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A research team led by associate professor Yasuo Murayama of Kanazawa University has identified longitudinal associations among loneliness, depressive symptoms and social behaviors in children affected by the 2024 Noto Peninsula earthquake.

The study followed 634 students in grades 3 through 9 (303 boys and 331 girls) in Wajima City, Ishikawa Prefecture, which was severely affected by the earthquake. Surveys were conducted in July and October 2024 and February 2025. Using a cross-lagged panel model, the researchers examined the longitudinal relationships among loneliness, depressive symptoms, aggressive behavior and prosocial behavior.

The findings, published in Child Psychiatry & Human Development, revealed that higher levels of depressive symptoms and aggressive behavior were associated with greater loneliness at subsequent time points. Bidirectional associations were also observed between loneliness and depressive symptoms, with depressive symptoms showing a stronger and more consistent association with later loneliness than the reverse pathway. Aggressive behavior was also associated with lower subsequent prosocial behavior.

"First and foremost, I feel relieved that our study has been accepted for publication," said Murayama. "But behind these findings are children struggling with mental health difficulties in schools, and teachers who are doing their best to support them while facing difficult questions about how to help. As a psychologist, I hope to translate these findings into meaningful support for children."

The findings highlight the importance of addressing children's emotional, behavioral and interpersonal difficulties together, rather than treating them as separate problems.

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