The key study cited by the article is available in full as a PDF. Jaeggi, Buschkuehl, Jonides, and Perrig (2008), Improving Fluid Intelligence with Training on

The key study cited by the article is available in full as a PDF. Jaeggi, Buschkuehl, Jonides, and Perrig (2008), Improving Fluid Intelligence with Training on Working Memory: http://lowellinstitute.com/downloads/BrainLearning/Fluid%20Intelligence.pdf http://lowellinstitute.com/downloads/BrainLearning/Fluid%20I...