Updated on 2025/03/13

写真a

 
YAMAMOTO, Akitomo
 
Affiliation
Affiliated organization, Center for Data Science
Job title
Assistant Professor(non-tenure-track)
Homepage URL
https://sites.google.com/view/akitomoyamamoto/

Research Experience

  • 2024.04
    -
    Now

    Waseda University   Center for Data Science   Assistant Professor

  • 2021.04
    -
    2024.03

    Sophia University   Faculty of Human Sciences Department of Psychology   Researcher

  • 2024.04
    -
    Now

    Toyo University   Faculty of Sociology

  • 2024.04
    -
    Now

    Senshu University   School of Human Sciences

  • 2020.04
    -
    Now

    IdeaLab   Researcher

  • 2020.10
    -
    2024.03

    Bunkyo University   Faculty of Health and Nutrition

  • 2020.10
    -
    2024.03

    Bunkyo University   Faculty of Health and Nutrition

  • 2017.04
    -
    2020.03

    Sophia University   Faculty of Human Sciences Department of Psychology

▼display all

Education Background

  • 2017.04
    -
    2021.03

    Sophia University   Graduate School of Human Sciences   Doctoral Program in Psychology  

  • 2015.04
    -
    2017.03

    Sophia University   Graduate School of Human Sciences   Master's Program in Psychology  

  • 2011.04
    -
    2015.03

    Sophia University   Faculty of Human Sciences   Department of Psychology  

Committee Memberships

  • 2024
    -
    Now

    日本感情心理学会  理事長推薦理事（若手の会（仮称）担当理事）

  • 2021.07
    -
    Now

    日本感情心理学会  選挙管理委員会委員

  • 2023
    -
    　

    日本社会心理学会  第64回大会準備委員会

Professional Memberships

  • 　
    　
    　

    The Japanese Group Dynamics Association

  • 　
    　
    　

    The Japanese Society of Social Psychology

  • 　
    　
    　

    Japan Society for Research on Emotions

  • 　
    　
    　

    The Japanese Psychological Association

Research Areas

  • Social psychology

Research Interests

  • gratitude

  • indebtedness

  • social emotion

  • morality

Awards

  • 第 30 回大会「大会発表賞（グッド・プレゼンテーション賞）」

    2022.06   Japan Society for Research on Emotions  

    Winner： Akitomo Yamamoto

  • 「精励発表賞」

    2019.06   Japan Society for Research on Emotions  

    Winner： Akitomo Yamamoto

  • 第 26 回大会「大会発表賞（グッド・プレゼンテーション賞）」

    2018.11   Japan Society for Research on Emotions  

    Winner： Akitomo Yamamoto, Masataka Higuchi

Media Coverage

  • ABEMA Prime「迫るXmas頭悩マス プレゼント論争 サプライズはエゴ?手作りの思いは重い?」

    Internet

    ABEMA   ABEMA Prime  

    https://abe.ma/3Z66n8D（編集版Youtube：https://www.youtube.com/watch?v=PLxhkC9KQLg）  

    2024.11

  • サプライズで感謝の度合いは高まらない？プレゼントを贈る際のポイントとは【上智大学・山本特別研究員】

    Internet

    Wellulu  

    https://wellulu.com/gratitude/10800/  

    2023.11

  • 「突然の贈り物」で感謝の度合いは高まらない!?「サプライズ」の影響を研究者が検証…どんな方法がいいのか聞いた

    Internet

    FNNプライムオンライン  

    https://www.fnn.jp/articles/-/590100  

    2023.09

  • Sophia researchers find that not expecting a gift or counterfactually imagining not receiving a gift does not really improve a beneficiary’s level of gratitude on receiving a gift

    Internet

    Author： Other  

    Sophia University  

    https://www.sophia.ac.jp/jpn/news/PR/2018/1207_award.html  

    2023.09

  • 総合人間科学部心理学科特別研究員 山本 晶友さんが日本感情心理学会で大会発表賞を受賞

    Internet

    上智大学  

    https://www.sophia.ac.jp/jpn/news/PR/220623_award.html  

    2022.06

  • 総合人間科学研究科心理学専攻博士後期課程2年の山本 晶友さん と 総合人間科学部心理学科の樋口 匡貴教授が日本感情心理学会で大会発表賞を受賞

    Internet

    上智大学  

    https://www.sophia.ac.jp/jpn/news/PR/2018/1207_award.html  

    2018.12

▼display all

 

Papers

  • Grateful Liars Gain Reliance in Reciprocal Relationships: Exploring the Potential Role of Gratitude in Mitigating the Impact of Lying

