Thierry Nazzi
Datos Biográficos
| ID | 861319 |
|---|---|
| NOMBRE | Thierry Nazzi |
| NOMBRES | Thierry |
| APELLIDO | Nazzi |
| FIRMA | NAZZI T |
| AFILIACIONES | Délégation Paris 5 |
| ORCID | 0000-0002-4378-3661 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 41 |
| TOTAL DE CITAS | 19 |
| TOTAL COMO AUTOR | 41 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1995 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 3 |
Executive functions as mediators between family socio-economic status and pre-academic abilities in early preschool children
Academic achievement in children is strongly shaped by their family’s socio-economic status (SES). Executive functions (EFs)—a set of high-level cognitive functions that enable individuals to set and achieve goals—may mediate this association. In a representative sample of 2,618 preschoolers (mean age = 42.61 ± 3.41 months; 1,254 girls), we found that EFs partly mediate the SES–pre-academic skills link. SES-related inequalities in numeracy and or…
Consonant, vowel, and tone cues in early wordform recognition
Phonological biases in word recognition vary across languages, however, most work has examined consonant and vowel information, with little attention to how lexical tones contribute to word recognition in tone-language learners. The present study asked how consonants, vowels, and tones are weighted using a familiar-wordform recognition task in 11-month-old Cantonese-learning infants. In a baseline experiment (Experiment 1), infants listened longe…
Use of Statistical and Acoustic Cues for Speech Segmentation in French-Learning 7-Month-Old Infants and French-Speaking Adults
Young infants can segment continuous speech with acoustic as well as statistical cues. Understanding how these cues interact can be informative about how infants solve the segmentation problem. This study investigates the use of acoustic and statistical cues by both adult French speakers and 6-to-7-month-old French-learning infants. Both groups were familiarized with a naturally recorded string, alternating either in duration (long-short) or in i…
A multidimensional perspective on the acquisition of subject-verb dependencies by Haitian-Creole speaking children
The present multidimensional study investigates the acquisition of pronominal subject-verb dependencies in Standard Haitian Creole (HC). A corpus analysis confirms that HC subject pronouns are phonological clitics in the target grammar and that their reduction is optional and unpredictable. The comprehension and production of dependencies involving these subject pronouns in 20 preschoolers acquiring HC as their first language were investigated. W…
The Language ENvironment Analysis system (Lena)
This study is a validation of the LENA system for the Italian language. In Study 1, to test LENA’s accuracy, seventy-two 10-minute samples extracted from daylong LENA recordings were manually transcribed for 12 children longitudinally observed at 1;0 and 2;0. We found strong correlations between LENA and human estimates in the number of Adult Word Count (AWC) and Child Vocalisations Count (CVC) and a weak correlation between LENA and human estima…
Vowels and consonants matter equally to British English-learning 11-month-olds’ familiar word form recognition
While adult studies show that consonants are more important than vowels in lexical processing tasks, the developmental trajectory of this consonant bias varies cross-linguistically. This study tested whether British English-learning 11-month-old infants’ recognition of familiar word forms is more reliant on consonants than vowels, as found by Poltrock and Nazzi (2015) in French. After establishing that infants prefer listening to a list of famili…
The Impact of Phonological Biases on Mispronunciation Sensitivity and Novel Accent Adaptation
Successful word recognition requires that listeners attend to differences that are phonemic in the language while also remaining flexible to the variation introduced by different voices and accents. Previous work has demonstrated that American-English-learning 19-month-olds are able to balance these demands: although one-off one-feature mispronunciations typically disrupt English-learning toddlers’ lexical access, they no longer do after toddlers…
Converging Evidence of Underlying Competence
A surprising comprehension-production asymmetry in subject-verb (SV) agreement acquisition has been suggested in the literature, and recent research indicates that task-specific as well as language-specific features may contribute to this apparent asymmetry across languages. The present study investigates when during development children acquiring Mexican Spanish gain competence with 3 rd -person SV agreement, testing production as well as compre…
Perception of accent in bilingual French/American-English children by native adult speakers
Variation in phonological bias
Rhythmic grouping biases in simultaneous bilinguals
This study provides a novel approach for testing the universality of perceptual biases by looking at speech processing in simultaneous bilingual adults learning two languages that support the maintenance of this bias to different degrees. Specifically, we investigated the Iambic/Trochaic Law, an assumed universal grouping bias, in simultaneous French–German bilinguals, presenting them with streams of syllables varying in intensity, duration or ne…
Language-specific prosodic acquisition
Infant learning of words in a typologically distant nonnative language
