国際誌論文データベース

Ogihara, Y. (荻原祐二) (2025).
Uncommon names are increasing globally: A review of empirical evidence on naming trends.
一般的でない名前が世界的に増加している：名づけの傾向に関する実証研究の概観
Humanities and Social Sciences Communications, 12, 1826.
https://doi.org/10.1057/s41599-025-06156-1

Previous research has shown that uncommon first names are increasing in some nations. However, these findings have been reported separately by nation, making it unclear whether the phenomenon is observed more globally or more locally in some limited nations. Therefore, this article briefly reviews empirical studies that examined temporal changes in the frequency of (un)common names. In addition, I summarize the information of research on (un)common names and naming behaviors for uniqueness. Accumulated evidence has demonstrated that uncommon names increased over time in many nations: Germany, the U.S., the U.K., France, Japan, China, and Indonesia. All the nations that were examined have shown an increase in uncommon names. Thus, the phenomenon is observed more generally, not locally in some limited nations. Moreover, this trend has been found in diverse cultural zones: European, American, East Asian, and Southeast Asian cultures. Therefore, giving uncommon names is a more global trend.

先行研究は、いくつかの国で一般的でない名前が増加していることを示してきた。しかし、それらの知見は、国ごとに個別に報告されていることが多く、一般的でない名前の増加という現象が世界的に共通して見られるのか、一部の限られた国でのみ見られるのか明らかでなかった。そこで本論文は、一般的でない名前の頻度の経時的変化を実証的に検討している研究を概観した。さらに、個性を追求するための一般的でない名前やその名づけに関する情報もまとめた。一般的でない名前は、検討されたすべての国、ドイツ・アメリカ・イギリス・フランス・日本・中国・インドネシアで経時的に増加していることが一貫して示された。したがって、この現象は世界的に共通して見られるものであり、一部の限られた国でのみ見られるものではない。さらにこの傾向は、ヨーロッパ、アメリカ、アジアという多様な文化圏で共通して見られた。よって、一般的でない名前の増加は、より世界的な傾向であると言える。

プレスリリース：https://www.aoyama.ac.jp/faculty115/2025/news_20251202_01

概要の紹介ポスト（X）：https://x.com/Yu_Ogihara/status/1993590106805223677

Ito, T. (伊藤健彦), & Takagishi, H. (高岸治人) (2025).
Associations between individual- and group-level relational mobility and Big Five personality in Japan: A multilevel study of prefectural capitals.
日本における個人レベル・集団レベルの関係流動性とビッグファイブ性格特性の関連：都道府県庁所在地を対象としたマルチレベル分析
Journal of Personality, 1–9.
https://doi.org/10.1111/jopy.70033

This study examined the associations between individual- and group-level relational mobility and the Big Five personality traits, along with demographic variables and macro-level variables, targeting 5048 people in all 47 Japanese prefectural capitals. The study controlled for macro-level variables such as total population, population change rate, population density per 1 km2 of habitable area, number of incoming residents, and number of outgoing residents in each prefectural capital, which previous studies have not examined. Multilevel regression analysis revealed that extraversion was positively associated with both individual- and group-level relational mobility. The present study showed that specific features of the social environment (relational mobility) are positively associated with specific aspects of Big Five personality traits.

日本の47都道府県庁所在地に住む20〜30代の5,048名のデータを用いて、「人間関係を自由に選べる社会かどうか（関係流動性）」と「性格（ビッグファイブ）」の関係を分析しました。

Shimizu, Y.(志水勇之進), Ogawa, K.(小川一美), Kimura, M.(木村昌紀), Fujiwara, K.(藤原 健), & Watanabe, N. (2025).
Introducing the Facial Expressions of Emotion Decoding Test with Various Intensity (FEET-I): Using the AIST Facial Expression Database 2017.
多様な強度を用いた表情解読テスト (FEET-I) の開発─AIST顔表情データベース2017を用いて─
Japanese Psychological Research.
https://doi.org/10.1111/jpr.70009

