Table 1: Descriptive information of experience in non-native language learning.

From: Individual language experience modulates rapid formation of cortical memory circuits for novel words

 Mean (s.d.)Range
Number of learnt non-native languages3.32 (1.04)2–5
Average age of acquisition (AoA)11.84 (1.66)9–14.6
Average time since AoA (years)12.25 (3.36)7.33–17.33
Average self-reported proficiency3.13 (0.68)2–3.67
  1. Individual average across the number of learnt languages was calculated for each individual. Proficiency levels were estimated with a scale 1–5 (1 = basic, 5 = excellent). s.d. = standard deviation.