Infants attune to their native language during the first two years of life, as attested by decreases in the processing of nonnative phonological sounds and reductions in the range of possible sounds accepted as labels for native words. The present study shows that French-learning infants aged 1;8 can learn new words in an unfamiliar language, Cantonese, after just 6 repetitions of each word. This shows that word learning in a nonnative language r…
Quantifying Sources of Variability in Infancy Research Using the Infant-Directed-Speech Preference
Psychological scientists have become increasingly concerned with issues related to methodology and replicability, and infancy researchers in particular face specific challenges related to replicability: For example, high-powered studies are difficult to conduct, testing conditions vary across labs, and different labs have access to different infant populations. Addressing these concerns, we report on a large-scale, multisite study aimed at (a) as…
Emergence of a consonant bias during the first year of life
Recent evidence suggests that during the first year of life, a preference for consonant information during lexical processing (consonant bias) emerges, at least for some languages like French. Our study investigated the factors involved in this emergence as well as the developmental consequences for variation in consonant bias emergence. In a series of experiments, we measured 5‐, 8‐, and 11‐month‐old French‐learning infants orientation times to …
Visual scanning of a talking face in preterm and full-term infants
Preterm birth (< 37 gestational weeks) is associated with long-term risks for health and neurodevelopment, but recently, studies have also started exploring how preterm birth affects early language development in the 1st year of life. Because the timing and quality of auditory and visual input is very different for preterm versus full-term infants, audiovisual speech perception in early development may be particularly sensitive to preterm birth. …
Early Segmentation Abilities in Preterm Infants
Infants born preterm have higher risks of developing linguistic deficits. Considering that the ability to segment words from fluent speech is crucial for lexical acquisition, Experiment 1 tested the ability of healthy extremely‐to‐late preterm infants to segment monosyllabic words at 6 months of postnatal age. Results establish basic segmentation skills in these infants. While we failed to find an effect of the degree of prematurity, this issue w…
How Consonants and Vowels Shape Spoken-Language Recognition
All languages instantiate a consonant/vowel contrast. This contrast has processing consequences at different levels of spoken-language recognition throughout the lifespan. In adulthood, lexical processing is more strongly associated with consonant than with vowel processing; this has been demonstrated across 13 languages from seven language families and in a variety of auditory lexical-level tasks (deciding whether a spoken input is a word, spott…
Infants' First Words are not Phonetically Specified
By the end of their first year of life, infants’ representations of familiar words contain phonetic detail; yet little is known about the nature of these representations at the very beginning of word learning. Bouchon et al. ( ) showed that French‐learning 5‐month‐olds could detect a vowel change in their own name and not a consonant change, but also that infants reacted to the acoustic distance between vowels. Here, we tested British English‐lea…
A Collaborative Approach to Infant Research
The ideal of scientific progress is that we accumulate measurements and integrate these into theory, but recent discussion of replicability issues has cast doubt on whether psychological research conforms to this model. Developmental research—especially with infant participants—also has discipline‐specific replicability challenges, including small samples and limited measurement methods. Inspired by collaborative replication efforts in cognitive …
Competing models of liaison acquisition
Given that nouns rarely appear in isolation in French, infants acquiring the language must often retrieve the underlying representation of vowel-initial lexical forms from liaison contexts that provide conflicting information about the initial phoneme. Given this ambiguity, how do learners represent these nouns in their lexicons, and how do these representations change as learners’ knowledge of liaison and the lexicon become more adult-like? To e…
Delayed acquisition of non-adjacent vocalic distributional regularities
The ability to compute non-adjacent regularities is key in the acquisition of a new language. In the domain of phonology/phonotactics, sensitivity to non-adjacent regularities between consonants has been found to appear between 7 and 10 months. The present study focuses on the emergence of a posterior–anterior (PA) bias, a regularity involving two non-adjacent vowels. Experiments 1 and 2 show that a preference for PA over AP (anterior–posterior) …
Uncovering productive morphosyntax in French-learning toddlers
The present study applies a multidimensional methodological approach to the study of the acquisition of morphosyntax. It focuses on evaluating the degree of productivity of an infrequent subject–verb agreement pattern in the early acquisition of French and considers the explanatory role played by factors such as input frequency, semantic transparency of the agreement markers, and perceptual factors in accounting for comprehension of agreement in …
