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Infants' Preference for Child-Directed Speech over Time-Reversed Speech in On-Channel and Off-Channel Masking

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Title: Infants' Preference for Child-Directed Speech over Time-Reversed Speech in On-Channel and Off-Channel Masking
Language: English
Authors: Segal, Osnat (ORCID 0000-0002-6277-0997), Kligler, Nitzan, Kishon-Rabin, Liat
Source: Journal of Speech, Language, and Hearing Research. Jul 2021 64(7):2897-2908.
Availability: American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Peer Reviewed: Y
Page Count: 12
Publication Date: 2021
Document Type: Journal Articles
Reports - Research
Descriptors: Infants, Preferences, Child Language, Parent Child Relationship, Acoustics, Cognitive Ability, Attention, Cognitive Development
DOI: 10.1044/2021_JSLHR-20-00279
ISSN: 1092-4388
Abstract: Purpose: This study aims to examine the development of auditory selective attention to speech in noise by examining the ability of infants to prefer child-directed speech (CDS) over time-reversed speech (TRS) presented in "on-channel" and "off-channel" noise. Method: A total of 32 infants participated in the study. Sixteen typically developing infants were tested at 7 and 11 months of age using the central fixation procedure with CDS and TRS in two types of noise at +10 dB signal-to-noise ratio. One type of noise was an "on-channel" masker with a spectrum overlapping that of the CDS (energetic masking), and the second was an "off-channel" masker with frequencies that were outside the spectrum of the CDS (distractive masking). An additional group of sixteen 11-month-old infants were tested in quiet and served as controls for the "off-frequency" masker condition. Results: Infants preferred CDS over TRS in both age groups, but this preference was more pronounced with "off-channel" masker regardless of age. Also, older infants demonstrated longer looking time for the target stimuli when presented with an "off-channel" masker compared to the "on-channel" masker. Looking time in quiet was similar to looking time in the "off-channel" condition, and looking time for CDS was longer in quiet compared to the "on-channel" condition. Conclusions: These findings support the notion that (a) infants as young as 7 months of age are already showing preference for speech in noise, regardless of type of masker; (b) by 11 months of age, listening with the "off-channel" condition did not yield different results than in quiet. Thus, by 11 months of age, infants' cognitive--attentional abilities may be more developed.
Abstractor: As Provided
Entry Date: 2021
Accession Number: EJ1307247
Database: ERIC
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  Data: Infants' Preference for Child-Directed Speech over Time-Reversed Speech in On-Channel and Off-Channel Masking
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  Data: <searchLink fieldCode="AR" term="%22Segal%2C+Osnat%22">Segal, Osnat</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0002-6277-0997">0000-0002-6277-0997</externalLink>)<br /><searchLink fieldCode="AR" term="%22Kligler%2C+Nitzan%22">Kligler, Nitzan</searchLink><br /><searchLink fieldCode="AR" term="%22Kishon-Rabin%2C+Liat%22">Kishon-Rabin, Liat</searchLink>
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  Data: <searchLink fieldCode="SO" term="%22Journal+of+Speech%2C+Language%2C+and+Hearing+Research%22"><i>Journal of Speech, Language, and Hearing Research</i></searchLink>. Jul 2021 64(7):2897-2908.
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  Data: American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
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  Data: 12
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  Data: 2021
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  Data: <searchLink fieldCode="DE" term="%22Infants%22">Infants</searchLink><br /><searchLink fieldCode="DE" term="%22Preferences%22">Preferences</searchLink><br /><searchLink fieldCode="DE" term="%22Child+Language%22">Child Language</searchLink><br /><searchLink fieldCode="DE" term="%22Parent+Child+Relationship%22">Parent Child Relationship</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustics%22">Acoustics</searchLink><br /><searchLink fieldCode="DE" term="%22Cognitive+Ability%22">Cognitive Ability</searchLink><br /><searchLink fieldCode="DE" term="%22Attention%22">Attention</searchLink><br /><searchLink fieldCode="DE" term="%22Cognitive+Development%22">Cognitive Development</searchLink>
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  Data: 10.1044/2021_JSLHR-20-00279
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  Data: 1092-4388
– Name: Abstract
  Label: Abstract
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  Data: Purpose: This study aims to examine the development of auditory selective attention to speech in noise by examining the ability of infants to prefer child-directed speech (CDS) over time-reversed speech (TRS) presented in "on-channel" and "off-channel" noise. Method: A total of 32 infants participated in the study. Sixteen typically developing infants were tested at 7 and 11 months of age using the central fixation procedure with CDS and TRS in two types of noise at +10 dB signal-to-noise ratio. One type of noise was an "on-channel" masker with a spectrum overlapping that of the CDS (energetic masking), and the second was an "off-channel" masker with frequencies that were outside the spectrum of the CDS (distractive masking). An additional group of sixteen 11-month-old infants were tested in quiet and served as controls for the "off-frequency" masker condition. Results: Infants preferred CDS over TRS in both age groups, but this preference was more pronounced with "off-channel" masker regardless of age. Also, older infants demonstrated longer looking time for the target stimuli when presented with an "off-channel" masker compared to the "on-channel" masker. Looking time in quiet was similar to looking time in the "off-channel" condition, and looking time for CDS was longer in quiet compared to the "on-channel" condition. Conclusions: These findings support the notion that (a) infants as young as 7 months of age are already showing preference for speech in noise, regardless of type of masker; (b) by 11 months of age, listening with the "off-channel" condition did not yield different results than in quiet. Thus, by 11 months of age, infants' cognitive--attentional abilities may be more developed.
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        Type: general
      – SubjectFull: Preferences
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      – SubjectFull: Child Language
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      – SubjectFull: Parent Child Relationship
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      – TitleFull: Infants' Preference for Child-Directed Speech over Time-Reversed Speech in On-Channel and Off-Channel Masking
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