Working memory training unlikely to boost IQ
N-back training is designed to constantly apply your working memory while simultaneously challenging it, the result of which causes changes in the neural connections of your brain as any sort of constant practice does. So in this article they're basically saying the concept of neuroplasticity is bullshit. They also didn't specific which working memory training was conducted, as far as we know they could have been doing 2, 3, 4 n-back tests with only visuals rather than including audio as well. Which would be the equivalent of someone exercising using 2 lb dumbbells compared to 20 lb dumbbells.
Plus, IQ wasn't measured as per what the article explains. Skills were overseen but no actual culture-fair measure of Gf was administered. In the conclusion of the article, as an extrapolated guess, they say there is "strong doubt" that working memory tasks can improve cognitive ability.... based on the findings that involved no measure of IQ.