Search Results (148)

The bilingual advantage hypothesis proposes that bilingual children will display greater executive function (EF) skills compared to their monolingual peers. However, most research on this topic neglects to include monolingual children from both language groups for comparison, thus confounding language status and cultural context. To address this gap, we administered an extensive battery of EF tasks to 189 typically developing children ages 47–95 months (M_age = 71.47, SD = 11.68, 42.9 % Female) drawn from three language status groups: Korean-English Bilingual and English Monolingual (both in the northwestern United States) and Korean Monolingual (South Korea). Korean-English Bilingual children scored significantly higher on the EF composite than Korean Monolingual children, even after controlling for child age and verbal ability. Both English Monolingual and Korean-English Bilingual children waited significantly longer during a delay-of-gratification task than Korean Monolingual children when controlling for age and verbal ability. Korean-English Bilingual children outperformed English Monolingual and Korean Monolingual children on the Comprehensive Test of Nonverbal Intelligence. There were no significant differences between language status groups on the other individual EF tasks after adjusting for multiple comparisons. Taken together, we did not find consistent support for a bilingual advantage in EF skills: Country of residence also played a role, with children living in the United States outperforming children living in Korea in some cases. Full article

Background: Bilingual children are frequently exposed to accented speech, yet it remains unclear how accent familiarity affects their ability to learn new words. This study examined Spanish–English bilingual children’s (n = 46) novel word learning from speakers with familiar and unfamiliar accents and investigated individual differences related to learning from accented input. Methods: Children completed an experimental word-learning task in which they learned novel word–object pairings produced by three speakers: a speaker of General American English, a Spanish-accented English speaker (familiar accent), and a Korean-accented English speaker (unfamiliar accent). Individual-differences analyses examined associations between learning outcomes and children’s language skills, length of bilingualism, and characteristics of language input in the home environment. Results: Children showed more difficulty learning novel words from the unfamiliar Korean-accented speaker than from the familiar Spanish-accented speaker and the General American-English speaker. Language skills were associated with learning from the familiar accent but not the unfamiliar accent. Length of bilingualism was positively associated with learning from the unfamiliar accent, whereas greater strength of foreign-accented English in the environment was negatively associated with learning from the native speaker. Conclusions: These findings suggest that accent familiarity facilitates bilingual children’s word learning and that experience-related factors contribute to their ability to accommodate accent variability. Full article

Background: Despite a decline in lung cancer in the U.S., lung cancer among never-smoking Asian American (AsA) women is rising, and subgroup aggregation obscures heterogeneity. We compared primary lung cancer prevalence across disaggregated AsA subgroups and examined factors associated with prevalence such as personal- and family-cancer histories versus Non-Hispanic Whites (NHWs). Methods: This cross-sectional study analyzed electronic health records of AsA women (≥18) in a large Northern California health system (2010–2022). Lung cancer cases were obtained from the hospital registry and categorized by smoking status and self-reported ethnicity. Adjusted prevalence ratios (aPRs) were estimated using targeted maximum likelihood estimation, accounting for sociodemographic, smoking, and clinical covariates. Results: Among 1,843,119 women, 8651 had primary lung cancer; 2429 were never-smokers. In AsA never-smokers, aPRs and 95% confidence intervals versus age-matched NHW were: Chinese (3.36, [3.20–3.53]), Filipino (2.68, [2.55–2.82]), Vietnamese (2.07, [1.96–2.18]), Japanese (1.99, [1.89–2.10]), Korean (1.90, [1.80–2.00]), and Other Asian (0.35, [0.33–0.37]). Personal cancer-history reflected an increase in prevalence among Korean patients (2.91, [2.76–3.06]) while family cancer-history demonstrated increased prevalence among Chinese patients (1.51, [1.42–1.60]). Among women with uterine cancer, Chinese patients had higher lung-cancer prevalence than NHW (1.91, [1.58–2.31]). Conclusions: Never-smoking disaggregated AsA women show heterogeneous lung cancer prevalence, with higher prevalence in Korean women with personal cancer-history and in Chinese women with family cancer-history compared with NHW, supporting history-informed and ethnic-specific lung cancer screenings. Full article

