Publications

This study examines how center-based parenting interventions aimed at improving early child development in rural China affect the mental health of caregivers. Data from an analytic sample of 615 caregiver–child dyads (children aged 6 to 24 months, 48.5% girls; data collection: 2015–2017) in a 2-year cluster randomized controlled trial conducted in 100 villages showed that the intervention had no significant effect on caregiver depressive (β = − .047, SE = .079), anxiety (β = .040, SE = .076), or stress (β = .032, SE = .081) symptoms. Subgroup analyses found no significant difference in effects on mental health by prespecified characteristics after adjustment for multiple comparisons, except that the caregivers of children without social–emotional delay at baseline exhibited lower depression scores after the intervention (β = − .205, SE = .097, p = .043). The findings suggest that the center-based parenting intervention focused solely on strengthening parenting skills may be insufficient to improve caregiver mental health over 2 years.

China’s urbanization has created growing peri-urban communities, where children face challenges to early childhood development (ECD) despite proximity to developed urban areas. Little is known about how the environmental factors of ECD differ between rural migrants and new urban residents. To address this, we sampled 77 peri-urban households with 18–24-month-old Han Chinese children to examine the associations between early cognitive and language development, parental self-efficacy, stimulating parenting practices, and the home language environment measured with Language Environment Analysis (LENA). We find that rural migrants and new urban residents exhibited no significant difference in any child or household characteristic except parental residency. There was no significant difference in the family environment factors or early cognitive or language development, either. However, parental self-efficacy and stimulating parenting practices both predicted better cognitive and language development in rural migrant households, whereas only conversation turn counts predicted better language development in new urban resident households.

Purpose: This mixed-methods study examined how differences in parental time, knowledge, and economic constraints, as well as community socioeconomic contexts, may contribute to differences in home language environment and child language ability outcomes between peri-urban and rural households in China.

Method: We conducted an explanatory sequential mixed-methods analysis using data from 158 children aged 18–24 months among peri-urban and rural households with low socioeconomic status (SES) in southwestern China. Audio recordings were collected from each household and analyzed using the Language ENvironment Analysis system. The Mandarin version of the MacArthur–Bates Communicative Development Inventories was administered to each child's primary caregiver. We also conducted qualitative interviews with primary caregivers in 31 peri-urban and 32 rural households. Interviews were recorded, transcribed, and coded.

Results: The quantitative results reveal that children in peri-urban households heard less adult speech and had lower language ability than children in rural households. Directed content analysis of interviews found that peri-urban caregivers faced more severe time constraints and less favorable community socioeconomic contexts than rural primary caregivers. Taken together, these findings suggest that differences in time constraints and community socioeconomic contexts between the two populations are the most likely factors contributing to the inferior language environment and language ability among children in peri-urban households.

Conclusion: The mixed-methods study indicated that parental time constraints and community socioeconomic contexts should be considered alongside SES for a comprehensive understanding of factors influencing parental investment in the home language environment in China.

In rural China, there exists a gender gap in academic achievement where girls outperform boys, suggesting similar differences in early language development. Moreover, recent research has revealed that children in peri-urban communities have worse language outcomes than children in rural communities. This study examines the impact of gender on early language development in low-SES, peri-urban Chinese communities. Data from 81 children (56.79% boys) aged 18-24 months (Mage = 21.16) living in peri-urban China were collected using two caregiver-reported tests for child language development and ability, and language environment analysis technology for measuring the home language environment. Results show that in peri-urban communities, girls were generally exposed to more adult-child conversations and showed higher counts of vocalizations than did boys; girls scored higher on language development measures than did boys. The implications of these findings on the gender gap and child development are discussed.

Rural girls in China stay in school longer than boys and outperform them in many subjects. This gender gap suggests analogous disparities in early childhood development, a key factor in later educational outcomes. This study examines gender disparities in social-emotional development among 1,301 children aged 18–30 months in rural China. Results indicate that male children trail their female counterparts by 0.18 SD on average on the scale of standardized ASQ:SE score. A large share of the difference is driven by the bottom 10 % of children, where the magnitude of the gender gap (0.34 SD) is 1.9 times larger than at the median (0.19 SD). Demographic characteristics are uncorrelated with the gender gap in heterogeneity analysis, suggesting that the mechanisms underlying observed gender disparities are similar across rural Chinese households.

To examine the association between electronic media exposure and parental language input, Language Environment Analysis technology was used to collect data on electronic media exposure and parental language input in 158 peri-urban and rural households with children aged 18–24 months in southwestern China. The sounds children made and the sounds they heard were quantified. Multiple linear regression and quantile linear regression were used to determine the relationship between electronic media and the outcomes of interest. The results showed that each hour of electronic media exposure was associated with reduced conversational turn count (p < .05) and child vocalization count (p < .05). A large share of the reduction was driven by the higher quantile of children. Reductions associated with electronic exposure were also observed in number of segments and conversational turns. These results may help explain the association between child electronic media exposure and language delay in an under-studied and at-risk population.

