ESM from Early development of abstract language knowledge: evidence from perception–production transfer of birth-language memory

Table S1: Statistics for comparison between Korean adoptees and Dutch controls in terms of six control variables.; Table S2: Statistics for comparison between early-adopted and later-adopted subgroups in terms of six control variables.; Table S3: Correlation matrix between perceptual test results and production assessment results for (a) Korean adoptees and (b) Dutch controls.; Text S1: Materials and procedure for the childhood-vocabulary recognition test.; Text S2: Analysis of identification errors.; Text S3: Control analyses.; Text S4: Correlations between perceptual test results and production assessment results from hierarchical regression analyses.; Figure S1: (a) Mean proportions of correct identification for Korean adoptees (left panel) and Dutch controls (right panel) as a function of production time, and (b) mean ratings for Korean adoptees (left panel) and Dutch controls (right panel) as a function of production time.