Background: The American Society of Anesthesiologists Physical Status (ASA-PS) classification is widely used for perioperative risk stratification but is subject to inter-rater variability. The 2024 South Korean medical crisis abruptly shifted preoperative ASA-PS assessment from resident-led to specialist-centered care, providing a natural opportunity to examine how this transition affected ASA-PS distribution and prognostic performance. Methods: In this single-center retrospective cohort study, surgical patients during the pre-crisis (January 2022–December 2023) and crisis (March 2024–August 2025) periods were matched 1:2 by propensity score on age, sex, Charlson Comorbidity Index, surgical specialty, emergency status, and anesthesia type. The primary outcome was 30-day mortality; secondary outcomes were postoperative intensive care unit (ICU) admission and length of stay. ASA-PS discrimination was compared between periods using DeLong’s test, and ASA × crisis interaction terms were assessed by the likelihood ratio test. Results: A total of 53,895 cases (35,930 pre-crisis; 17,965 crisis) were matched, with all post-matching standardized mean differences below 0.1. ASA-PS demonstrated higher discrimination for 30-day mortality during the crisis than the pre-crisis period (area under the curve [AUC], 0.891 [0.863–0.919] vs. 0.827 [0.803–0.851]; ΔAUC = 0.064, p < 0.001). The ASA-PS × crisis interaction remained significant after adjustment (p = 0.014). Discrimination for ICU admission was similar between periods. Conclusions: ASA-PS classifications assigned during the crisis period were associated with higher discrimination for 30-day mortality than those from the pre-crisis period, suggesting that the operational performance of perioperative risk-assessment tools may vary with evaluator context and broader healthcare system conditions. Full article

Japan’s import market for wood pellets has expanded rapidly since the introduction of the feed-in tariff (FIT) scheme in 2012, with imports exceeding six million tonnes in 2024, positioning Japan as the world’s second-largest wood pellet importer. Despite this expansion, empirical evidence on its demand structure remains limited. This study employs a Dynamic Linear Approximate Almost Ideal Demand System (Dynamic LA-AIDS) model incorporating demand inertia stemming from long-term fuel supply contracts to analyze Japan’s wood pellet import demand from 2012Q1 to 2025Q3. The results reveal a distinct two-tiered structure: North American pellets behave as a strategic necessity, exhibiting price-inelastic demand and a tendency toward a stable long-run procurement pattern following price and expenditure shocks, suggesting procurement practices that prioritize supply security under long-term contracts. In contrast, Vietnamese pellets behave as a price-sensitive commodity, displaying price-elastic demand and relatively sustained responsiveness following such shocks. These results indicate a dual procurement strategy under the FIT scheme that balances stability and cost flexibility. Importantly, the Japanese demand structure differs from the more uniformly price-inelastic patterns observed in the EU and South Korean markets, providing new insights into how institutional frameworks shape biomass allocation and market responsiveness in renewable energy systems. Full article

This study evaluated the nutritional adequacy of commercial dog and cat foods in South Korea by comparing analytically determined nutrient contents with recommended nutrient levels of the National Institute of Animal Science (NIAS) and the Association of American Feed Control Officials (AAFCO). A total of 96 pet food products for puppies (n = 50), adult dogs (n = 18), kittens (n = 17), and adult cats (n = 11) were collected. Nutrients, including crude protein, crude fat, essential amino acids, essential fatty acids, major minerals, and selected trace nutrients, were analyzed using accredited methods stipulated by the Korean Feed Control Act and compared with NIAS and AAFCO recommendations. Most adult dog and cat diets met recommended nutrient levels; however, deficiencies were identified in diets intended for growth. Puppy foods showed inadequate levels of eicosapentaenoic and docosahexaenoic acids (EPA + DHA, 72%), calcium (22%), and phosphorus (42%), as well as imbalanced calcium-to-phosphorus ratios (12%). In kitten diets, insufficient EPA + DHA (41.2%) and taurine (11.8%) were observed. In contrast, 82.3% of products met label-declared guaranteed analysis values for seven mandatory nutrients. These results provide baseline information on the nutritional adequacy and labeling compliance of pet foods across different life stages. Full article

Language and discourse are central forces shaping representations of self and family creation in adoption narratives. Informed by theorizations of agency, as well as language and legitimacy, two transnational adopted persons engage in a collaborative autoethnography through electronically exchanged letters about the authors’ experiences as international and interracial Korean-American adopted persons. The resulting analysis uncovered how language and identity can intersect in adoption narratives, complicating adopted persons’ stories and their telling of them. The authors also explored the agentive potential of mushfake as hybrid and emerging discourse/Discourse. In narrating their experiences, the authors illuminated how adopted persons and other members of marginalized groups can exercise their agentive authority to take up and demand recognition of self-proclaimed identities which are situated in spaces of in-betweenness and becoming. Full article

