SynthesisFrontiers in psychology2026
Increasing loneliness in Japan, 1983-2023: a cross-temporal meta-analysis.
Synthesis in Frontiers in psychology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Initial Psychometric Evaluation of the Social Safeness and Pleasure Scale Japanese Version.Behavioral sciences (Basel, Switzerland) · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Loneliness and social isolation have become crucial in Japan, but research on how loneliness has changed over time is lacking. This study conducted a cross-temporal meta-analysis to address this gap. Studies were identified from PubMed, Web of Science, J-Stage, and CiNii; exclusion criteria were missing means, absence of the University of California, Los Angeles (UCLA) Loneliness Scale, unclear year of study, duplicate data, and lack of sample size or clear scale use. We identified an overall increase in loneliness between 1983 and 2023, particularly among adolescents. Regression analysis indicated that developmental stage, number of scale items, and type of Japanese translation of the UCLA Loneliness Scale were related to loneliness trends. While male participants consistently reported higher loneliness, results suggested a more significant increase among female participants. Some social indicators were associated with changes in loneliness. Despite various contributing factors, the underlying causes remain unclear, highlighting the need for further research.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.