    Akitomo Yamamoto

    Japanese Psychological Research    2025.02  [Refereed]

    Authorship：Lead author, Corresponding author

    　View Summary

    Abstract

    Despite the general inclination of grateful individuals toward moral behavior, their actions may not always align with morality, such as if they conceal the dishonest behavior of benefactors. In this preregistered study, the author investigated how laypeople evaluate a grateful beneficiary (Person A) who lies to cover up their benefactor's (Person B's) dishonest behavior. Study 1 provided a basic exploration of situations without mentioning incentives for lying, whereas Study 2 examined situations wherein explicit incentives (i.e., shared project responsibilities) were presented. The results of both vignette experiments, each comprising three comparisons with their respective baselines, can be summarized in three points. First, the inclusion of Person A's gratitude context did not significantly increase participants' willingness to forgive them for covering up Person B's negligence at work. Second, participants' willingness to affiliate with Person A remained mostly unchanged compared with various baselines. Third, participants were more likely to expect Person A to reciprocate favors. In conclusion, lies stemming from gratitude foster neither forgiveness nor a desire for affiliation but help the individual gain reliance in reciprocal relationships.

    DOI

    Scopus

  • Four research methods of inducing emotions: A focus on interpersonal gratitude

    Akitomo Yamamoto

    Emotion Studies   9 ( 1 ) 43 - 51  2024.07  [Refereed]  [Invited]

    Authorship：Lead author, Corresponding author

    DOI

  • Do Grateful People Protect Their Benefactors at the Expense of Other People? Implications From Loss‐Framed Welfare Tradeoff Ratios

    Akitomo Yamamoto

    Japanese Psychological Research    2024.06  [Refereed]

    Authorship：Lead author, Corresponding author

    DOI

    Scopus

  • Sensitiveness of gratitude to benefactors’ immorality: Registered conceptual replication on Yu et al. (2022)

    Akitomo Yamamoto, Yuki Misawa, Ren Suzuki, Mai Tomizawa, Ayana Ueda, Chiharu Uesaka, Masataka Higuchi

    JAPANESE JOURNAL OF RESEARCH ON EMOTIONS   31 ( 2 ) 50 - 58  2024.05  [Refereed]

    Authorship：Lead author

    DOI

  • The Effect of Simulating the Absence of Benefits on Gratitude: Prior Expectations and Posterior Counterfactual Thinking

    Akitomo Yamamoto, Masataka Higuchi

    Japanese Psychological Research    2023.07  [Refereed]

    Authorship：Lead author

    DOI

    Scopus

  • Effects of zero-sum belief on gratitude in apologetic form represented by “sumimasen”

    Akitomo Yamamoto, Hitomi Irie, Yurika Oishi, Yu Uesugi, Masataka Higuchi

    JAPANESE JOURNAL OF RESEARCH ON EMOTIONS   30 ( 2 ) 33 - 39  2023.06  [Refereed]

    Authorship：Lead author

    DOI

  • Expectation Regarding Benefit Does Not Determine Gratitude: Implications From an Anchoring Paradigm

    Akitomo Yamamoto, Masataka Higuchi

    Japanese Psychological Research   64 ( 3 ) 269 - 281  2022.07  [Refereed]

    Authorship：Lead author

    DOI

    Scopus

    2
    Citation
    (Scopus)

  • Compassion and gratitude: The function and pitfalls of two emotions that support reciprocal help

    Akitomo Yamamoto, Masataka Higuchi

    Japanese Psychological Review   63 ( 3 ) 242 - 258  2020.02  [Refereed]  [Invited]

    Authorship：Lead author

    DOI

  • The effect of relative amount of benefit received on gratitude: When you compare the benefit you received with what another received

    Akitomo Yamamoto, Masataka Higuchi

    JAPANESE JOURNAL OF RESEARCH ON EMOTIONS   26 ( 3 ) 71 - 77  2019.05  [Refereed]

    Authorship：Lead author

    DOI

  • An Apology With a Tiny Monetary Compensation Is No More Effective Than a Verbal Apology Alone

    Hirotaka Imada, Akitomo Yamamoto, Gen Tsudaka

    Letters on Evolutionary Behavioral Science   14 ( 1 ) 32 - 36  2023.05  [Refereed]