This article introduces the Facial Expressions of Emotion decoding Test with various Intensity (FEET-I)—using the AIST Facial Expression Database 2017. Study 1 aimed to develop the FEET-I, and the facial stimuli were created by manipulating emotion intensities of Japanese stimuli from the AIST Facial Expression Database 2017 (Fujimura & Umemura, 2018). In Experiment 1a, 114 facial stimuli were selected based on the percentage of correct responses. In Experiment 1b, we applied Item Response Theory (IRT) to examine each item’s difficulty and discrimination and selected 78 items with high internal consistency (ω = .85). Study 2 aimed to examine the convergent validity of the FEET-I. As a result, the score of the FEET-I showed a significant positive correlation with that of the Short version of the Geneva Emotion Recognition Test (GERT-S; Schlegel & Scherer, 2015). Additionally, a small but significant female advantage was observed, consistent with previous findings. The final FEET-I includes 78 stimuli and measures decoding accuracy for Japanese facial expressions of emotion. Future directions regarding the applicability of the FEET-I were discussed.

・強度に変化をつけた表情刺激を用いた，日本人用の感情解読テスト (FEET-I) の作成を試みた。
・AIST 顔表情データベース2017 の日本人刺激を用い，モーフィングによって感情表出の強度を操作した。
・項目反応理論 (IRT) を適用した分析を行い，各刺激の困難度と識別力に基づいて78刺激を選定した結果，高い内的一貫性が確認された。
・また，既存の感情解読テスト (GERT-S) との間に有意な正の相関が確認されたことから，FEET-Iの収束的妥当性が示された。
・以上より，FEET-Iは，日本人における，表情による感情解読の正確さを測定するテストとして有用であると判断された。

Suganuma, H. (菅沼 秀蔵), Katahira, K., Ohtsuki, H., & Kameda, T. (2025).
How social learning enhances—or undermines—efficiency and flexibility in collective decision-making under uncertainty.
社会的学習が不確実性下の集団意思決定の効率性と柔軟性をどのように向上，あるいは劣化させるか
Proceedings of the National Academy of Sciences of the United States of America, 122(48). https://doi.org/10.1073/pnas.2516827122

Balancing efficiency and flexibility in collective decision-making is increasingly critical in modern societies characterized by rapid sociocultural and technological change. Recent research in cognitive neuroscience has proposed two contrasting computational algorithms for social learning: value shaping (VS) and decision biasing (DB). VS posits that others’ choices serve as “pseudo-rewards” that directly shape an observer’s valuations, leading them to prefer popular options even in the absence of outcome feedback. In contrast, DB confines the influence of social information to behavior—observers may imitate popular actions, but they update their valuations solely through personal experience. Although both algorithms facilitate individual adaptation under uncertainty, their interactive dynamics and group-level consequences remain largely unexplored. To address this gap, we developed computational models of VS and DB within a reinforcement learning framework and conducted agent-based simulations to examine collective performance in uncertain and dynamically changing environments. The results reveal a trade-off: VS enables rapid convergence and high efficiency in stable contexts, whereas DB promotes greater adaptability under environmental volatility. These differences are amplified in larger groups, particularly under strong majority influence. Importantly, evolutionary analyses indicate that both learning types can coexist stably, allowing their complementary strengths to enhance group performance. Together, our findings provide a computational and evolutionary account of how social learning can both enhance and impair collective intelligence—and suggest design principles for fostering resilient collective decision systems in human and AI societies facing rapid change.

https://www.atpress.ne.jp/news/558608

Miura, A. (三浦 麻子) & Yamagata, M. (2025).
Dataset of social psychology in Japan during COVID-19: a 30-wave panel (January 2020–March 2024).
日本におけるコロナ禍の社会心理：30波パネルデータセット（2020.1-2024.3）
Data in Brief, 112279.
https://doi.org/10.1016/j.dib.2025.112279

