Exploring word-referent mapping in Mandarin-speaking late-talkers at 33 months and its language predictors at 27 months: An eye-tracking study.

BACKGROUND AND AIMS: This longitudinal study investigated the language skills, phonological working memory and lexical-tone perception of Mandarin-speaking late-talkers (LTs) and those with typical language development (TLD) at 27 months, while also examining their connections with novel word-referent mapping (W-R mapping) through eye-tracking at 33 months. METHODS AND PROCEDURES: Participants included 22 Mandarin-speaking 27-month-old LTs and 22 toddlers with TLD. Data on expressive and receptive language abilities, as well as phonological working memory and lexical-tone perception, were collected when participants were 27 months old. An eye-tracking paradigm was further employed during the word-learning tasks, which included W-R mapping and word-identification test (W-I test) phases at 33 months. Multilevel models were used to analyse participants' gaze pattern trajectories. OUTCOMES AND RESULTS: At 27 months, LT toddlers exhibited poorer language skills (receptive: p = 0.015, expressive: p < 0.001), lexical-tone perception (p < 0.001) and phonological working memory (p < 0.001) compared to those with TLD, even after considering maternal educational level and participants' fine motor ability. During the W-I test phase, we observed that LT toddlers showed a slower increase in fixations on the novel target image while listening to the corresponding novel word over time, compared to TLD toddlers (linear: p = 0.011, quadratic: p = 0.007) after adding confounders. Further, expressive language ability at 27 months old was a predictor of their newly established W-R mappings at 33 months old (p = 0.016). Additionally, the toddler's phonological working memory and lexical-tone perception were associated with their expressive language ability (p = 0.001 and < 0.001). CONCLUSIONS AND IMPLICATIONS: These findings indicate that the novel W-R mapping is not as robust in LTs as in TLDs, and the skills necessary for word learning share similarities with a wide range of expressive language abilities. Moreover, poor expressive language abilities were associated with deficits in lexical processing abilities; that is, phonological working memory and lexical-tone perception. These findings suggest the need for interventions aimed at improving LTs' lexical processing abilities to strengthen their lagging word-learning skills at toddlerhood. WHAT THIS PAPER ADDS: What is already known on this subject Late-talkers (LTs) exhibit delays in expressive vocabulary development. Furthermore, they also perform poorly in word learning. What this paper adds to existing knowledge The eye-tracking paradigm was employed and found that novel word-referent mapping (W-R mapping) is not as robust in LTs as in those with typical language development. Toddlers' early expressive language ability could predict their ability to establish novel W-R mappings. Furthermore, the better the phonological working memory and lexical-tone perception of LTs are, the better their early expressive language ability is. What are the clinical implications of this work? Interventions might consider incorporating strategies to improve phonological working memory and lexical-tone perception to help Mandarin-speaking LTs enhance linguistic capacities and build robust novel W-R mapping.

Event-related potentials of familiar monosyllabic words with unexpected lexical tones: A picture-word study of Mandarin-speaking preschoolers with and without a history of late talking.

This study examined how Mandarin-speaking preschoolers with and without a history of late talking (LT) process familiar monosyllabic words with unexpected lexical tones, focusing on both phonological and semantic violations. This study initially enrolled 64 Mandarin-speaking toddlers: 31 with a history of LT (mean age: 27.67 months) and 33 without a history of LT (non-LT) (mean age: 27.85 months). Event-related potentials were recorded at the age of 4 years during a picture-word mismatch task (LT mean age: 51.36 months; non-LT mean age: 51.20 months); in this task, the participants were presented with auditory words either matching (Tone 3) or mismatching with images in terms of their lexical tones; the mismatches encompassed acoustically dissimilar (Tone 1) and similar (Tone 2) mismatches. A significant difference in the phonological mapping negativity (PMN) responses to Tones 1 and 3 was observed only in the non-LT group. However, differences in the N400 responses to Tones 1 and 3 remained consistent across both groups. In addition, greater differences in the PMN responses between Tones 1 and 3 were associated with higher language proficiency during the preschool period. The PMN response serves as an indicator of neural correlates in lexical tone processing, reflecting challenges encountered by preschoolers with a history of LT when processing the lexical tones of familiar words. Furthermore, the PMN response was correlated with concurrent language abilities. These findings indicate the importance of early tonal perception development for Mandarin speakers with a history of LT. RESEARCH HIGHLIGHTS: Preschoolers with a history of late talking (LT), similar to preschoolers without such a history, can establish word expectations and detect the lexical tone violation in real time. However, those with a history of LT require additional time to process acoustic cues and differentiate between word semantics based on lexical tone information. The phonological mapping negativity response serves as an indicator of neural correlates in lexical tone processing, reflecting challenges encountered by preschoolers with a history of LT when processing the lexical tones of familiar words. The present findings indicate the importance of early intervention for Mandarin speakers with a history of LT, with an emphasis on lexical tone processing from toddlerhood.

Association between children's home-schooling and parental psychological distress during the COVID-19 pandemic in Taiwan: Risk and protective factors in a multilevel approach.