    　View Summary

    How can organizations effectively deliver apologies?  Prior research has indicated that apologies accompanied by significant costs are generally perceived as more sincere than those without any associated costs. However, these studies have not explored the impact of minimal financial compensation when the transgressor can only afford a nominal amount. This issue is particularly relevant to organizational apologies, where it may be challenging for a company to provide a substantial amount of compensation to every affected customer or stakeholder. In this study, we thus examined the effectiveness of a verbal apology combined with a nominal financial compensation in organizational settings. Drawing upon previously documented social and evolutionary psychological findings, our preregistered study tested the hypothesis that individuals perceive verbal apologies with ‘trivial’ compensation as less sincere than verbal apologies without any compensation (i.e., the trivialization effect). Contrary to our expectations, we did not observe the trivialization effect; verbal apologies with a trivial amount of financial compensation were as effective as verbal apologies alone. These findings suggest that a verbal apology accompanied by a minimal financial compensation does not necessarily enhance or detract from the perceived sincerity or effectiveness of the apology.

    DOI

  • Relationship of benign and malicious envy to the appraisal of deservingness in Johnny's fan

    Akitomo Yamamoto, Masataka Higuchi

    The Psychological report of Sophia University   46   77 - 87  2022.02  [Refereed]  [Domestic journal]

    Authorship：Lead author

  • The influence on the gratitude of the presence of benefits to compare with

    Akitomo Yamamoto

       2021.03  [Refereed]

    Authorship：Lead author

  • Does relative amount of received benefit determine gratitude?: Behavioral experiments

    Akitomo Yamamoto, Masataka Higuchi

    The Psychological report of Sophia University   44   1 - 16  2020.03  [Refereed]

    Authorship：Lead author

  • The influence of the belief that body movement determines affective reactions on the facial feedback effect

    Akitomo Yamamoto, Masataka Higuchi

    The Psychological report of Sophia University   43   33 - 39  2019.03  [Refereed]

    Authorship：Lead author

▼display all

Presentations

  • 感謝体験者は恩人のためなら道徳規範や第三者を犠牲にするのか

    山本晶友

    日本心理学会第88回大会 

    Presentation date： 2024.09

    Event date：
    2024.09
    　
    　

Research Projects

  • 感謝体験者が恩人のために他者を犠牲にする現象についての検討

    日本学術振興会  科学研究費助成事業 若手研究

    Project Year :

    2023.04
    -
    2026.03
     

    山本 晶友

  • 感謝体験者による非道徳的行動：恩人の不正を匿う嘘

    日本学術振興会  科学研究費助成事業 研究活動スタート支援

    Project Year :

    2021.08
    -
    2023.03
     

    山本 晶友

    　View Summary

    本研究の目的は，感謝体験者が感謝対象者の不正を匿う嘘をつくかを検討することである。このために，個人参加型の行動実験を令和3年度から実施中であるが，事前の例数設計通りの観測数に至っていないため，まだ結論づけることはできない。この行動実験は，オンライン参加者プールのアカウント登録の告知が完了してから，サンプリングを再開する。一方，事前に計画していた，新入生が在校生に感じる感謝感情についてのフィールド実験は，実験マテリアルや手続きの準備までは完了していたものの，新入生の心理的負担への懸念などを理由に所属機関の倫理委員会による実施承認を得られなかった。そのため代替となる研究や，別の視点を加えての実験を新たに実施することを検討中である。
    また本研究では，感謝対象者の不正を匿う感謝体験者に対する，第三者からの評価が肯定的であるかを検討することも進めている。これについては，実験操作されたシナリオを読んだ上での評定を参加者に求める研究を2件実施済みである。この実験の結果，感謝対象者の不正を匿う感謝体験者に対して「この人物とは互恵関係を構築できそうだ」という肯定的な評価が生じやすくなることが示唆されている。このシナリオ実験の知見は，適度な抽象度を持つために知見の演繹可能範囲が広く，精密な要因操作と統制をした上で因果的な効果を確認できたという点で意義のある知見である。1件目は令和3年10月の学会大会にて発表済みであり，2件目は令和4年5月の学会での発表を登録済みである。また，2件をまとめた上での国際誌への投稿を準備中である。

 

Teaching Experience

  • Pythonによるデータ解析

    Waseda University  

    2024.09
    -
    Now
     

  • 基礎心理学特殊講義E（内容：感情・動機づけ・情動）

    Senshu University  

    2024.09
    -
    Now
     

  • Statistical Data Processing and Practice I

    Toyo University  

    2023.04
    -
    Now
     

  • Health psychology

    Bunkyo University  

    2020.10
    -
    2024.03
     

  • Developmental psychology

    Bunkyo University  

    2020.10
    -
    2024.03
     

 

Sub-affiliation

  • Affiliated organization   Global Education Center