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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Dev Sci. 2016 May 19;20(1):10.1111/desc.12425. doi: 10.1111/desc.12425

Table 1. Descriptives of language exposure measures (n = 18).

Measure of Exposure M (SD) range
Reported
 Proportion Spanisha .83 (.14) .51-.98

Observed
 Spanish CDS/hrb 602.6 (244.9) 127.5 – 946.5
 English CDS/hrb 33.6 (44.9) 0.1 – 185.5
 Proportion CDS/hrc .95 (.05) .78– 1.0
a

Proportion of person hours reported for Spanish out of all Spanish and English person hours based on a comprehensive Language Background Interview.

b

Mean (SD) number of child-directed words (CDS/hr) identified as Spanish or English, normalized for length of recording.

c

Mean proportion of child-directed words (CDS) that were identified as Spanish out of all Spanish and English child-directed words produced during the recording, normalized for length of recording.