This data article describes a 30-wave longitudinal online survey of adults in Japan that tracked psychological and social responses to COVID-19 from January 2020 to March 2024. Wave 1 recruited 1,248 participants via a nationwide crowdsourcing platform; invitations to wave t+1 were sent only to those who responded at wave t. To mitigate attrition, an additional cohort of 600 participants was added at Wave 13 under the same procedures. Data collection moved from 2-week to 1-month intervals early on to a regular bimonthly schedule from May 2020. Surveys were self-administered in Japanese. Repeated measures cover interest in COVID-19, risk perception (dread, unknown), infection-prevention behaviors, attitudes toward public-health policies, intergroup attitudes, perceived social disruption, and psychological distress, with time-specific modules added as policy and epidemiological contexts evolved; wave-by-wave availability and exact wording are documented in the codebook and questionnaires (the codebook provides English translations of all items). The dataset is intended for reuse in within-person panel analyses (e.g., fixed-effects, growth-curve, cross-lagged), event-aligned designs around policy milestones, and heterogeneity analyses by age, region, and cohort (baseline vs top-up), and supports replication and pedagogical applications.

日本の成人を対象としたコロナ禍30波オンラインパネル調査（2020年1月〜2024年3月）のデータセットを論文として公開しました。再利用可能なデータと英訳付きコードブックです。

Matsuo, A. (松尾 朗子) & Ueno, T. (2025).
Moral Stereotyping: A Surface-Based Cue Promotes the Use of Generalized Morality at an Early Stage of Human Interactions.
他者との交流初期において、道徳ステレオタイプを利用して他人の道徳性を推測する
Personality and Social Psychology Bulletin (online first)
https://doi.org/10.1177/01461672251384355

Generalized morality refers to the use of prior knowledge of others’ morality to infer unknown aspects of morality, which is a crucial heuristic for obtaining cooperative partners in a large society. This research investigated how information is used for generalized morality. It was predicted that group-level generalized morality, or moral stereotyping, would come first when the information is limited, thereby people rely on a surface cue. As information increases, they come to use individual-level generalized morality, which is shown by Jackson et al. Following Jackson et al., the current research employed an agent-based modeling (Study 1) and human study (Study 2). Study 1 found that participants used moral stereotyping first in their interactions when the visual cue-morality association was salient. Study 2 also showed the same trend. This research worked as a replication of the previous study and as an important extension to understanding how moral cognition develops.

汎化された道徳（generalized morality）とは、相手の道徳的性質について、すでに知っていることをもとにまだ知らない部分を推測することです。社会的ネットワークの大きい社会の中で信頼できる協力相手を見つけるために役立つ考え方であるとJackson et al. (2023)が主張し、実験によって確かめられました。
本研究ではその先行研究を拡張し、人がその汎化された道徳をどのように使うのかを調べました。情報が少ないとき、人はまず視覚的情報を手がかりに集団全体のイメージ（ステレオタイプ）を形成し相手を判断しがちです（例えば、特定のファッションと道徳性を関連付ける）。しかし情報が増えてくると、だんだん相手個人の特徴に基づいて判断するようになるだろうと我々は予測しました。
この仮説を確かめるために、コンピュータ上でシミュレーションを行う研究（研究1）と、人を対象にした実験（研究2）が行われました。その結果、研究1でも研究2でも、他者の道徳性（協力してくれるかどうか）を推測する際、集団成員との交流の初期には視覚的情報を手がかりに道徳性を判断し、情報が増えると個人ごとの判断に移っていく、という流れが確認されました。
この研究は先行研究の知見を確かめるだけでなく、人の道徳的な考え方がどう成り立ちどう変わっていくのかを理解する上で大事な示唆を与えてくれます。

Ikeda, K. (池田謙一), & Akaeda, N. (赤枝尚樹). (2025).
Perceived societal risk and well-being inequality: Exploring political-psychological correlates of subjective life satisfaction.
社会的リスク認知と幸福感格差：主観的生活満足度をめぐる政治心理的要因の探求
Applied Research in Quality of Life.
https://doi.org/10.1007/s11482-025-10509-y

