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. 2015 Apr 7;10(4):e0122624. doi: 10.1371/journal.pone.0122624

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© 2015 Gutmann et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 2 — A. Cumulative results of all study participants. B. Cumulative results of male and female students, respectively. Non-digital learning media included textbooks and personal notes. Digital learning media included apps, lecture slides, exam questions, internet search, podcasts, e-books and e-learning cases. n = 258, *** p < 0.01; n.s. = non-significant.