Background/Objectives: Methicillin-resistant Staphylococcus aureus (MRSA) is a major causative pathogen in Republic of Korea. While numerous variants exist, the long-term evolutionary history of indigenous lineages remains unclear. Therefore, this study aimed to reconstruct the high-resolution population structure of Korean MRSA. Methods: A total of 191 MRSA clinical isolates collected between 1999 and 2025 were obtained from four Korean biobanks. Whole-genome sequencing was conducted and international MRSA genomes from the National Center for Bioinformatics were used as a control group. A genome-wide association study, including single-nucleotide polymorphism (SNP)-based phylogenomic analysis, principal component analysis (PCA), and ADMIXTURE, was performed for distribution analysis. A time-scale epidemiological analysis was conducted using SNP-based phylogenetic data. Additional profiling was performed via core genome multilocus sequence typing (cgMLST) for comparison with the SNP-based phylogenomic results. Finally, antimicrobial resistance and virulence factor genes were annotated using the ResFinder and VirulenceFinder databases. Results: Phylogenetic analysis identified five major clades: 1 (ST5), 2 (ST6), 3 (ST72), 4 (ST1/ST188), and 5 (ST8/ST239/ST254). Time-scaled analysis estimated that these major clades began to diverge in the early 20th century (e.g., Clade 1 around 1918). Notably, Korean ST5 isolates formed a sublineage distinct from North American strains, characterized by unique AMR profiles and divergence in the 1960s. ST72 formed an independent clade that was phylogenetically closer to clade 4 (ST1/ST188) than to the canonical CC8 group (clade 5). Furthermore, the ST1 isolates showed a temporal split into an older lineage and a recent sublineage, with expanded AMR pro-files. Conclusions: By integrating time-scale phylogenetics with cgMLST, we elucidated the evolutionary history and transmission dynamics of Korean MRSA. Full article

Background/Objectives: Socio-cultural adversities and health disparities across Asian American origin groups remain understudied, particularly in early childhood. This limits the development of culturally responsive prevention and intervention strategies. A family-based Asian American epidemiologic study is essential to address these gaps and to inform tailored solutions. As an initial pilot effort, this pilot study was designed primarily to assess feasibility and generate preliminary data to inform future hypothesis-driven, large-scale epidemiologic research. The study objectives were to evaluate the feasibility of a remote study protocol and to collect preliminary data on child development and parental factors among Asian Indian, Filipino, and Korean American families with young children. Methods: A remote pilot study was conducted in 2024–25 among 48 mother–father–child (age 1–4 years) triads residing in Illinois, including 18 Asian Indian, 12 Filipino, and 18 Korean American mothers. Parents completed an online survey, and children wore an ActiGraph accelerometer on their hips. Analyses were conducted to describe child development, parental experiences, and parenting practices among the three ethnic groups. Results: Of the 48 mothers, 29 (60%) were US-born, and all but 1 had at least a bachelor’s degree. All parent pairs completed the survey, whereas only 34 children (71%) provided valid accelerometer data. Disaggregated data showed that, compared to children of Asian Indian mothers, children of Filipino mothers had higher daily screen time (p < 0.10) and higher sleep problem scores (p < 0.05), and children of Korean mothers had higher child–caregiver interaction scores (p < 0.05). Across all three groups, more favorable parenting practices were associated with lower sleep problem scores, higher wellbeing scores, and higher child–caregiver interaction scores (p < 0.01). Conclusions: The remote study protocol was generally feasible; however, child compliance with hip accelerometer wear was suboptimal. Preliminary data revealed differences in children’s physical behaviors and social-emotional development across Asian ethnic groups. A full-scale study should enhance the engagement of socioeconomically diverse families and refine wearable data collection methods to improve data representativeness and completeness. Full article

