Franck et al. (2013) [27] | 49 | 43 | 33.5 | 12 | 2 | executive function (effect size not available), attention (effect size not available), verbal memory (effect size not available), visuospatial abilities (effect size not available), working memory (effect size not available) | executive function, attention, verbal memory, visuospatial abilities, working memory |
Garrido et al. (2013) [28] | 31 | 18 | 33.3 | 24 | 2 | speed of processing (0.30), working memory (0.44), reasoning and problem solving (0.30 - 0.52) | attention/vigilance, working memory, reasoning and problem solving, verbal learning, speed of processing |
Hubacher et al. (2013) [29] | 15 | 14 | 41.9 | 4 | 4 | verbal working memory (effect size not available) | verbal and visual short term memory, verbal and working memory |
Tan et al. (2013) [30] | 36 | 34 | 34.7 | 12 | 3 | executive function (effect size not available), verbal memory (effect size not available), attention (effect size not available), working memory(effect size not available), psychomotor speed(effect size not available) | executive function, verbal memory, attention, working memory, psychomotor speed |
Trapp et al. (2013) [31] | 30 | 30 | 36.65 | 12 | 1 | problem solving (0.63 - 1.29), memory (0.85 - 1.13) and attention (0.35 - 0.36) | problem solving, memory and attention, speed of processing |