The authors would like to apologize for a typographical error on page 1005. In Table 1, the data for socioeconomic status (SES), line 3, is incorrect. The corrected Table should read:
Table 1. Demographic data for Autism Spectrum Disorder (ASD) and Typically Developing control (TD) groups
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20230216115342610-0426:S0305000923000119:S0305000923000119_tab1.png?pub-status=live)
Note: Scores represent means, standard deviation and range.
a SES=socioeconomic status, assessed with the Hollingshead Four-Factor index.
b IQ assessed with Wechsler Scales (WISC-III or WAIS-III).
c PPVT-3 (Peabody Picture Vocabulary Test, 3rd edn), Scaled Score.
d PPVT-3 Raw score.