Canonical babbling ratio – Concurrent and predictive evaluation of the 0.15 criterion

Nyman, Anna; Strömbergsson, Sofia; Lohmander, Anette

doi:10.1016/j.jcomdis.2021.106164

Cited by 6 publications

(3 citation statements)

References 52 publications

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“…Strong gestural predictors of later language are referential gestures, in particular, showing, giving and index-finger pointing (e.g., Brooks & Meltzoff, 2008;Carpenter et al, 1998;Choi et al, 2021;Colonnesi et al, 2010;Donnellan et al, 2020;Özçalışkan et al, 2016). Vocal predictors include the age of onset of infant babbling (McCune & Vihman, 2001; and the rate of canonical babbling expressed as a proportion of all syllables at 10 months (Nyman et al, 2021). This relation is at least in part due to the emerging articulatory requirements of babbling and speech, but may also be due to the role of babbling in eliciting caregiver responses .…”

Section: Social Interaction and The Developmental Origins Of Languagementioning

confidence: 99%

Learning mechanisms influencing infants’ early socio-pragmatic abilities

Salter,

Bannard,

Fricke

et al. 2023

Preprint

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The fact that early language ability varies as a function of socio-economic circumstances (SEC) and predicts later educational inequalities has prompted the development of early interventions to support child language development. To date, the outcomes of such interventions have generally been assessed after children begin talking by measuring vocabulary and grammar. However, infants participate in communicative interactions before they start to speak, with these interactions predicting later language abilities. We therefore assessed whether an early communication-focused intervention can influence interactions prior to the onset of spoken language in the first wave of an ongoing RCT. When their infants were around 6 months, caregivers were randomly assigned to either a language intervention or an active control intervention focused on physical health. When infants turned 12 months, home videos (N = 133, 68 active control intervention, 65 language intervention) were analysed for overall caregiver responsive linguistic interaction, infant pre-linguistic acts, and caregiver responses to these acts. We also examined whether these variables varied by SEC, and whether any intervention effects were moderated by SEC. Pre-registered analyses indicated the intervention led to increases in overall caregiver linguistic responsiveness, infant communicative behaviours, and caregiver semantically contingent responses to infant communicative acts. Findings indicate that early interventions can promote caregiver responsiveness from very early stages of development, particularly for families experiencing social disadvantage. This promotes the development of the infant pre-linguistic communicative abilities thought to form a basis for later language development.

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Section: Social Interaction and The Developmental Origins Of Languagementioning

confidence: 99%

Learning mechanisms influencing infants’ early socio-pragmatic abilities

Salter,

Bannard,

Fricke

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…[10][11][12][13] CBRs are calculated as the total number of canonical syllables divided by the total number of syllables (canonical and noncanonical) produced in an observation segment. 14,15 Previous research has suggested that parents' report of their infants' first canonical syllables often correspond to a CBR based on laboratory recordings of around 0.15; [14][15][16][17] however, other research has debated whether CBRs are comparable across laboratory and home settings. 11,18 A review of the history and utility of CBRs as a measurement tool is provided by Lee et al 10 Importantly, it is now possible to determine CBRs based on random sampling of segments from all-day recordings.…”

Section: A Probe Study On Vocal Development In Two Infants At Risk Fo...mentioning

confidence: 99%

“…It is important to note that earlier research used a 0.20 criterion to measure canonical syllable mastery 15 , and recent research evaluating the validity of this criterion suggests that 0.14 may in fact be more appropriate for laboratory recordings of parent-infant interactions. 17 Even still, perhaps the traditional short-term laboratory or home recordings with all infants guaranteed to be awake and alert make it possible for parents to elicit a larger than usual amount of canonical babbling. At present, there is no empirically determined criterion for the judgment of canonical babbling onset in all-day home recording.…”

Section: Measuring Canonical Babbling Onset In All-day Home Recordingsmentioning

confidence: 99%

A Probe Study on Vocal Development in Two Infants at Risk for Cerebral Palsy

Long

Eichorn

Oller

2022

Developmental Neurorehabilitation

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The present work examined canonical babbling ratios longitudinally as a measure of onset and consolidation of canonical babbling in two infants at risk of cerebral palsy (CP) between 5-16 months. Ten typically developing infants were included for comparison at 6, 9, 12, and 16-19 months. Canonical babbling ratios (CBR) were calculated from five-minute segments and follow-up diagnostic outcomes were collected between 24 and 33 months. The two infants at risk demonstrated low CBR growth trajectories compared to the typical infant group, and slightly different patterns of consolidation. The two infants at risk were later diagnosed with different levels of CP and speech impairment severity. All infants demonstrated greater variability than expected. Studying canonical babbling and other prelinguistic milestones in this population may inform our perspective of the involvement of the motor system in the vocal domain. Additional implications on the analysis of canonical babbling using all-day home recordings are discussed.

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Marginal and Canonical Babbling in 10 Infants at Risk for Cerebral Palsy

Long

Hustad

2023

Am J Speech Lang Pathol

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Purpose: This study is a preliminary quantification and characterization of the development of marginal and canonical syllable patterns in 10 infants at risk for cerebral palsy (CP). Method: We calculated marginal and canonical babbling ratios from parent–infant laboratory recordings of 10 infants at two time points, approximately 13 and 16 months of age. The frequency and diversity of labial, coronal, and velar types of marginal and canonical syllables were also examined. Differences across three outcome groups were compared: infants later diagnosed with CP ( n = 3, CP group), risk of CP due to ongoing gross motor delays ( n = 4, risk group), and current typically developing status with resolved gross motor delays ( n = 3, TDx group). Performance on the Mullen Scales was included for perspective on cognitive development. Results: Higher marginal syllable ratios were observed in the CP and risk groups than the TDx group. An increasing canonical syllable ratio across the two ages was consistently observed in the TDx group. The TDx group produced a greater frequency and diversity of canonical syllable types than the risk and CP groups, and of marginal syllable types than the CP group. Conclusions: This study offers preliminary support for the possibility that speech motor impairment in infants with CP have the potential to be observed and quantified early in vocal development prior to the expected onset of first words. Prolonged rates of marginal syllable forms may be suggestive of speech motor impairment; however, additional longitudinal outcome data over a longer time course and a larger sample of infants are needed to provide further support for this possibility.

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Canonical babbling ratio – Concurrent and predictive evaluation of the 0.15 criterion

Cited by 6 publications

References 52 publications

Learning mechanisms influencing infants’ early socio-pragmatic abilities

Learning mechanisms influencing infants’ early socio-pragmatic abilities

A Probe Study on Vocal Development in Two Infants at Risk for Cerebral Palsy

Marginal and Canonical Babbling in 10 Infants at Risk for Cerebral Palsy

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