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Home Environment, But Not Socioeconomic Status, is Linked to Differences in Early Phonetic Perception Ability.

ABSTRACT: Infants perceptually tune to the phonemes of their native languages in the first year of life, thereby losing the ability to discriminate non-native phonemes. Infants who perceptually tune earlier have been shown to develop stronger language skills later in childhood. We hypothesized that socioeconomic disparities, which have been associated with differences in the quality and quantity of language in the home, would contribute to individual differences in phonetic discrimination. Seventy-five infants were assessed on measures of phonetic discrimination at 9 months, on the quality of the home environment at 15 months, and on language abilities at both ages. Phonetic discrimination did not vary according to socioeconomic status (SES), but was significantly associated with the quality of the home environment. This association persisted when controlling for 9-month expressive language abilities, rendering it less likely that infants with better expressive language skills were simply engendering higher quality home interactions. This suggests that infants from linguistically richer home environments may be more tuned to their native language and therefore less able to discriminate non-native contrasts at 9 months relative to infants whose home environments are less responsive. These findings indicate that home language environments may be more critical than SES in contributing to early language perception, with possible implications for language development more broadly.

SUBMITTER: Melvin SA

PROVIDER: S-EPMC7458123 | biostudies-literature | 2017 Jan-Feb

REPOSITORIES: biostudies-literature

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Home Environment, But Not Socioeconomic Status, is Linked to Differences in Early Phonetic Perception Ability.

Melvin Samantha A SA Brito Natalie H NH Mack Luke J LJ Engelhardt Laura E LE Fifer William P WP Elliott Amy J AJ Noble Kimberly G KG

Infancy : the official journal of the International Society on Infant Studies 20160331 1

Infants perceptually tune to the phonemes of their native languages in the first year of life, thereby losing the ability to discriminate non-native phonemes. Infants who perceptually tune earlier have been shown to develop stronger language skills later in childhood. We hypothesized that socioeconomic disparities, which have been associated with differences in the quality and quantity of language in the home, would contribute to individual differences in phonetic discrimination. Seventy-five in ...[more]

PMID: 32874141

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Project description:BackgroundThe relative role of socioeconomic status (SES), home environment and maternal intelligence, as factors affecting child cognitive development in early childhood is still unclear. The aim of this study is to analyze the association of SES, home environment and maternal IQ with child neurodevelopment at 18 months.MethodsThe data were collected prospectively in the PHIME study, a newborn cohort study carried out in Italy between 2007 and 2010. Maternal nonverbal abilities (IQ) were evaluated using the Standard Progressive Matrices, a version of the Raven's Progressive Matrices; a direct evaluation of the home environment was carried out with the AIRE instrument, designed using the HOME (Home Observation for Measurement of the Environment) model; the socioeconomic characteristics were evaluated using the SES index which takes into account parents occupation, type of employment, educational level, homeownership. The study outcome was child neurodevelopment evaluated at 18 months, with the Bayley Scales of Infant and Toddler Development Third Edition (BSID III). Linear regression analyses and mediation analyses were carried out to evaluate the association between the three exposures, and the scaled scores of the three main scales of BSID III (cognitive, language and motor scale), with adjustment for a wide range of potential explanatory variables.ResultsData from 502 mother-child pairs were analyzed. Mediation analysis showed a relationship between SES and maternal IQ, with a complete mediation effect of home environment in affecting cognitive and language domains. A direct significant effect of maternal IQ on the BSID III motor development scale and the mediation effect of home environment were found.ConclusionsOur results show that home environment was the variable with greater influence on neurodevelopment at 18 months. The observation of how parents and children interact in the home context is crucial to adequately evaluate early child development.

Project description:The developmental health of young children is highly influenced by the socioeconomic conditions in which they are raised. How to accurately measure these conditions is a point of debate in the current literature on child development, health, and social determinants. We have evaluated four existing indices of socioeconomic status (SES) to determine the most relevant for the analysis of early childhood development (ECD) in Canada. Following a literature review of published SES indices which used 2006 Canadian Census data, four indices were chosen based on their relevance to ECD and the number of citations in subsequent articles. These were: the Canadian Deprivation Index, the Socioeconomic Factor Index, the Canadian Marginalization Index and an index created by the Early Childhood Mapping Project in Alberta, Canada. The indices were replicated using SES data for 2038 customized geographic neighbourhoods encompassing 99.9% of the Canadian population, and the relationship of the indices to ECD was investigated by linking to aggregated data from the Early Development Instrument (EDI), a teacher-completed questionnaire used to assess kindergarten children's physical, social, emotional, and cognitive development, and communication skills. The derived SES indices were compared based on four criteria: the input variables used, the index structure, the interpretability of the index and the variance they explained (R2) in the different EDI outcome measures. In terms of variance explained, material components of the SES indices (e.g., income, education) consistently showed the strongest association with children's language and cognitive development. The patterns of association for the non-material SES components and the other developmental domains of the EDI were more complex. We discuss the findings in regard to current developments in the field, and the need for refining empirical and theoretical approaches to examine associations between different facets of SES contextual factors and different aspects of ECD outcomes.

Project description:The incidence of chronic diseases increases with age; about 73% of people who are aged ?60 years suffer from at least 1 chronic disease, and among those older than 70 years, chronic diseases afflict more than >84% of the population. According to epidemiological data, at least 4 chronic disease types coexist in senior citizens, causing their disability. These are mainly cardiovascular diseases; motor system diseases; ophthalmological, auditory, neurological, and mental diseases; and mental impairment. They worsen or limit self-dependence in everyday activities. The process begins with complex activities and advances with age. At first, functional performance deficits are discreet; then, they may gradually lead to complete dependence on other people or institutions.This study aimed to assess the relationship between diseases and health behaviors, as well as the everyday functioning of people aged ?65 years staying in their home environment.The research involved 504 elderly people. The inclusion criteria were age (?65 years) and staying in one's own home environment. The direct interview technique was applied, as well as use of proprietary interview questionnaire and standardized tools used in geriatrics: Barthel scale, measuring performance in everyday activities, and the Instrumental Activities of Daily Living scale, assessing complex everyday activities.The most frequent disease among the responders was arterial hypertension (77.58%), followed by degenerative joint disease (62.10%), and circulatory failure (43.23%). Lower functional performance was associated with circulatory failure, cerebral stroke, atherosclerosis, Alzheimer's disease, diabetes, Parkinson's disease, degenerative joint disease, and bronchial asthma. Performance worsening significantly influenced the frequency of hospitalizations, with a mean score of 4.31 per person. Medical rehabilitation was practiced by 18.65% of the responders.Circulatory failure, cerebral stroke, atherosclerosis, bronchial asthma, diabetes, degenerative joint disease, Parkinson's disease, and Alzheimer's disease negatively affect functional performance in elderly people. Hospitalization rates increase with lowering independence in everyday functioning. Future research is needed with regard to the relationship between the practiced rehabilitation and independence in everyday functioning of the elderly.

Dataset Information

Home Environment, But Not Socioeconomic Status, is Linked to Differences in Early Phonetic Perception Ability.

Publications

Home Environment, But Not Socioeconomic Status, is Linked to Differences in Early Phonetic Perception Ability.

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