Processing Continuous Speech in Infancy
The present chapter focuses on fluent speech segmentation abilities in early language development. We first review studies exploring the early use of major prosodic boundary cues which allow infants to cut full utterances into smaller-sized sequences like clauses or phrases. We then summarize studies showing that word segmentation abilities emerge around 8 months, and rely on infants’ processing of various bottom-up word boundary cues and top-dow…
Coping With Linguistic Diversity
Because multilingual environments are the norm rather than the excep tion, infants must have the capacity very early in life to distinguish one language from another. Without such a capacity, infants might acquire linguistic systems that amalgamate properties of different languages. The ensuing confusion would be overpowering. Fortunately, this never arises, despite the intuitive fears of monolingual parents. Infants raised in multilingual socie…
English-learning Infants' Segmentation of Verbs from Fluent Speech
Two experiments sought to extend the demonstration of English-learning infants' abilities to segment nouns from fluent speech to a new lexical class: verbs. Moreover, we explored whether two factors previously shown to influence noun segmentation, stress pattern (strong-weak or weak-strong) and type of initial phoneme (consonant or vowel), also influence verb segmentation. Our results establish the early emergence of verb segmentation in English:…
Phonetic Specificity in Early Lexical Acquisition
Use of precise consonantal information while learning new words has been established for onset consonants in previous studies, which showed that infants as young as 16 to 20 months of age can simultaneously learn two new words that differ only by a syllable-initial consonant (Havy & Nazzi, 2009; Nazzi, 2005; Nazzi & New, 2007; Werker, Fennell, Corcoran, & Stager, 2002). However, there is no systematic evidence to show whether specific phonetic in…
How Consonants and Vowels Shape Spoken-Language Recognition
All languages instantiate a consonant/vowel contrast. This contrast has processing consequences at different levels of spoken-language recognition throughout the lifespan. In adulthood, lexical processing is more strongly associated with consonant than with vowel processing; this has been demonstrated across 13 languages from seven language families and in a variety of auditory lexical-level tasks (deciding whether a spoken input is a word, spott…
A Consonant/Vowel Asymmetry in Word-form Processing
In the literature, consonants have been proposed to be more important than vowels in lexical activation and access processes. However, despite a large body of evidence in the infant and adult literature, a recent study revealed a disappearance of the bias in newly learned words over the preschool years (Havy, Bertoncini, & Nazzi, 2011). As a first explanation of this developmental change, one might consider that the bias initially applies to all …
Is children's comprehension of subject-verb agreement universally late? Comparative evidence from French, English, and Spanish
Competing models of liaison acquisition
Given that nouns rarely appear in isolation in French, infants acquiring the language must often retrieve the underlying representation of vowel-initial lexical forms from liaison contexts that provide conflicting information about the initial phoneme. Given this ambiguity, how do learners represent these nouns in their lexicons, and how do these representations change as learners’ knowledge of liaison and the lexicon become more adult-like? To e…
Developing knowledge of nonadjacent dependencies
Characterizing the nature of linguistic representations and how they emerge during early development is a central goal in the cognitive science of language. One area in which this development plays out is in the acquisition of dependencies-relationships between co-occurring elements in a word, phrase, or sentence. These dependencies often involve multiple levels of representation and abstraction, built up as infants gain experience with their nat…
Early Speech Segmentation in French-learning Infants
Lexical acquisition relies on many mechanisms, one of which corresponds to segmentation abilities, that is, the ability to extract word forms from fluent speech. This ability is important since words are rarely produced in isolation even when talking to infants. The present study explored whether young French-learning infants segment from fluent speech the rhythmic unit of their native language, the syllable. Using the Headturn Preference Procedu…
Morae and Syllables
Are neonates sensitive to the different rhythmical units that are used in different spoken languages? And do they use these units to represent and discriminate multisyllabic words? In the present study, we used the High-Amplitude Sucking procedure to test whether 3-day-old French infants discriminate lists of Japanese words. The lists of words differed either in the number of syllabic units or in the number of sub-syllabic units such as morae. In…
Language discrimination by newborns
Language Discrimination by English-Learning 5-Month-Olds
Six‐Month‐Olds' Detection of Clauses Embedded in Continuous Speech
