the games they played, but their skills didn't transfer elsewhere, such as people's verbal and nonverbal ability, arithmetic, or attention.

The New Yorker covered the objections brain-game company Cogmed had with the studies' conclusions. Neuroscientist Torkel Klingberg, who led a brain-games study in 2002 that showed the games did work for children and is now a paid Cogmed consultant, also said the meta-analysis was poorly done, though reporter Gareth Cook pointed out that it the analysis was published in one of the field's top journals.

One thing that the New Yorker piece doesn't do is distinguish between how brain games work for normally developing kids, kids with learning disabilities, normally developing adults, and adults with diagnosed cognitive decline. The stakes are different for each group, so it'd be helpful to know if there are differences. It may be that the science doesn't yet exist for such a detailed breakdown: Skeptical Studies No. 1 and No. 2 were performed in normally developing adults, while the meta-analysis looked at studies about brain games performed in all kinds of people.


/Popsci.Com/