Background/Objectives: Thyroid nodules are a prevalent condition with a high incidence rate of malignancy. Ultrasound (US)-based risk stratification systems have become widely utilized for the evaluation of thyroid nodules, including the American Thyroid Association (ATA) guidelines, the American College of Radiology Thyroid Imaging Reporting and Data System (ACR-TIRADS), the Korean Society of Thyroid Radiology system (K-TIRADS), and the European Thyroid Association system (EU-TIRADS). Our institution has developed a real-time computerized score for evaluating thyroid nodules. This study aims to systematically compare the diagnostic performance of these systems when applied in real time by otolaryngologists, who integrate dynamic US imaging with physical examination. Methods: Patients with thyroid nodules who underwent US evaluation, US-guided fine-needle aspiration cytology (FNAC), and subsequent thyroidectomy were included. During each examination, otolaryngologists performed real-time risk categorization according to five US-based systems, with immediate scoring based on dynamic sonographic findings. Results: From April 2021 to November 2023, 130 patients were enrolled. For categories 4 and 5, the ATA guidelines had a sensitivity of 96.6% (95% CI: 87.3–100%), specificity of 78.9%, (60.6–97.3%) PPV of 84.6% (70.7–98.5%), NPV of 93.7% (81.9–100%), and accuracy of 88.1% (78.3–97.9%). The sensitivity of the ACR-TIRADS was 95.6% (87.3–100%), the specificity was 78.9% (60.6–97.3%), the PPV was 84.6% (70.7–98.5%), the NPV was 93.7% (81.9–100%), and the accuracy was 88.1% (78.3–97.9%). Both the K-TIRADS and the EU-TIRADS had sensitivities of 95.6% (87.3–100%), specificities of 78.9% (60.6–97.3%), PPVs of 84.6% (70.7–98.5%), NPVs of 93.7% (81.9–100%), and accuracies of 88.1% (78.3–97.9%). The computerized score (>3.3 considered malignant) and TBSRTC (Category 5 or 6) both had sensitivities of 73.9% (56.0–91.9%), specificities of 100%, PPVs of 100%, NPVs of 76.0% (59.3–92.7%), and accuracies of 85.7% (75.1–96.3%). Conclusions: Otolaryngologists can achieve highly accurate diagnostic performance when applying standardized ultrasound-based risk stratification systems, and a real-time computerized scoring system provides highly specific supplemental value for immediate clinical decision-making. Full article

The 10.29 Itaewon Disaster in Seoul, which claimed 159 lives during a Halloween celebration in 2022, has divided Korean Protestant discourse on Halloween into two opposing theological positions: one that interprets Halloween as inherently superstitious and satanic based on its historical origins, and another that embraces it as a contemporary youth cultural phenomenon worthy of protection under principles of cultural diversity. These theological frameworks are intertwined with questions of disaster accountability within the political–historical context of Korean Protestantism’s social engagement, with the former—corresponding to the conservative stream of Korean Protestantism—implicitly attributing responsibility to festival participants while absolving the government, whereas the latter—corresponding to the progressive stream—emphasizes institutional failures in crowd management and public safety protocols. Through comparative analysis with established American Protestant discourse on Halloween, this study examines how Korean Protestant theological interpretations of Halloween intersect with both the specific context of the 10.29 Itaewon disaster and political orientations within Korean Protestantism. The research draws on diverse primary sources, including articles, commentaries, official statements, social media discourse, and sermonic materials, to analyze the emergent Protestant narratives following the disaster. Full article

This study critically examines the civil–religious influence of Korean conservative Protestantism, which mobilizes heteronormative strategies to oppose anti-discrimination and family rights legislation, through the lens of Christian normativity. These movements justify heteronormative values by appealing to the immutability of the “creation order” in Genesis. Yet such literalist interpretations disregard contemporary findings in evolutionary biology and animal behavior that document same-sex phenomena across species, thereby framing creation and evolution in rigid opposition. Imported from American fundamentalism, “creation science” has further fueled an anti-intellectual public sentiment that naturalizes heterosexuality as divine law. The absolutism of the creation order and special revelation exposes deep theological contradictions when confronted with the existence of diverse sexual and gender identities. In response, this study turns to process theology, which reimagines creation as open-ended, dynamic, and co-creative. Engaging Catherine Keller’s apophatic theology to reopen theological space for sexual minorities, it further develops Justin Sabia-Tanis’s interpretation of transgender transformation as a process of co-evolution, in dialogue with Donna Haraway’s notion of cyborg hybridity. Moreover, drawing on John B. Cobb Jr.’s “persuasive political theology,” it argues that participation in divine co-creation must be expanded into the socio-political sphere. Ultimately, this study seeks to resist anti-intellectualism and advocate for a transformative Christian civil religion in Korea—one oriented toward justice, inclusion, and continual co-creation. Full article