This study examines the political-psychological dynamics surrounding subjective well-being (SWB), using data from the sixth and seventh waves of the World Values Survey. We focus on a factor related to individuals’ perceived sense of control over society: perceived national and societal risk. In addition, we assess how this perception relates to aggregate patterns of SWB distribution–specifically, upward and downward comparative disparities–rather than the overall extent of inequality. Our findings indicate that higher perceived risks are consistently associated with lower SWB. To test the robustness of these associations, we also conducted an instrumental variable (IV) estimation to address potential endogeneity in perceived national and societal risk. While the results suggest a possible directional influence from risk perception to SWB, limitations in the validity of instruments and the stability of estimates warrant cautious interpretation. Nonetheless, the association remains robust even after accounting for macro-level indicators, such as gross domestic product per capita, income inequality, and measures of democratic governance (Freedom House score). Furthermore, the interactive effects of upward and downward comparative disparities with perceived societal risk become more pronounced in high-risk contexts, amplifying the negative association in the case of upward disparities (Iu) and enhancing the positive association in the case of downward disparities (Id). While causality cannot be definitively established, the findings clarify the structural interplay between perceived societal risk, the distributional shape of well-being, and individual-level SWB. This provides a conceptual framework for understanding how societal risk perceptions and well-being disparities jointly shape SWB across different contexts.

　本研究は、主観的ウェルビーイング(subjective well-being; SWB)をめぐる政治心理学的ダイナミクスを検討するために、World Values Survey（世界価値観調査）第6波および第7波のデータを用いて分析を行ったものである。特に個人が社会に対して抱く統制感(の欠如)と関連する要因として、「国家的・社会的リスクの認知(perceived national and societal risk)」に焦点を当て、さらに単に幸福感の不平等の大きさを扱うのではなく、SWBの分布構造、すなわち上方比較および下方比較に基づく格差パターンとの関連を検討した。
　分析手法は、各国二度の測定に基づく国別効果モデルによる順序ロジット分析を主とした。この分析の結果、国家的・社会的リスクの認知が高いほど、SWBが一貫して低い傾向にあることが明らかとなった。これらの関連の頑健性を確認するため、リスク認知の内生性を考慮した操作変数法(instrumental variable estimation; IV推定)も実施した。その結果、リスク認知からSWBへの一方向的影響の可能性が示唆されたが、操作変数の妥当性および推定の安定性に限界があるため、解釈には慎重を要する。
　それにもかかわらず、リスク認知とSWBとの負の関連は、1人当たり国内総生産(GDP)、所得格差、民主的統治の水準(Freedom Houseスコア)といったマクロ指標を統制した後も一貫して確認された。さらに、上方比較格差(Iu)および下方比較格差(Id)と社会的リスク認知との交互作用効果は、高リスク文脈において顕著となり、前者では負の関連が強化され、後者では正の関連が増幅される傾向が見られた。
　より具体的には、国や社会レベルでのリスク認知が高まると、上方比較的な不平等が大きい社会では、主観的ウェルビーイング(SWB)の低下がより顕著になる。個々の市民は、自らが属する社会におけるSWBの分布を選択することはできない。この観点から見ると、上方比較的不平等が大きい社会が不安定化し、リスクが高まるとき、市民はウェルビーイングの低下によってもたらされる不幸を「選べない」状況に置かれるといえる。一方で、下方比較的な不平等という観点から幸福格差を検討すると、幸福感の「厚い中間層」の存在(Idが高い社会)が国家的・社会的リスクが高い状況下においても「最大多数の最大幸福(the greatest happiness for the greatest number)」という理念の保持を可能にする構造を作り出していることを示唆している。
　因果関係を最終的に確定することはできないものの、本研究の結果は、社会的リスク認知、ウェルビーイングの分布構造(格差)、個人レベルのSWBとの間に存在する構造的な相互関係を明らかにするものである。これにより、社会的リスク認知と幸福格差がどのように結びつき、文脈ごとにSWBを形成していくのかを理解するための概念的枠組みを提示した。

Nozaki, Y.（野崎 優樹） (2025). 
Sharing motives shape interface preferences for social sharing of Emotion with conversational AI.
対話型AIに感情の社会的共有を行う際の動機がインターフェースの選好に及ぼす影響
Computers in Human Behavior: Artificial Humans, Article 100229.
https://doi.org/10.1016/j.chbah.2025.100229

