Factor analysis of 93 traits after varimax rotation (N = 13,138).

See Methods S3 for definitions of the abbreviations associated with the individual measures. Loadings ≥0.3 are shown in bold. This criterion is used to aid interpretation rather than imply any significant deviation from zero. The total variance explained by the 7 factors was 84.7%. The first 7 domains match the retained factors: 1 Verbal ability, 2 Language acquisition, 3 Social understanding, 4 Semantic-pragmatic skills, 5 Repetitive Behaviour, 6 Articulation and 7 Social inhibition.