Article History
First Online: 19 November 2019
Compliance with Ethical Standards
: The authors declare that this is an original article and has not been submitted to another journal while being considered for publication in <i>The Analysis of Verbal Behavior</i>.
: The authors declare that they have no conflict of interest.
: The procedures in this study were in line with the ethical standards of Kennedy Krieger Institute, the Johns Hopkins University School of Medicine, and with the 1964 Helsinki declaration and its subsequent amendments.