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. 2017 Apr 21;8:552. doi: 10.3389/fpsyg.2017.00552

Table 4.

Mean working memory and attention scores with standard deviations in the different groups.

Backward Digit Span Backward Dot Matrix Sky Search Flanker effect (in ms)
Monolingual 15.09 (2.66) 17.27 (4.83) 6.07 (2.77) 91.84 (194.77)
Bilingual 14.61 (2.90) 17.39 (5.21) 5.30 (2.20) 136.38 (207.52)
Frisian 14.80 (3.14) 17.89 (4.72) 4.85 (1.46) 142.81 (185.57)
Limburgish 15.25 (2.91) 17.20 (6.33) 5.17 (2.29) 86.03 (223.28)
Polish 13.80 (2.49) 17.07 (4.47) 5.88 (2.60) 180.30 (205.67)