A5057068248- Language Development and Disorders
- Phonetics and Phonology Research
- Child and Animal Learning Development
- Speech Recognition and Synthesis
- Speech and dialogue systems
- Reading and Literacy Development
- Linguistic Variation and Morphology
- Early Childhood Education and Development
- Natural Language Processing Techniques
- Language, Discourse, Communication Strategies
- Gaze Tracking and Assistive Technology
- Hearing Impairment and Communication
- Neuroscience and Music Perception
- Topic Modeling
- Multilingual Education and Policy
- Education, Safety, and Science Studies
- Parental Involvement in Education
- Language, Metaphor, and Cognition
- Robotics and Automated Systems
- Marine and Coastal Research
- Ovarian cancer diagnosis and treatment
- Menopause: Health Impacts and Treatments
- Mobile Health and mHealth Applications
- Infant Health and Development
- Semantic Web and Ontologies
Chosun University
2018-2025
Google (United States)
2021
University of Pennsylvania
2001-2020
University of Pennsylvania Health System
2014-2020
Seoul National University
2015
University of North Carolina at Chapel Hill
2014
University at Buffalo, State University of New York
2009-2013
Much of our basic understanding cognitive and social processes in infancy relies on measures looking time, specifically infants’ visual preference for a novel or familiar stimulus. However, despite being the foundation many behavioral tasks infant research, determinants preferences are poorly understood, differences expression can be difficult to interpret. In this large-scale study, we test predictions from Hunter Ames model infants' preferences. We investigate effects three factors...
Abstract Caregiver speech is not a static collection of utterances, but occurs in conversational exchanges , which caregiver and child dynamically influence each other's speech. We investigate (a) whether children caregivers modulate the prosody their as function interlocutor's speech, (b) initiator conversation on durational characteristics exchange. analyzed naturalistic conversations from 13 mother–infant/toddler dyads aged 12–30 months across full-day recordings 3–5 days per dyad using...
Measuring eye movements remotely via the participant's webcam promises to be an attractive methodological addition in-person eye-tracking in lab. However, there is a lack of systematic research comparing remote web-based with in-lab young children. We report multi-lab study that compared these two measures anticipatory looking task toddlers using WebGazer.js and jsPsych. Results our tested sample 18-27-month-old (N = 125) revealed successfully captured goal-based action predictions, although...
To acquire language, children need rich language input. However, many parents find it difficult to provide with sufficient input, which risks delaying their development. aid these parents, we design Captivate!, the first system that provides contextual guidance during play. Our tracks both visual and spoken cues infer targets of joint attention, enabling real-time suggestion situation-relevant phrases for parent. We our through a user-centered process immigrant families--a highly vulnerable...
Abstract We investigated the dynamics of communicative initiation in infant−caregiver interactions across ages and language abilities. Analyses 228 Language ENvironment Analysis (LENA) recordings from 141 Korean adult−child dyads (60 girls; aged 7−30 months) replicated initiator effect reported North American populations. This effect, demonstrated by longer utterances, more frequent speech, shorter response times self-initiated for both children adults, suggests potential cross-cultural...
Purpose One promising early marker for autism and other communicative language disorders is infant speech production. Here we used daylong recordings of high- low-risk infant–mother dyads to examine whether acoustic–prosodic alignment as well two automated measures vocalization are related developmental risk status indexed via familial progress at 36 months age. Method Automated analyses the acoustics real-world interactions were pitch characteristics one by mother or child predicted those...
From early on, infants show a preference for infant-directed speech (IDS) over adult-directed (ADS), and exposure to IDS has been correlated with language outcome measures such as vocabulary. The present multi-laboratory study explores this issue by investigating whether there is link between later vocabulary size. Infants' was tested part of the ManyBabies 1 project, follow-up CDI data were collected from subsample dataset at 18 24 months. A total 341 (18 months) 327 (24 across 21...
We describe a corpus of speech taking place between 30 Korean mother–child pairs, divided in three groups Prelexical ( M = 0;08), Early-Lexical 1;02), and Advanced-Lexical 2;03). In addition to the child-directed (CDS), this includes two different formalities adult-directed (ADS), i.e., family-directed ADS (ADS_Fam) experimenter-directed (ADS_Exp). Our analysis MLU CDS, family-, found significant differences CDS ADS_Fam, ADS_Fam ADS_Exp, but not ADS_Exp. finding suggests that researchers...
8- and 14-month-old infants’ perceptual sensitivity to vowel duration conditioned by post-vocalic consonantal voicing was examined. Half the infants heard CVC stimuli with short vowels, half long vowels. In both groups, voiced voiceless final consonants were compared. Older showed significant mismatching consonant in condition but not condition; younger sensitive such either condition. The results suggest that extrinsic begins develop between 8 14 months.