Three experiments investigated the role of prosodic structure for infants' recognition of embedded word sequences. Six‐month‐olds were familiarized with 2 versions of the same sequence, 1 corresponding to a well‐formed prosodic unit and the other to a prosodically ill‐formed sequence (although a successive word series). Next, infants heard 2 test passages. One included the well‐formed unit, and the other included the ill‐formed sequence. In Exper…
Early Word Segmentation by Infants and Toddlers With Williams Syndrome
This study tested the ability of English infants and toddlers with Williams syndrome to segment, that is, to extract from fluent speech, bisyllabic nouns that had either a strong–‐weak stress pattern (predominant in English), or a weak–‐strong stress pattern. The testing procedure was the same for both types of words: Children were familiarized with instances of isolated nouns, and then tested on their recognition of these nouns embedded in passa…
Asynchrony in the cognitive and lexical development of young children with Williams syndrome
The present study investigates whether five-to-six-year-old children with Williams syndrome (N=8) can form new object categories based on naming information alone, and compares them with five groups of typically developing children aged 2;0 to 6;0 (N=34 children). Children were presented with triads of dissimilar objects; all objects in a triad were labelled, two of them with the same pseudoname. Name-based categorization was evaluated through ob…
English-learning Infants' Segmentation of Verbs from Fluent Speech
Two experiments sought to extend the demonstration of English-learning infants' abilities to segment nouns from fluent speech to a new lexical class: verbs. Moreover, we explored whether two factors previously shown to influence noun segmentation, stress pattern (strong-weak or weak-strong) and type of initial phoneme (consonant or vowel), also influence verb segmentation. Our results establish the early emergence of verb segmentation in English:…
Better Processing of Consonantal Over Vocalic Information in Word Learning at 16 Months of Age
Previous research using the name‐based categorization task has shown that 20‐month‐old infants can simultaneously learn 2 words that only differ by 1 consonantal feature but fail to do so when the words only differ by 1 vocalic feature. This asymmetry was taken as evidence for the proposal that consonants are more important than vowels at the lexical level. This study explores this consonant‐vowel asymmetry in 16‐month‐old infants, using an inter…
Phonetic Specificity in Early Lexical Acquisition
Use of precise consonantal information while learning new words has been established for onset consonants in previous studies, which showed that infants as young as 16 to 20 months of age can simultaneously learn two new words that differ only by a syllable-initial consonant (Havy & Nazzi, 2009; Nazzi, 2005; Nazzi & New, 2007; Werker, Fennell, Corcoran, & Stager, 2002). However, there is no systematic evidence to show whether specific phonetic in…
Acquisition of Nonadjacent Phonological Dependencies in the Native Language During the First Year of Life
Languages instantiate many different kinds of dependencies, some holding between adjacent elements and others holding between nonadjacent elements. In the domain of phonology–phonotactics, sensitivity to adjacent dependencies has been found to appear between 6 and 10 months. However, no study has directly established the emergence of sensitivity to nonadjacent phonological dependencies in the native language. The present study focuses on the emer…
English-learning one- to two-year-olds do not show a consonant bias in word learning
Following the proposal that consonants are more involved than vowels in coding the lexicon (Nespor, Peña & Mehler, 2003), an early lexical consonant bias was found from age 1;2 in French but an equal sensitivity to consonants and vowels from 1;0 to 2;0 in English. As different tasks were used in French and English, we sought to clarify this ambiguity by using an interactive word-learning study similar to that used in French, with British-English-…
Early word segmentation in infants acquiring Parisian French
Six experiments explored Parisian French-learning infants' ability to segment bisyllabic words from fluent speech. The first goal was to assess whether bisyllabic word segmentation emerges later in infants acquiring European French compared to other languages. The second goal was to determine whether infants learning different dialects of the same language have partly different segmentation abilities, and whether segmenting a non-native dialect h…
A Consonant/Vowel Asymmetry in Word-form Processing
In the literature, consonants have been proposed to be more important than vowels in lexical activation and access processes. However, despite a large body of evidence in the infant and adult literature, a recent study revealed a disappearance of the bias in newly learned words over the preschool years (Havy, Bertoncini, & Nazzi, 2011). As a first explanation of this developmental change, one might consider that the bias initially applies to all …
Is children's comprehension of subject-verb agreement universally late? Comparative evidence from French, English, and Spanish
Early Speech Segmentation in French-learning Infants
Lexical acquisition relies on many mechanisms, one of which corresponds to segmentation abilities, that is, the ability to extract word forms from fluent speech. This ability is important since words are rarely produced in isolation even when talking to infants. The present study explored whether young French-learning infants segment from fluent speech the rhythmic unit of their native language, the syllable. Using the Headturn Preference Procedu…