BACKGROUND: The role home-schooling of children in parental mental health during the COVID-19 pandemic in Taiwan remains unknown. This study aimed to assess the association between parental psychological distress and home-schooling in a socio-ecological context during the peak of the first wave of the COVID-19 pandemic in Taiwan. METHODS: This was a prospective cohort study. In total, 902 parents (father: n = 206, mother: n = 696) who home-schooled children under 18 years of age were recruited by purposive sampling from 17 cities in Taiwan. Data were collected between 19 July and 30 September 2021 through a survey. Multilevel regression models were used to examine the association between parents' psychological distress and home-schooling considering the characteristics at the person and city levels. RESULTS: Parental psychological distress was positively associated with difficulty in setting up electronic devices and increased disputes between parents and children, and it was negatively associated with time management and increased time spent bonding with their children during home-schooling (Ps < 0.05). Parents who had a child with health conditions, lived in an extended family, worked from home, lived during the Level 3 alert level, and lived with a median/sporadic level of the COVID-19 community spread by city also reported greater psychological distress (Ps < 0.05). However, parents who had greater household family support reported less psychological distress (P < .05). CONCLUSIONS: Clinicians and policy makers must carefully consider parental mental health while home-schooling during the COVID-19 pandemic in a broader socio-ecological context. A focus is advised on the home-schooling experiences of parents and other risk and protective factors for parental psychological distress at the person and city levels, especially for those with children who require medical interventions and have a medical condition.

The impact of parenting stress on parents of school-age children with drug-resistant epilepsy.

Background: Psychological burdens can affect the quality of life among parents of children with epilepsy, especially parents of children with poor seizure control. The impact of stress on the parents of children with epilepsy is significantly comorbid with their children's cognitive dysfunction and the severity of epilepsy. The aim of this study was to assess the stress levels of parents of school-age children with drug-resistant epilepsy (DRE) and controlled-epilepsy after considering the children's cognitive ability. Methods: The study participants consisted of 35 children with typical development in the control group, 25 in the controlled-epilepsy group, 26 in the DRE group, and their parents. We used the Chinese version of the Parenting Stress Index (PSI) to measure the stress levels of all parents; and the Wechsler intelligence scale for children-fourth edition (WISC-IV) Chinese version to assess the children's cognition levels. Results: Parenting stress was significantly higher among the parents of children with DRE than of those in the control and controlled-epilepsy group. The PSI's child domain showed statistically significant subscales of adaptability, acceptability, demandingness, and distractibility/hyperactivity. Moreover, the high-risk ratio on the acceptability, adaptability, demandingness, and distractibility/hyperactivity subscales were also higher for the DRE group than for the controlled-epilepsy group and for the control group. Conclusion: Seizure severity significantly influences parenting stress after considering cognitive dysfunction in children with epilepsy. Therefore, pediatricians and clinicians should consider epilepsy-specific stress in parents of children with DRE.

Temporal stability of parent-reported behavior problems in late talkers over 2 years: a prospective case-control study from toddlerhood to preschool age.

BACKGROUND: Late talking (LT) in toddlers is a risk factor for language weakness that may interfere with the development of using language to regulate behavior and emotion and contribute to the development of behavior problems from early childhood. This study examined the temporal stability of parent-reported behavior problems among Mandarin-speaking LT toddlers from ages 2 to 4 in Taiwan. METHODS: Thirty-one LT and 31 typical language development (TLD) toddlers were assessed for their vocabulary production at age 2 with the Words and Sentences Forms of the MacArthur-Bates Communicative Developmental Inventories Toddler Form (Taiwan version). Additionally, participants' receptive and expressive language abilities were assessed using the receptive and expressive language subscales of the Bayley Scales of Infant and Toddler Development, Third Edition. At age 4, the Child Language Disorder Scale-Revised was applied and included the two core subtests for auditory comprehension and expressive communication. At ages 2 and 4 years, behavior problems were assessed with the Child Behavior Checklist. RESULTS: There was a higher percentage of participants with persistent behavior problems among LT toddlers than among TLD toddlers. Moreover, toddlers with larger vocabularies were less likely to develop withdrawal behaviors by preschool age. CONCLUSIONS: This study supported the temporal stability of parent-reported behavior problems among LT toddlers across early childhood. Early identification of and intervention for behavior problems associated with LT in toddlerhood is essential to alleviate their behavior problems later in preschool years.

Social alienation of adolescents with obesity in classrooms: A multilevel approach.

