Prior work has indicated that female adolescents mature more quickly than males with regard to the various personality dimensions. From the developmental perspectives, this study aimed to explore gender differences in the relationships between resilience and the Big Five personality traits in Japanese adolescents. Middle school students (N = 310, 155 females, age range = 14–15 years) participated in an online survey. The results demonstrated that females had higher Conscientiousness than males. Stepwise regression analyses indicated that Neuroticism was the most influential predictor of resilience in females, whereas Extraversion was the most important predictor in males. Multigroup path analysis demonstrated that the effect of Neuroticism on resilience was greater for females; however, the effects of all other variables did not differ across genders. Considering gender differences is important to understand the relationship between resilience and the Big Five dimensions among adolescents.

Some researchers indicate that the transition to high school deflects adolescent developmental trajectories. Others assert that it provides a new possibility for the promotion of adolescents' socioemotional well-being. One critical view missing in such claims is that individual variabilities interact with environmental influences. We employed the framework of Differential Susceptibility Theory, which postulates that individual susceptibilities moderate external influences for better and for worse. To clarify the mechanism of adolescents' differential adjustments, this article investigates the role of sensory-processing sensitivity using the Japanese version of Highly Sensitive Child Scale for Adolescence (J-HSCS) and tests whether the diathesis-stress model or the differential susceptibility model best describes students' socioemotional adjustment across their high school transition. The current article used the two-wave data collected from Japanese adolescents aged from 14 to 15 years (n = 412, 50% girls). In Study 1, we investigated the replicability of psychometric properties of J-HSCS. The results supported previous findings, indicating its validity for the bifactor model. In Study 2, we utilized confirmatory competitive model testing, which maximizes statistical power by parameterizing the crossover point to allow a direct comparison of alternative models. The results indicate that neither the diathesis-stress nor the differential susceptibility models fitted the data. Rather, a strong vantage sensitivity model was revealed, suggesting that highly susceptible adolescents disproportionately benefitted from a positive school transition over their counterparts. This finding signified the role of adolescents' sensitivity to environmental influences and the importance of considering its moderation under Person × Environment interactions. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Environmental Sensitivity, which explains individual differences in the tendency to respond more to both positive and negative environmental influences, can be measured by the self-reported Highly Sensitive Person scale. This paper introduced psychometric properties of a brief Japanese version of a 10-item measure of sensitivity (HSP-J10) developed by four studies involving 2,388 adults. The results showed that (1) the newly created HSP-J10 supported the bifactor structure (i.e., Ease of Excitation, Low Sensory Threshold, Esthetic Sensitivity, plus General Sensitivity factor), (2) the HSP-J10 correlated with but discriminated against other personality traits and affects, (3) it had high temporal stability, and (4) participants who scored higher on the HSP-J10 showed significant increases in positive emotion from before watching a video with positive content to after, while those who scored low showed no significant change in positive emotion. It demonstrated the new scale’s good psychometric properties in that it moderated outcomes as theoretically expected when the environment was experimentally manipulated. The four studies suggested that the newly created HSP-J10 might adequately measure individual differences in adults’ Environmental Sensitivity.

Background: Sensory processing sensitivity is a personality or temperamental trait defined as individual differences in the tendency to perceive and process both positive and negative stimuli and experiences. Studies have shown that high sensitivity is correlated with psychosocial health, including depression and anxiety. However, its relationship with physical health has not been clarified. To fill this gap, using a large sample size with sufficient statistical power, an adult sample not including university students, and a range of covariates, this study examined the association between gastrointestinal symptoms as an indicator of physical health and sensory processing sensitivity. Methods: In this cross-sectional study, the participants were 863 Japanese adults (female = 450; male = 413; M_age = 30.4 years; SD = 4.9) who completed a web-based questionnaire. We statistically controlled for sociodemographic characteristics and examined whether sensory processing sensitivity is correlated with gastrointestinal symptoms. Results: The results showed that highly sensitive individuals were more likely to experience a wide range of gastrointestinal symptoms in the past week, including reflux symptoms, abdominal pain, indigestion symptoms, diarrhea symptoms, and constipation symptoms, even when statistically controlling for the participants’ sociodemographic characteristics. Conclusions: Our findings suggest that high sensory processing sensitivity is associated with physical health. Some of the potential causes of this are also discussed.

The present study aims to develop and examine the reliability, internal validity, and criterion validity of the Life Skills Scale for Adolescents and Adults (LSSAA) that would enable measurement of the level of life skills in Japanese adolescents and adults. In study 1, 238 university students completed a 41-item questionnaire for the LSSAA based on a previous study (Kase et al., 2016). Exploratory factor analysis was divided into four sub-scales: decision-making (8 items), interpersonal relationships (5 items), effective communication (5 items), and coping with emotion (3 items). In study 2, the reliability, content validity, and criterion validity of the LSSAA were examined by administering the questionnaire to 500 Japanese adolescents and adults. Confirmatory factor analysis and correlation analysis showed that the LSSAA had high reliability and validity. Additionally, it was confirmed that the LSSAA was effective for measuring the life skills needed for a satisfactory social life for a wide range (based on sex and/or age) of Japanese adolescents and adults.