Delayed acquisition of non-adjacent vocalic distributional regularities
The ability to compute non-adjacent regularities is key in the acquisition of a new language. In the domain of phonology/phonotactics, sensitivity to non-adjacent regularities between consonants has been found to appear between 7 and 10 months. The present study focuses on the emergence of a posterior–anterior (PA) bias, a regularity involving two non-adjacent vowels. Experiments 1 and 2 show that a preference for PA over AP (anterior–posterior) …
Uncovering productive morphosyntax in French-learning toddlers
The present study applies a multidimensional methodological approach to the study of the acquisition of morphosyntax. It focuses on evaluating the degree of productivity of an infrequent subject–verb agreement pattern in the early acquisition of French and considers the explanatory role played by factors such as input frequency, semantic transparency of the agreement markers, and perceptual factors in accounting for comprehension of agreement in …
Processing Continuous Speech in Infancy
The present chapter focuses on fluent speech segmentation abilities in early language development. We first review studies exploring the early use of major prosodic boundary cues which allow infants to cut full utterances into smaller-sized sequences like clauses or phrases. We then summarize studies showing that word segmentation abilities emerge around 8 months, and rely on infants’ processing of various bottom-up word boundary cues and top-dow…
Developing knowledge of nonadjacent dependencies
Characterizing the nature of linguistic representations and how they emerge during early development is a central goal in the cognitive science of language. One area in which this development plays out is in the acquisition of dependencies-relationships between co-occurring elements in a word, phrase, or sentence. These dependencies often involve multiple levels of representation and abstraction, built up as infants gain experience with their nat…
Infants' First Words are not Phonetically Specified
By the end of their first year of life, infants’ representations of familiar words contain phonetic detail; yet little is known about the nature of these representations at the very beginning of word learning. Bouchon et al. ( ) showed that French‐learning 5‐month‐olds could detect a vowel change in their own name and not a consonant change, but also that infants reacted to the acoustic distance between vowels. Here, we tested British English‐lea…
A Collaborative Approach to Infant Research
The ideal of scientific progress is that we accumulate measurements and integrate these into theory, but recent discussion of replicability issues has cast doubt on whether psychological research conforms to this model. Developmental research—especially with infant participants—also has discipline‐specific replicability challenges, including small samples and limited measurement methods. Inspired by collaborative replication efforts in cognitive …
Competing models of liaison acquisition
Given that nouns rarely appear in isolation in French, infants acquiring the language must often retrieve the underlying representation of vowel-initial lexical forms from liaison contexts that provide conflicting information about the initial phoneme. Given this ambiguity, how do learners represent these nouns in their lexicons, and how do these representations change as learners’ knowledge of liaison and the lexicon become more adult-like? To e…
Early Segmentation Abilities in Preterm Infants
Infants born preterm have higher risks of developing linguistic deficits. Considering that the ability to segment words from fluent speech is crucial for lexical acquisition, Experiment 1 tested the ability of healthy extremely‐to‐late preterm infants to segment monosyllabic words at 6 months of postnatal age. Results establish basic segmentation skills in these infants. While we failed to find an effect of the degree of prematurity, this issue w…
How Consonants and Vowels Shape Spoken-Language Recognition
All languages instantiate a consonant/vowel contrast. This contrast has processing consequences at different levels of spoken-language recognition throughout the lifespan. In adulthood, lexical processing is more strongly associated with consonant than with vowel processing; this has been demonstrated across 13 languages from seven language families and in a variety of auditory lexical-level tasks (deciding whether a spoken input is a word, spott…
Visual scanning of a talking face in preterm and full-term infants
Preterm birth (< 37 gestational weeks) is associated with long-term risks for health and neurodevelopment, but recently, studies have also started exploring how preterm birth affects early language development in the 1st year of life. Because the timing and quality of auditory and visual input is very different for preterm versus full-term infants, audiovisual speech perception in early development may be particularly sensitive to preterm birth. …
Language Development and Disorders (40 obras) · Psychology (39 obras) · Linguistics (34 obras) · Phonetics and Phonology Research (23 obras) · Reading and Literacy Development (22 obras) · Computer Science (18 obras) · Cognitive psychology (16 obras) · Language acquisition (14 obras) · Artificial Intelligence (11 obras) · Consonant (11 obras)