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Originally published in 1932, Kathleen Tamagawa's pioneering Asian American memoir is a sensitive and thoughtful look at the personal and social complexities of growing up racially mixed during the early twentieth century. Born in 1893 to an Irish American mother and a Japanese father and raised in Chicago and Japan, Tamagawa reflects on the difficulty she experienced fitting into either parent's native culture.

We exploit ideas from high-dimensional data analysis to derive new portmanteau tests that are based on the trace of the square of the mth order autocorrelation matrix. The resulting statistics are weighted sums of the squares of the sample autocorrelation coefficients that, unlike many other tests appearing in the literature, are numerically stable even when the number of lags considered is relatively close to the sample size. The statistics behave asymptotically as a linear combination of chi-squared random variables and their asymptotic distribution can be approximated by a gamma distribution. The proposed tests are modified to check for nonlinearity and to check the adequacy of a fitted nonlinear model. Simulation evidence indicates that the proposed goodness of fit tests tend to have higher power than other tests appearing in the literature, particularly in detecting long-memory nonlinear models. The efficacy of the proposed methods is demonstrated by investigating nonlinear effects in Apple, Inc., and Nikkei-300 daily returns during the 2006-2007 calendar years. The supplementary materials for this article are available online.

Attachment is an innate human relational mechanism that develops progressively from early childhood, influences individuals’ representations and behaviors, shapes relationships, and affects the social and cultural environment. Parental bonding refers to the ability of parents to be emotionally and behaviorally available to the child during infancy. Attachment style refers to the individual’s relational attitude in close relationships that influences adult love, bonding, handling relationships, and social exploration. The role of intergenerational, cultural and developmental factors influencing the relationship between the attachment style in adulthood and the parental bonding style recalled during childhood has been debated. This study explores the relationships between recalled parental bonding, adult attachment style, and cultural background in a sample of Spanish, Italian, and Japanese adults using a cross-sectional and cross-cultural design. For this purpose, the validated versions of the Experience in Close Relationship Scale and the Parental Bonding Instrument were administered to a non-clinical population of three hundred and five participants in the three countries. Results show that the most frequent adult attachment style is the secure style, followed by the dismissing-avoidant, the preoccupied, and the fearful-avoidant style. The dismissing-avoidant style was the most frequent insecure attachment style in the Japanese sample whereas the preoccupied style was the most frequent insecure attachment style in the Italians and Spaniards. Japanese are more anchored to the memory of maternal and paternal overprotection, which is related to more avoidance in actual close relationships. Spaniard’s current relationships are mildly independent of recalled parental bonding, showing an association between lower current avoidance to primary parental care. In the Italian sample, there is no significant relationship between current adult close relationships and recalled parental bonding. These results suggest that different cultural models influence adult attachment representations differently, in terms of the weight placed on attachment-related avoidance, attachment-related anxiety, care, and overprotection in infant and adult relationships.

We developed and validated an instrument to measure community-level social capital based on data derived from older community dwellers in Japan. We used cross-sectional data from the Japan Gerontological Evaluation Study, a nationwide survey involving 123,760 functionally independent older people nested within 702 communities (i.e., school districts). We conducted exploratory and confirmatory factor analyses on survey items to determine the items in a multi-dimensional scale to measure community social capital. Internal consistency was checked with Cronbach's alpha. Convergent construct validity was assessed via correlating the scale with health outcomes. From 53 candidate variables, 11 community-level variables were extracted: participation in volunteer groups, sports groups, hobby activities, study or cultural groups, and activities for teaching specific skills; trust, norms of reciprocity, and attachment to one's community; received emotional support; provided emotional support; and received instrumental support. Using factor analysis, these variables were determined to belong to three sub-scales: civic participation (eigenvalue = 3.317, α = 0.797), social cohesion (eigenvalue = 2.633, α = 0.853), and reciprocity (eigenvalue = 1.424, α = 0.732). Confirmatory factor analysis indicated the goodness of fit of this model. Multilevel Poisson regression analysis revealed that civic participation score was robustly associated with individual subjective health (Self-Rated Health: prevalence ratio [PR] 0.96; 95% confidence interval [CI], 0.94–0.98; Geriatric Depression Scale [GDS]: PR 0.95; 95% CI, 0.93–0.97). Reciprocity score was also associated with individual GDS (PR 0.98; 95% CI, 0.96–1.00). Social cohesion score was not consistently associated with individual health indicators. Our scale for measuring social capital at the community level might be useful for future studies of older community dwellers. •Most study failed to capture multiple dimensions of community-level social capital.•We developed and validated 11-item health related community social capital scale.•The scale assessed civic participation, social cohesion, and reciprocity.

