Fig 3. FDr but not FDf training transferred to WM.

(a) FDf performance during training (N = 36) for individuals (grey lines) and group average (filled squares). (b) FDr performance during training (N = 24). (c) Improvement of FD trained and control groups on the Tone 3-back task, calculated as the improvement ratio of d’ [(posttest–pretest)/pretest]. (d) Correlation between WM improvement and FDr–FDf improvement (see text). Error bars here and in Figs 4–6 are ± 1 s.e.m.