Purpose The algorithm of the Language ENvironment Analysis (LENA) system for calculating language environment measures was trained on American English; thus, its validity with other languages cannot be assumed. This article evaluates accuracy LENA applied to Korean. Method We sampled sixty 5-min recording clips involving 38 key children aged 7–18 months from a larger data set. establish identification error rate, precision, and recall classification compared human coders. then examine...
The present study investigates Korean mothers' use of sound symbolism, in particular expressive lengthening and ideophones, their speech directed to children. Specifically, we explore whether the frequency acoustic saliency symbolic words are modulated by maturity children's linguistic ability. A total 36 infant-mother dyads, 12 each belonging three groups preverbal (M = 8-month-old), early 13-month-old), multiword 27-month-old) stage, were recorded a 40-min free-play session. results...
The location or even the existence of stress in Korean has been controversial. At same time, it widely assumed that phonemically long vowels, allowed phrase-initial position. This article considers these two key issues word-level prosody anew. I claim vowel Chonnam and Traditional Seoul dialect is an acoustic manifestation metrical head, show analysis based on accent rather than phonological length yields a simpler account shortening verbal suffixation. propose Seoul, there two-syllable...
Measuring eye movements remotely via the participant’s webcam promises to be an attractive methodological addition in-person eye-tracking in lab. However, there is a lack of systematic research comparing remote web-based with in-lab young children. We report multi-lab study that compared these two measures anticipatory looking task toddlers using WebGazer.js and jsPsych. Results our tested sample 18-27-month-old (N = 125) revealed successfully captured goal-based action predictions, although...
This study investigates age-related variations in the properties of Child-Directed Speech (CDS) and their impact on processing efficiency, particularly simulated word segmentation. By analyzing a corpus Korean CDS directed at 35 children aged 6 to 30 months, significant shifts were identified. The results revealed an inverse U-shaped pattern segmentability by age, with peak around 14 months. Further analysis indicated that effect age was significantly attenuated when linguistic taken into...
This paper discusses issues in building a 54-thousand-word Korean Treebank using phrase structure annotation, along with developing annotation guidelines based on the morphosyntactic phenomena represented corpus. Various methods that were employed for quality control are presented. The evaluation of and some NLP applications under development also
This study is an acoustic investigation of the acquisition vowel duration in children speaking American English. The primary goal was to find out when and how begin produce different durations as a function postvocalic voicing. A total 803 longitudinal data extracted from Providence Corpus were analyzed. age range covered by 0;11 4;0. findings are summarized follows: (1) Children control conditioned voicing before 2. (2) They also make durational distinction between tense lax vowels (3)...
The vowel/consonant ratio is a well-known cue for the voicing of postvocalic consonants. This study investigates how this changes as function speaking rate. Seven speakers North American English read sentences containing target monosyllabic words that contrasted in coda at three different rates. Duration measures were taken voice onset time (VOT) consonant, vowel, and coda. results show durations VOT vowel are longer before voiced codas, all segments increase monotonically rate decreases....
Child-directed speech (CDS) is produced with a slower tempo compared to adult-directed (ADS). Yet the characterization of CDS as simply slowly spoken masks number underlying subtleties. We investigated temporal characteristics function register based on highly controlled set elicited data. six sentence forms containing five monosyllabic words were read several times in declarative and question intonation three focus conditions ADS. After an evaluation data through perceptual rating task,...
This study examines the convergent validity between parental reports and direct measures of word comprehension in Korean infants. Parental reports, such as MacArthur-Bates Communicative Development Inventories, are commonly used language development research due to their ease use ability provide extensive data. However, there have been concerns about accuracy these assessing comprehension, parents can only infer from nonverbal responses. To address this issue, employs eye-tracking compare...
Abstract This study investigates infants’ enculturation to music in a bicultural musical environment. We tested 49 12‐ 30‐month‐old Korean infants on their preference for or Western traditional songs played by haegeum and cello. have access both environment as captured survey of daily exposure at home. Our results show that with less any kind home listened longer all types. The overall listening time did not differ between instruments. Rather, those high haegeum. Moreover, older toddlers...
This study tests the hypothesis that language input directed at young children exhibitsenhanced segmentability by examining interplay between properties in differentspeech registers and performance of segmentation algorithms. Employing a speaker-matched corpus naturalistic child-directed speech (CDS) adult-directed (ADS)in Korean, we observed Korean CDS is characterized shorter utterances words,lower lexical diversity, fewer hapax legomena interjections, more child-like nature, ahigher...