Social sharing of emotion with conversational AI is a growing phenomenon. While social presence theory suggests richer, more human-like interfaces enhance social connection, how interface design influences users’ willingness to share emotions with conversational AI depending on their motives remains underexplored. Using an experimental vignette methodology, this study examines the influence of interface type (text vs. voice; without vs. with visual presence) and user motives (seeking cognitive support, social-affective support, or capitalization) on the willingness to share emotions with conversational AI, drawing a comparison with human partners. Based on data from 195 Japanese university students, the results revealed distinct user preferences. For the cognitive and social-affective support motives, users preferred a text-based interface, especially without visual presence (i.e., no avatar). Conversely, for the capitalization motive, an interface featuring visual presence was preferred. Moreover, perceived warmth was positively related to the willingness to share for social-affective support and capitalization motives, whereas perceived competence was positively related to it for cognitive and social-affective support motives. These patterns differed from those found in mediated communication with human partners. These findings refine social presence theory by suggesting that richer, more human-like interfaces are not always superior and underscore the importance of designing conversational AI tailored to user motives from a human-centered perspective.

Yang, F.（楊帆）, & Oshio, A（小塩真司）. (2025).
Mindfulness mediates the relationship between attachment style and general self-efficacy: Preliminary evidence from cross-sectional and cross-lagged studies.
マインドフルネスは愛着スタイルと一般的自己効力感の関連を媒介する：横断研究と交差遅延研究からの証拠
Journal of Individual Differences.
https://doi.org/10.1027/1614-0001/a000444

Attachment style is related to general self-efficacy. However, the underpinning mechanisms regarding this association remain unclear. The way people treat their own experiences is vital to general self-efficacy. Mindfulness is a key feature of attachment security, and mindful individuals could utilize positive experiences efficiently and prevent negative ones from impacting their self-efficacy. Thus, the current study investigated the potential mediating role of mindfulness in the association between attachment style and general self-efficacy. Study 1 used a cross-sectional design with 709 participants living in Tokyo, Japan. The results of Study 1 indicated that mindfulness was negatively associated with attachment avoidance and anxiety and positively associated with general self-efficacy. Attachment avoidance and anxiety were negatively related to general self-efficacy, and mindfulness mediated this relationship. Study 2 adopted a cross-lagged model to examine the directionality of these variables. Data from 408 Japanese participants showed that, at a 3-month interval, attachment anxiety negatively predicted mindfulness and general self-efficacy, and mindfulness negatively predicted general self-efficacy. Attachment avoidance positively predicted mindfulness, and mindfulness negatively predicted attachment avoidance. These findings support that evaluative attitude and the amplified negative emotions of attachment anxiety may constitute an unstable inner environment, which is likely to hamper mindfulness and general self-efficacy.

Ishii, T.（石井 辰典）, Kobayashi, M., & Watanabe, K. (2025).
Children’s religious belief in Japan: Relationships with empathy and parental belief.
日本の児童の宗教的信念：共感的関心と養育者の宗教的信念の役割
Psychology of Religion and Spirituality.
https://doi.org/10.1037/rel0000579

This preregistered study investigated whether children’s religious beliefs (RBs) are predicted by empathic concerns and parents’ religious beliefs. Participants included 166 Japanese children aged 6–12 years and their parents who visited a national museum. Participants were asked to complete a questionnaire that included measures of their religious beliefs and empathic concerns. Children’s religious beliefs were positively and independently explained by their empathic concern and parents’ religious beliefs even after controlling for parents’ empathic concern and demographic variables (age and gender). Bootstrapping analysis revealed that a positive association of this magnitude between children’s and parents’ beliefs rarely occurred among random pairs, indicating that factors within the familial context were the source of this association. These results support the two-factor hypothesis and highlight the importance of social cognitive abilities and vertical transmission in developing religious beliefs.

＊本研究の実施に当たり、日本科学未来館の皆様、早稲田大学理工学術院・渡邊克巳研究室の皆様に多大なサポートを頂きました。記して感謝申し上げます。
＊日本語での解説はこちら：https://x.gd/ULINS