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

The study examined three distinct dimensions of self-construal in a Japanese adult sample as predictors of mental health outcomes.

• The three dimensions examined were Subjective Self (SS), Objective Self (OS), and Autonomous Self (AS).
• The study was conducted among Japanese adults in a culturally 'tight' social context.
• Both positive and negative indicators of psychological adjustment were examined simultaneously.
• Outcomes included psychological distress and sleep problems, identified as major public health concerns in Japan.

Internally guided forms of self-regulation (Subjective Self and Autonomous Self) functioned as psychological resources for mental health.

• Both SS and AS were hypothesized and found to operate as protective factors in psychological adjustment.
• These internally guided self-regulatory patterns were associated with positive indicators of psychological adjustment.
• The findings distinguish internally guided from externally guided self-regulation in their mental health implications.
• Results were interpreted within the framework of cultural psychology applied to public health.

Externally guided self-regulation (Objective Self) operated as a potential vulnerability factor for psychological adjustment.

• OS was associated with negative indicators of psychological adjustment including distress and sleep difficulties.
• This vulnerability pattern was understood within the context of Japan's culturally tight social environment.
• The OS dimension reflects externally guided self-regulation, oriented toward how one appears to others.
• This finding suggests socially reinforced risk patterns operating at a population level.

The study identified culturally shared self-regulatory patterns linked to psychological distress and sleep difficulties affecting large segments of the Japanese population.

• Psychological distress and sleep problems were characterized as major public health concerns in Japan.
• The findings highlight both risk and protective patterns that are socially reinforced rather than solely individually determined.
• Results were framed as relevant for population-level prevention in schools, workplaces, and communities.
• The approach emphasized cultural psychology as informing public health frameworks beyond individual clinical intervention.

The findings underscore the importance of integrating cultural psychology into public health frameworks for promoting sustainable mental health.

• The authors recommend population-level prevention and mental health promotion rather than relying solely on individual clinical intervention.
• Application settings identified include schools, workplaces, and communities.
• The framework is described as relevant to 'contemporary and increasingly diverse social environments.'
• The study situates culturally grounded self-construal as a meaningful lever for sustainable mental health policy in Japan.