# Cultural Self-Construal and Sustainable Mental Health in Japan: The Role of Subjective, Objective, and Autonomous Selves

## TL;DR

This study shows that in Japan, mental health and sleep problems are linked to how people culturally view themselves, suggesting public health strategies should focus on social and cultural factors.

## Contribution

The study identifies culturally specific self-construal patterns as population-level risk and protective factors for mental health in Japan.

## Key findings

- Objective Self, which focuses on others' evaluations, is linked to higher distress and sleep difficulties.
- Subjective and Autonomous Selves, which emphasize personal goals and values, are associated with better well-being.
- Culturally grounded self-regulation patterns can inform population-level mental health promotion strategies.

## Abstract

Public health relevance—How does this work relate to a public health issue?
Psychological distress and sleep problems are common public health concerns in Japan and affect large numbers of people’s daily life, work, and education, with implications for everyday functioning and service needs. This study shows that these problems are linked to everyday, culturally shared ways of thinking about the self (self-construal), rather than being only individual or clinical issues.In particular, a socially reinforced tendency to view oneself through others’ evaluations (Objective Self; focus on others’ evaluation) is associated with higher levels of distress and sleep difficulties, while more internally guided ways of regulating the self (Subjective Self; acting from personal goals, and Autonomous Self; value-based self-regulation) are linked to better well-being.

Psychological distress and sleep problems are common public health concerns in Japan and affect large numbers of people’s daily life, work, and education, with implications for everyday functioning and service needs. This study shows that these problems are linked to everyday, culturally shared ways of thinking about the self (self-construal), rather than being only individual or clinical issues.

In particular, a socially reinforced tendency to view oneself through others’ evaluations (Objective Self; focus on others’ evaluation) is associated with higher levels of distress and sleep difficulties, while more internally guided ways of regulating the self (Subjective Self; acting from personal goals, and Autonomous Self; value-based self-regulation) are linked to better well-being.

Public health significance—Why is this work of significance to public health?
This study is significant for public health because it identifies a culturally common and socially reinforced pattern (Objective Self) that is linked to higher levels of psychological distress and sleep problems. Because this pattern is widespread rather than limited to a small clinical group, its negative effects can accumulate at the population level.At the same time, the findings highlight culturally relevant protective patterns (Subjective Self and Autonomous Self) that are associated with better well-being. These patterns represent potential targets for mental health promotion and prevention strategies aimed at strengthening resilience across the population.

This study is significant for public health because it identifies a culturally common and socially reinforced pattern (Objective Self) that is linked to higher levels of psychological distress and sleep problems. Because this pattern is widespread rather than limited to a small clinical group, its negative effects can accumulate at the population level.

At the same time, the findings highlight culturally relevant protective patterns (Subjective Self and Autonomous Self) that are associated with better well-being. These patterns represent potential targets for mental health promotion and prevention strategies aimed at strengthening resilience across the population.

Public health implications—What are the key implications or messages for practitioners, policy makers and/or researchers in the field of public health?
From a public health perspective, the findings suggest that improving mental health in Japan requires preventive approaches that address socially reinforced patterns of stress and emotional regulation, rather than relying only on individual clinical treatment.Population-based strategies—such as school, workplace, and community programs—can focus on reducing excessive social-evaluative pressure and supporting more internally guided coping and self-regulation. Such culturally sensitive approaches may help promote sustainable mental health across diverse social groups in contemporary Japan and support population-level mental health promotion policies.

From a public health perspective, the findings suggest that improving mental health in Japan requires preventive approaches that address socially reinforced patterns of stress and emotional regulation, rather than relying only on individual clinical treatment.

Population-based strategies—such as school, workplace, and community programs—can focus on reducing excessive social-evaluative pressure and supporting more internally guided coping and self-regulation. Such culturally sensitive approaches may help promote sustainable mental health across diverse social groups in contemporary Japan and support population-level mental health promotion policies.

Maintaining sustainable mental health is an increasing societal challenge in Japan, where psychological distress and sleep problems have become major public health concerns. This study examined how three culturally grounded dimensions of self-construal—Subjective Self (SS), Objective Self (OS), and Autonomous Self (AS)—relate to both positive and negative indicators of psychological adjustment among Japanese adults. This study aimed to examine whether internally guided forms of self-regulation (SS and AS) function as psychological resources, whereas externally guided self-regulation (OS) operates as a potential vulnerability factor in a culturally tight social context. By simultaneously examining multiple indicators of adjustment, this research clarifies how culturally shared self-regulatory patterns are linked to distress and sleep difficulties that affect large segments of the population. From a public health perspective, the findings highlight socially reinforced risk and protective patterns that can inform population-level prevention and mental health promotion in settings such as schools, workplaces, and communities, rather than relying solely on individual clinical intervention. These results underscore the importance of integrating cultural psychology into public health frameworks aimed at promoting sustainable mental health in contemporary and increasingly diverse social environments.