Fig. 5.

Correlations between all neurocomputational parameters and individual performance on regular verbs across development, for different ability groups. The figure also plots MZ twin and DZ twin correlations (split by average twin ability); the correlation between environmental quality and performance; and the total variance explained by all neurocomputational parameters computed via summed independent linear fits. The y-axis shows Pearson correlation size (or% variance for the total variance measure); the x-axis shows epoch of training in the population. (a) High ability individuals; (b) low ability individuals.