INTRODUCTION: Adolescents with obesity are more likely to be isolated by peers, but whether they also choose to disengage from their peers remains unclear. METHODS: This study examined a sample of 646 adolescents between the age of 13 and 16 across 34 classrooms in 3 junior high schools in Taiwan, with data collected from May to June 2019. The sociometric network nomination method assessed peer relationships, such as unpopularity, unsociability, and alienation. Multilevel models were applied to explore the extent to which the class-level prevalence of overweight and obesity and peer support moderate the relationship between student-level obesity and peer relationships. RESULTS: Overall, students with obesity were more likely to experience unpopularity, unsociability, and alienation from their peers in classroom settings (adjusted odds ratio [AOR] = 1.904, 2.208, 2.777, p < .05). Regardless of their obesity status, students in high classroom peer support were less likely to report unsociability (AOR = 0.124, p < .05). No cross-level interactions were observed, indicating that students with obesity did not experience a reduction of peer rejection in high peer support classrooms. Neither did obese students in classrooms with higher rates of overweight and obesity. CONCLUSIONS: Students with obesity were more likely to experience interpersonal problems. Classroom peer support can increase peer acceptance for typical students but has no beneficial influence on adolescents with weight problems. Classroom peer support needs to be directed to become adequate support for students with obesity.

The school environment and bullying victimization among seventh graders with autism spectrum disorder: a cohort study.

BACKGROUND: There is strong evidence to support the association between bullying and the onset of mental health conditions in students with ASD (autism spectrum disorder). In Taiwan, the seventh grade marks the first year of middle school, following elementary school. This period is also when peers tend to perform bullying behaviours to establish status among the peer group. Therefore, seventh grade is considered one of the most challenging times for students with ASD due to several changes within the school environment and the developmental changes that arise at this age. This study aims to assess the association between the school environment and bullying victimization among students with autism spectrum disorder (ASD) enrolled in regular classes in their first year of middle school. METHODS: Data were obtained from the Special Needs Education Longitudinal Study database located in the Survey Research Data Archive of Academia Sinica. The analysis included one hundred eighty-four seventh graders with ASD who were in regular classes across Taiwan. The primary variables under study were whether the participants had experienced social exclusion, insults or teasing, extortion, or sexual harassment over the past semester. RESULTS: Participants with a higher positive friendship quality (P = 0.027) and who had received more peer support upon encountering difficulties in school (P = 0.041) were less likely to experience social exclusion. Participants with a higher positive friendship quality (P = 0.001) and a more positive classroom learning environment (P = 0.031) were less likely to have experienced insults or teasing. However, participants with more friends were more likely to be extorted (P = 0.015) and sexually harassed (P = 0.001) than those with fewer friends. Furthermore, participants in regular classes on a part-time basis were 2.59 times more likely to report sexual harassment than those in regular classes on a full-time basis (P = 0.021). CONCLUSIONS: This study suggests that a supportive school environment reduces the likelihood that seventh-graders with ASD will be bullied. Clinicians should consider the association between the school environment and bullying victimization among adolescents with ASD in regular classes during their first year of middle school.

Association of sibling presence with language development before early school age among children with developmental delays: A longitudinal study.

BACKGROUND/PURPOSE: Having siblings is a crucial ecological factor in children's language development. Whether siblings play a role in the language development of children with developmental delays remains unknown. This study therefore aimed to assess the association between sibling presence and changes in language trajectories of children with developmental delays before reaching early school age. METHODS: This retrospective cohort-sequential longitudinal study analyzed data from an institution designated by Taiwan's Ministry of Health and Welfare for assessing and identifying young children with developmental delays between December 2008 and February 2016. We included 174 children, aged 10-58 months (mean [standard deviation (SD)], 31.74 [10.15] months), with developmental delays who underwent at least three waves of evaluation. The final evaluation occurred at 37-90 months of age. Data collection spanned over an age from 10 to 90 months. The primary outcome was language delays as determined by board-certified speech-language pathologists. RESULTS: Of the 174 participants (131 boys), 64.94 % (n = 113) had siblings. The likelihood of both receptive language delay and expressive language delay for participants with siblings increased gradually from 10 to 90 months and exceeded that of participants without siblings, respectively (adjusted odds ratios [aOR], 1.04, 1.04; 95 % confidence interval [CI], 1.01-1.07, 1.01-1.07; P = 0.014, 0.020). CONCLUSION: Having siblings does not necessarily positively associate with language development in children with developmental delays. Clinicians should consider the association of sibling presence with language development for these children in a broader familial-ecological context before they reach early school age.

Behavioral problems of Mandarin-speaking late-talking toddlers and preschool aged children: A prospective case-control study in Taiwan.

This study aimed to examine whether Mandarin-speaking late-talking (LT) toddlers have a higher incidence of behavioral problems than typical language developing (TLD) children in toddlerhood and at preschool age from a community sample in Taiwan.This prospective case-control study comprised 32 LT and 32 TLD toddlers. Participants' parents provided reports about their children at 2 and 4 years using the Child Behaviors Checklist, a component of the Achenbach System of Empirically Based Assessment.The results indicated that compared to the TLD group, a higher percentage of the LT group was at risk of behavioral problems at both two and four years. Similarly, the chance of internalizing problems was higher in the LT group than the TLD group at both ages.The findings indicated that LT toddlers are at risk for behavioral problems not only in toddlerhood, but also at preschool age. Thus, it is crucial to identify LT toddlers with behavioral problems and enroll them in early developmental evaluation programs in their communities and also include them in early intervention programs if necessary. In addition, the underlying mechanism of the association between language delay and behavioral problems in children needs to be longitudinally explored from a young age.