Training progress during the n-back (A) and serial position (B) training. The participants of the simultaneous training group (STG) and single cognitive training group (SCTG) significantly improved their performance during both trainings (p < .001), but with no differences in training progress between the two training groups. Bars represent ± standard error of the mean.
Theill et al. BMC Neuroscience 2013 14:103 doi:10.1186/1471-2202-14-103