AUTHOR=Perlovsky Leonid TITLE=Language and cognition—joint acquisition, dual hierarchy, and emotional prosody JOURNAL=Frontiers in Behavioral Neuroscience VOLUME=7 YEAR=2013 URL=https://www.frontiersin.org/journals/behavioral-neuroscience/articles/10.3389/fnbeh.2013.00123 DOI=10.3389/fnbeh.2013.00123 ISSN=1662-5153