Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/55260
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Type: Journal article
Title: Picking up speed in understanding: Speech processing efficiency and vocabulary growth across the 2nd year
Author: Fernald, A.
Perfors, A.
Marchman, V.
Citation: Developmental Psychology, 2006; 42(1):98-116
Publisher: Amer Psychological Assoc
Issue Date: 2006
ISSN: 0012-1649
1939-0599
Statement of
Responsibility: 
Anne Fernald, Amy Perfors, and Virginia A. Marchman
Abstract: To explore how online speech processing efficiency relates to vocabulary growth in the 2nd year, the authors longitudinally observed 59 English-learning children at 15, 18, 21, and 25 months as they looked at pictures while listening to speech naming one of the pictures. The time course of eye movements in response to speech revealed significant increases in the efficiency of comprehension over this period. Further, speed and accuracy in spoken word recognition at 25 months were correlated with measures of lexical and grammatical development from 12 to 25 months. Analyses of growth curves showed that children who were faster and more accurate in online comprehension at 25 months were those who showed faster and more accelerated growth in expressive vocabulary across the 2nd year.
Keywords: infant language comprehension
infant speech processing
lexical development
eye-tracking
online measures
DOI: 10.1037/0012-1649.42.1.98
Published version: http://dx.doi.org/10.1037/0012-1649.42.1.98
Appears in Collections:Aurora harvest
Psychology publications

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