Figure 1 : Average age of acquisition and proficiency of each reported non-native language.

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

Figure 1

The size of the circle and number in the brackets denote the percentage of subjects who reported learning the language. Self-reported proficiency is shown on scale 1–5 (1 = basic, 5 = excellent). The age of acquisition correlated negatively with proficiency.