Background: Gastric cancer (GC) remains a significant health burden in the U.S, particularly among ethnic minorities. We identified patient-level risk factors contributing to advanced-stage (AS) diagnosis and poor survival to guide strategies to address GC-related health disparities. Methods: We conducted a retrospective cohort analysis of 18,396 histologically confirmed GC cases (4102 early-stage (ES) and 14,294 AS) diagnosed between 2000 and 2019, using data from the California Cancer Registry linked to the California Office of Statewide Health Planning and Development. Eligible cases were adults age ≥ 18 with complete diagnostic and follow-up data. Multivariable logistic and Cox regression models were used to identify predictors of AS-GC and five-year disease-specific (DSS) and overall-survival (OS) outcomes. Analyses were further stratified by Asian and Hispanic subgroups. Results: Korean heritage was the strongest predictor of ES-GC [OR 0.58 (95% CI, 0.47–0.71), p < 0.001] and was independently associated with the lowest GC-specific mortality risk [HR 0.73 (95% CI: 0.67–0.80), p < 0.0001]. The youngest age group (18–44 years) had the highest AS-GC rate (91.4%). Asian ethnicity, receipt of care at NCI-designated cancer centers, and prior upper endoscopy were associated with improved OS and DSS. In contrast, comorbidities such as GERD, diabetes, liver disease, smoking and alcohol abuse, and older age ≥ 75, U.S.-birth, and rural residence were linked to worse outcomes. Conclusions: Distinct demographic, clinical, and healthcare access factors contribute to disparities in GC outcomes. These findings support the development of culturally tailored early-detection programs, and risk-based screening for GC care, particularly in vulnerable populations. Full article

The U.S. was constructed on a Black–white racial hierarchical system to maintain the subjugation of communities of color, of which we understand through racial formation that race continues to adapt and evolve to support structures of anti-Black racism. Our project centers racial formation as our theoretical framing for why race categories exist under a white supremacist, anti-Black system that profits from hierarchical inhuman realities. This critical collaborative autoethnography explores the learning journeys of one biracial Korean faculty member and one Lebanese-American undergraduate in their continued inquiry about erasure/affirmation of mixed-race and MENA identities. We explored the in-between gray spaces that our mindbodyspirits move through, and revealed the systematic impact of violent structures on our racialized mind–body–spirits. Findings allude to the limits of our belonging, in relation to dominant structures that cannot hold our in-between experiences. We urge social justice professions to recenter the literal marginal voices of mixed-race and MENA peoples as essential in the relational racial healing and restorative journeys of our multiracial and intersecting communities of color. Full article

Background: Cardiovascular disease (CVD) is a major complication of systemic lupus erythematosus (SLE). This study compared several CV risk scores in Korean female patients with SLE and searched for an association with subclinical atherosclerosis and lipid metabolism. Methods: Female SLE patients and healthy controls (HCs) underwent carotid ultrasonography and pulse wave velocity (PWV), and serum efflux cholesterol capacity was measured. The Framingham risk scores (FRSs), American College of Cardiology/American Heart Association (ACC/AHA) scores, and Korean Risk Prediction Model (KRPM) scores were calculated. Results: While carotid intima-media thickness (IMT) and the prevalence of carotid plaque did not differ between 67 SLE patients and 37 HCs, carotid plaque scores were higher in SLE patients compared with HCs. While the FRS and the ACC/AHA CV risk scores did not differ, the KRPM scores were higher in SLE patients. The carotid IMT, plaque score, and PWV were correlated with the FRS, ACC/AHA CV risk, and KRPM score in SLE patients. SLE patients with carotid plaque had higher FRS, ACC/AHA CV risk, and KRPM scores than those without carotid plaque. In addition, the serum cholesterol efflux capacity did not differ between SLE patients with and without carotid plaque but was correlated with carotid IMT. Conclusions: The scores obtained from the CV risk-prediction models were correlated with subclinical atherosclerosis in SLE. A cardiovascular risk assessment tool developed specifically for Koreans is suitable for evaluating the CV risk in Korean SLE patients. Full article