Discharge planning involves coordinating between different care settings. Failed coordination can lead to delayed care at the facilities receiving discharged patients. Nurses who implement discharge planning must consider the circumstances of the staff receiving the discharged patients. This study aims to develop a nurses' perspective-taking scale for measuring the cognitive process of imagining a staff's situation when receiving discharged patients. An online survey was conducted from September to November 2021 with nurses in Japanese acute care hospitals, using a 20-item questionnaire based on interviews and a literature review. Item reduction was conducted based on inter-item correlations, item-total correlations, and exploratory factor analysis. Confirmatory factor analysis was performed. For the exploratory and confirmatory factor analysis, the samples were randomly split in half and tested. Cronbach's alpha, intraclass correlation coefficients, and correlation coefficients were calculated using both self-developed and pre-existing measures. The questionnaire was distributed to 1,289 individuals, and 416 valid responses were obtained. Item reduction and exploratory factor analysis resulted in a 10-item scale with two subscales, \"imagine-other\" (six items), which is imagining the other person's situation, and \"imagine-self\" (four items), which is imagining oneself in the other person's situation. The goodness-of-fit indices were as follows: comparative fit index, 0.95; root mean square error of approximation, 0.08; and standardized root mean squared residual, 0.06. Correlation coefficients with existing scales were 0.38, 0.57, and -0.33. Cronbach's alpha was 0.89, and the intraclass correlation coefficient was 0.54. The newly developed scale proved to be reliable, valid, and suitable for use. This scale can measure the degree of perspective-taking by nurses, which can improve collaboration between facilities and the effectiveness of discharge planning.

Existing literature that examines the Hikikomori-like idiom of distress (HLID) initially labelled this phenomenon as a culture-bound syndrome. However, the increasing number of reports from other parts of the world suggest that HLID could instead be a culture-reactive idiom of distress, originating from biopsychosocial disequilibrium and cultural upheaval. The impact of imposed social withdrawal due to the Coronavirus 2 severe acute respiratory syndrome (SARS-CoV-2) pandemic on the growing prevalence of HLID has not yet been adequately explored. Aims: The first objective is to examine the factorial validity of the 25-item Hikikomori Questionnaire (HQ-25) in Oman. Second, we aimed to investigate the prevalence of HLID following the lifting of SARS-COV-2 restrictions in the Arabian Gulf country of Oman. The third related objective is to examine factors associated with the variation of HLID. This cross-sectional online survey was widely distributed across the diverse socio-demographic population residing in Oman. After the validation of the questionnaire and the factorial validity, the Arabic version of HQ-25 was used to explore the prevalence and factors associated with HLID. A total of 1529 participants were included in the study (response rate = 76.5%), of whom 44% (n = 673) expressed HLID. We randomly split it into half, one for exploratory factor analysis (EFA) (n = 764) and the other half for confirmatory factor analysis (CFA) (n = 765). From the EFA results, a three-factor model was found for the Omani version of HQ-25, which represented 52.87% of the variance with good internal reliability (Overall Cronbach's: 0.92; Socialisation: 0.92; Isolation: 0.84; Emotional support: 0.73). The CFA results report acceptable goodness-of-fit indices (χ2/df = 17.92, p < .001; CFI = 0.90; TLI = 0.95; RMSEA = 0.04, 95% CI 0.02-0.07; SRMR = 0.05) of the three-factor model of the collected samples. All 1529 data were used in the respondents. The results of the logistic regression showed that married marital status (OR = 1.51, 95% CI: 1.12-2.03, p = 0.007), older age (OR = 0.97, 95% CI: 0.95-0.99, p = 0.008), living in an urban area (OR = 0.71, 95% CI: 0.56-0.91, p = 0.006), unemployed occupational status (OR = 1.72, 95% CI: 1.30-2.88, p < .001), screen time (7+ hours vs. <4 hours: OR = 4.50, 95% CI: 3.16-6.41, p < .001; 4-7 hours vs. <4 hours: OR = 2.10, 95% CI: 1.61-2.70, p < .001), history of mental illness (OR = 3.70, 95% CI: 2.29-5.91, p < .001), and adverse childhood experiences (OR = 2.60, 95% CI: 2.03-3.20, p < .001) were significant risk factors for HLID. The factorial validity of the HQ-25 performed in this study appears to mirror the previously reported 3-factor structures. Some of the associated factors appear to support and, conversely, dissent from the findings of previous studies. These are discussed in terms of the attributions of the SARS-COV-2 pandemic, demographic trends in Oman, and sociocultural factors specific to the region of interest.