Despite the proliferation of education technologies (EdTech) in education, past reviews that examine their effectiveness in the context of low- and middle-income countries are few and rarely seek to include studies published in languages other than English. This systematic review investigates the effectiveness of educational technology on primary and secondary student learning outcomes in China via a systematic search of both English- and Chinese-language databases. Eighteen (18) unique studies in 21 manuscripts on the effectiveness of EdTech innovations in China met the eligibility criteria. The majority of these evaluate computer aided self-led learning software packages designed to improve student learning (computer assisted learning, CAL), while the rest evaluate the use of education technology to improve classroom instruction (ICI) and remote instruction (RI). The pooled effect size of all included studies indicates a small, positive effect on student learning (0.13 SD, 95% CI [0.10, 0.17]). CAL used a supplement to existing educational inputs – which made up the large majority of positive effect sizes – and RI programs consistently showed positive and significant effects on learning. Our findings indicate no significant differences or impacts on the overall effect based on moderating variables such as the type of implementation approach, contextual setting, or school subject area. Taken together, while there is evidence of the positive impacts of two kinds of EdTech (supplemental computer assisted learning and remote instruction) in China, more evidence is needed to determine the effectiveness of other approaches.

The objective of the current study is to examine the impact of an in-school computer-assisted learning (CAL) intervention on the math achievement of rural students in Taiwan, including a marginalized subgroup of rural students called Xinzhumin, and the factors associated with this impact. In order to achieve this, we conducted a cluster randomized controlled trial involving 1,840 fourth- and fifth-grade students at 95 schools in four relatively poor counties and municipalities of Taiwan during the spring semester of 2019. While the Intention-To-Treat (ITT) analysis found that the CAL intervention had no significant impacts on student math achievement, the Local Average Treatment Effect (LATE) analysis revealed significant associations with the math performance of the most active 20% of students in the treatment group. LATE estimates suggest that using CAL for more than 20 minutes per week for ten weeks corresponds to higher math test scores, both in general (0.16 SD–0.22 SD), and for Xinzhumin students specifically (0.3 SD–0.34 SD). Teacher-level characteristics were associated with compliance rates.

Parental investment in the home language environment during the earliest years is a critical predictor of early language development. Because most studies investigating the home language environment and child language development have been conducted in Western, high-income, and developed settings, less is known about such environments in low- or middle-income settings. This study was conducted in a peri-urban area in Southwestern China in a sample of 81 rural migrant and urbanized farmer families with children aged 18-24 months. The home language environment was measured using Language Environment Analysis (LENA) recorders and software, while early language development was measured using the MacArthur-Bates Communicative Developmental Inventories expressive vocabulary scale. Findings reveal large and substantial variation in the sample's home language environments and a strong association between the home language environment and child language development. Certain demographic characteristics, such as household resources, maternal employment, and gender, are associated with the home language environment. These findings highlight the needs for interventions specifically targeting the home language environment to improve early language development of young children and for more research on early childhood development in peri-urban China.

Using premier Language Environment Analysis technology to measure and analyze the home language environment, this observational study aims to describe the home language environment and child language ability, drawing on empirical data from 77 households with children aged 18–24 months from rural China. The results show large variation in measures of the home language environment and early language ability, similar to other rural Chinese samples. Results also demonstrate significant correlations between child age and the home language environment, maternal employment and the home language environment, father’s educational attainment and the home language environment, adult–child conversations and early language ability, and child vocalizations and early language ability.

Background
A rich language environment is an important element of a nurturing home environment. Despite their proven importance, vocabulary and conversation have been shown to vary widely across households—even within the same socio-economic class. One significant gap in the existing literature is its nearly exclusive geographic focus on Western and developed settings, with little attention given to poorer communities in lower/middle income countries. The purpose of this study was to empirically illustrate the characteristics of the home language environment in the low SES, non-Western cultural setting of rural China.

Methods
Using Language Environment Analysis (LENA) automated language-analysis system, this study measured the home language environment of 38 children aged 20-27 months in Northwest rural China. Our primary measures of the home language environment were Adult Word Count (AWC), Conversational Turn Count (CTC) and Child Vocalization Count (CVC). Multivariate linear regression models were used to examine the association between home language environment and family/child characteristics, and language skills (Measured by MacArthur-Bates Communicative Developmental Inventory score).

Results
In this paper, by comparison, we found that the home language environment of our rural sample fell far behind that of urban households. We also identify significant, positive correlations between language skills and both AWC and CTC. Our analysis finds no significant correlations between home language environment and family/child characteristics.

Conclusion
In this paper, we present the first ever findings using the LENA system to measure the home language environment of young children from poor rural communities in China. We found that the home language environment of lower-SES household was significantly worse than high-SES households, and demonstrated the importance of the home language environment to language skills, pointing to a need for more high-quality studies of the home language environment in rural China to better understand possible mechanisms behind low levels of parent-child language engagement and ways to improve the home language environment.

Research suggests that elements of the family environment may have significant associations with cognitive and language development outcomes. Less is known, however, about the family environment in peri-urban China, where rates of cognitive and language delay in children aged 0-3 years are as high as 51% and 54%, respectively. Using data collected from 81 peri-urban households with toddlers aged 18-24 months in Southwestern China, this study examines the associations between stimulating parenting practices, the home language environment, and parental self-efficacy, with cognitive and language development. The results indicate that stimulating parenting practices was significantly associated with cognitive development, the home language environment was significantly associated with language development, and parental self-efficacy was significantly associated with cognitive development. The implications of such findings reveal several mechanisms for supporting healthy cognitive and language development among toddlers from peri-urban China.