Some people, and the referenced paper, are citing Jaeggi's dual n-back as evidence that interventions can positively affect g(F) (fluid intelligence).
I would like to mention that Jaeggi's results, and working memory training in general, have not been replicated.
The main issue with Jaeggi's experiment, is that proper controls were not used.
For a careful examination, and I would say thorough debunking of Jaeggi's results on dual n-back and g(F) improvement by training working memory, please read:
No Evidence of Intelligence Improvement After Working Memory Training: A Randomized, Placebo-Controlled Study.
Redick, Thomas S.; Shipstead, Zach; Harrison, Tyler L.; Hicks, Kenny L.; Fried, David E.; Hambrick, David Z.; Kane, Michael J.; Engle, Randall W.
Journal of Experimental Psychology: General, Jun 18 , 2012, No Pagination Specified. doi: 10.1037/a0029082
I would like to mention that Jaeggi's results, and working memory training in general, have not been replicated.
The main issue with Jaeggi's experiment, is that proper controls were not used.
For a careful examination, and I would say thorough debunking of Jaeggi's results on dual n-back and g(F) improvement by training working memory, please read:
No Evidence of Intelligence Improvement After Working Memory Training: A Randomized, Placebo-Controlled Study. Redick, Thomas S.; Shipstead, Zach; Harrison, Tyler L.; Hicks, Kenny L.; Fried, David E.; Hambrick, David Z.; Kane, Michael J.; Engle, Randall W. Journal of Experimental Psychology: General, Jun 18 , 2012, No Pagination Specified. doi: 10.1037/a0029082