Table 3. 
Characteristics of ADS and CDS studied in past and present work.
CorpusAddressee(s)TokensTypesUtterances
Bernstein Ratner Experimenter 19,753 1,797 2,668 
Children 9–27 months 30,996 1,501 8,252 
Riken Experimenter 22,844 2,022 3,582 
Children 18–24 months 51,315 2,850 14,570 
Winnipeg Adults 8,224 1,342 1,772 
Children 13–38 months 20,786 2,015 5,320 
CorpusAddressee(s)TokensTypesUtterances
Bernstein Ratner Experimenter 19,753 1,797 2,668 
Children 9–27 months 30,996 1,501 8,252 
Riken Experimenter 22,844 2,022 3,582 
Children 18–24 months 51,315 2,850 14,570 
Winnipeg Adults 8,224 1,342 1,772 
Children 13–38 months 20,786 2,015 5,320 

Note. ADS = adult-directed speech; CDS = child-directed speech; MTTR for the Bernstein Ratner ADS was .93; CDS .88.

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