Funding for this research was provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (U54 HD087011, R01 HD068479)
Text and Data Mining valid from 2018-03-16
First Online: 16 March 2018
Compliance with Ethical Standards
: JNC receives royalties from Western Psychological Services for the commercial distribution of the Social Responsiveness Scale, a quantitative measure of autistic traits for ages 30 months through adulthood. The remaining authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments. Specifically, the WUSM Human Research Protection Office (HRPO; 201208010) and the State of Missouri Department of Health and Senior Services Institutional Review Board (State IRB Approval #1296) approved all study procedures.
: Informed consent was obtained from parents of twins who participated in the study.