Intraindividual Fluctuation in Optimism Under Daily Life Circumstances: A Longitudinal Study.

Kanji Shimomura, Kenji Morita, Yuki Nishiguchi, Jeff C Huffman, Rachel A Millstein

Abstract read

In one paragraph

Article in Affective science, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it

0cells of the map it votes in

3citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

State Optimism as a State-Dependent Prior About Rewarding Outcomes.Computational brain & behavior · 2026
Article
The Effect of Reward Magnitude on Different Types of Exploration in Human Reinforcement Learning.Computational brain & behavior · 2025
Article
Assessing state optimism in cardiac patients: A comparison of two validated measures in three prospective cohorts.General hospital psychiatry
Article

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Kanji ShimomuraPhysical and Health Education, Graduate School of Education, The University of Tokyo, Tokyo, Japan.ORCID 0000-0003-4370-3710

Kenji MoritaPhysical and Health Education, Graduate School of Education, The University of Tokyo, Tokyo, Japan.

Yuki NishiguchiFaculty of Education, Chiba University, Chiba, Japan.

Jeff C HuffmanDepartment of Psychiatry, Massachusetts General Hospital, Boston, MA USA.

Rachel A MillsteinDepartment of Psychiatry, Massachusetts General Hospital, Boston, MA USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Optimism is typically conceptualized as a relatively static tendency regarding positive expectations about one's future. However, recent studies suggest that optimism may meaningfully fluctuate within individuals over time. To date, little is known about the characteristics of such state optimism and potential cultural difference in state optimism. Accordingly, we developed a Japanese version of the State Optimism Measure (J-SOM) and examined its validity and the nature of intraindividual state optimism fluctuations; we also examined relationships between the J-SOM and other measures of mental health, including trait optimism. We conducted two online longitudinal surveys with different time intervals (weekly, Supplementary Information: The online version contains supplementary material available at 10.1007/s42761-023-00224-y.

Indexed as

Intraindividual fluctuationLongitudinal surveyMoodState optimismTrait optimism

Identifiers

PMID39050035

DOI10.1007/s42761-023-00224-y

PMCPMC11264638

What OpenQuestion holds

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LicenceCC BY

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Registered trials

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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.