The traditional approach for estimating the b-value of the Gutenberg–Richter law, which is posited to inversely correlate with differential stress, has historically relied on the maximum likelihood technique, utilizing data from earthquakes exceeding a magnitude cutoff, Mc. This traditional approach is significantly influenced by the value of Mc, leading to extensive research focused on methods for determining Mc with greater accuracy. However, a recent study introduced a novel method based on the frequency distribution of magnitude difference, termed the b-positive method. This innovative method could enable more robust b-value estimations, even in scenarios where Mc may vary spatially and temporally. Our study concentrated on analyzing aftershocks, related to 25 magnitude-7 class earthquakes surrounding the Japanese archipelago. We estimated the b-values using both the goodness-of-fit test for Mc, a traditional approach, and the b-positive method. The aftershock data were examined over two distinct time frames: the initial 10 days following each mainshock and an extended period of 1000 days. Our findings indicated that the estimates produced by the b-positive method showed negligible variation between the 10-day and 1000-day aftershock periods (correlation coefficient of 0.95), whereas the traditional approach tended to yield lower b-values for the 10-day aftershocks compared to those from the 1000-day period. Variations in b-values, when analyzed using the traditional approach, could be inaccurately ascribed to temporal fluctuations in differential stress that may not actually be present. The b-positive method offers a vital solution to prevent these erroneous interpretations, serving as an essential alternative. Graphical abstract

Solar PV capacity growth in Japan has been facilitated by a number of government schemes that have been implemented since 1994. Publicly available capacity data are provided by a number of agencies and organisations at various resolutions and at different stages within these schemes. This study provides a comprehensive review of solar PV data sources in Japan between 1994 and 2019, as well as an introduction to the subsidy schemes and organisations involved in scheme management and data collection in Japan. As a result, the authors produced their own dataset of installed capacities and generation across time for the various regions. Lastly, this study provides insights and recommendations to policy makers regarding opportunities for improving the accessibility and quality of data from a user perspective and to enhance Japan’s presence in international research.

Background Supervisors of female migrant workers are expected to support their health, as migrant workers play a vital role in Japan’s economic development. However, this support relies on supervisors’ experience and efforts. Enhancing their competence can improve the quality of support. Therefore, this study aims to develop and validate the Health Support Competence Scale for Supervisors of Female migrant workers (HSCSS-F) to assess their competence in providing health support. Methods The cross-sectional study was conducted in two steps (i.e., preliminary and main studies) using a self-administered questionnaire. In total, 3,401 eligible supervisors were approached across Japan. Construct validity was evaluated using exploratory and confirmatory factor analyses, and reliability was assessed using Cronbach’s alpha for internal consistency. For concurrent validity, the correlation between the HSCSS-F and the Intercultural Sensitivity Scale (ISS) or the Health-oriented Leadership Staff-Care Value (HoL Staff-Care Value) was determined. Results The study extracted 22 items, which categorized into three factors, namely, health support through human resource development or cultural respect, and support for disease prevention and health promotion. Confirmatory factor analysis suggested a model that fit the data well, with a goodness of fit index = 0.903, adjusted goodness of fit index = 0.881, comparative fit index of 0.909, and root mean square error of approximation = 0.068. A Cronbach’s alpha of 0.925 confirmed internal consistency. The total HSCSS-F score was significantly positively correlated with score for ISS ( r  = 0.502, p  < 0.001) or the HoL Staff-Care Value ( r  = 0.463, p  < 0.001). Conclusion The HSCSS-F is a reliable and valid scale. It could provide supervisors not only with an appropriate assessment of support for the health of female migrant workers but also with a course of action. The acquisition and development of competence in the health support by supervisors would contribute to a healthy life for female migrant workers in a host country.

Objective The purpose of this study was to clarify the relationship between hope, psychological distress, and quality of life (QOL) of patients with advanced cancer undergoing cancer pharmacotherapy and their related factors. Methods Participants were patients with advanced lung, colorectal, and breast cancer undergoing outpatient pharmacotherapy. The Herth Hope Index, Hospital Anxiety and Depression Scale, and Functional Assessment of Cancer Therapy-General were used as measurement tools in a cross-sectional survey. Data were analyzed using descriptive statistics, correlation analysis, t -test, one-way analysis of variance (ANOVA), and Structural Equation Modeling (SEM). Results The number of valid responses to the questionnaire survey was 200 (91.7%). SEM included hope, psychological distress, QOL, social support, economic deprivation, physical symptoms, and performance status. The goodness of fit index for SEM was 0.989, adjusted goodness of fit index was 0.960, comparative fit index was 1.000, and root mean square error of approximation was 0.001. Hope had a negative impact on psychological distress (β = − 0.46) and a positive impact on QOL (β = .19). Conclusion Hope was shown to be a predictor of psychological distress and QOL in patients with advanced cancer receiving pharmacotherapy. Predictors of hope were social support and economic deprivation. The results suggest that early intervention for patients with characteristics that tend to lower levels of hope is effective in reducing patient anxiety and depression and improving QOL.