Faculty Profiles - IGARASHI Tasuku

Papers - IGARASHI Tasuku

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A preliminary study on the relationships between mentalizing and social network size

Hirashima Taro, Igarashi Tasuku

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 86 ( 0 ) page： 4AM-012-PC - 4AM-012-PC 2022

社会心理学から「孤独」にアプローチする

五十嵐祐

臨床心理学 Vol. 22 page： 218 - 222 2022

社会心理学から「孤独」にアプローチする

五十嵐祐

臨床心理学 Vol. 22 page： 218 - 222 2022

Generalized trust and social selection process Reviewed

Tasuku Igarashi, Taro Hirashima

Frontiers in Communication Vol. 6 2021.5

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Frontiers Media SA

Generalized trust relieves individuals in a socially uncertain situation from dyadic constraints of existing ties and helps them change ties with other individuals to acquire better resources. However, much evidence in the emancipation role of generalized trust as a booster of new relationship formation has been limited to laboratory experiments or cross-sectional surveys. We conducted a four-wave longitudinal survey to test whether individuals high in generalized trust actively switch ties and form open triads in dynamic social networks. Stochastic Actor-Oriented Models were employed to analyze structural changes in advice and personal discussion networks among first-year undergraduates. Results showed the predicted patterns of social selection processes based on generalized trust when the dynamics of the two networks were analyzed simultaneously: only in the advice network, individuals high in generalized trust tended to terminate existing ties, create new ties, and show a decreasing trend toward forming close triads when the degree of local clustering was large. Effective tie-formation strategies of individuals high in generalized trust in a multiplex network structure are discussed.

DOI： 10.3389/fcomm.2021.667082

Web of Science

Odd man out for everyone: The justification of ostracism to maximize the whole group's benefits

Tamai Ryuichi, Igarashi Tasuku

EUROPEAN JOURNAL OF SOCIAL PSYCHOLOGY Vol. 51 ( 2 ) page： 213 - 221 2021.3

Psychometric properties of measures of hedonic and eudaimonic orientations in Japan: The HEMA scale Reviewed

Ryosuke Asano, Saori Tsukamoto, Tasuku Igarashi, Veronika Huta

Current Psychology Vol. 40 ( 1 ) page： 390 - 401 2021.1

Odd man out for everyone: The justification of ostracism to maximize the whole group's benefits Reviewed

Tamai, R, Igarashi, T

European Journal of Social Psychology. 2021

日本語版幸せへの恐れ尺度と日本語版幸せの壊れやすさ尺度の信頼性・妥当性の検討 Reviewed

生田目光, 猪原あゆみ, 浅野良輔, 五十嵐祐, 塚本早織, 沢宮容子

心理学研究 2021

Processes of social influence on sampling behavior: The effect of other’s positive attitude and receiver’s prior experience Reviewed

Tsuchiya, K, Kashima, Y, Yoshida, T, Harada, C, Igarashi, T

Japanese Psychological Research 2021

Reliability and validity of the japanese versions of the fear of happiness scale and the fragility of happiness scale

Hikari Namatame, Ayumi Inohara, Ryosuke Asano, Tasuku Igarashi, Saori Tsukamoto, Yoko Sawamiya

Shinrigaku Kenkyu Vol. 92 ( 1 ) page： 31 - 39 2021

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Psychological Association

This study investigated the reliability and validity of the Japanese versions of the Fear of Happiness Scale and the Fragility of Happiness Scale. The scales were administered to 341 Japanese undergraduates. Confirmatory factor analysis showed that, like the original versions, the Japanese Fear of Happiness Scale and the Fragility of Happiness Scale each had a one-factor structure. The two scales also each had good internal consistency, test-retest reliability, and construct validity. Furthermore, the scales showed incremental validity by predicting psychological elements (life satisfaction, depression, anxiety, stress) better than the behavioral inhibition system (BIS) and the behavioral activation system (BAS). The results of the present study revealed that the Fear of Happiness Scale and the Fragility of Happiness Scale had an adequate reliability and validity in this Japanese group.

DOI： 10.4992/JJPSY.92.20206

Scopus

CiNii Research

Text Mining Approach to Quantify Consumer Psychology and Behavior in COVID-19 Pandemic

SASAHARA Kazutoshi, OKUDA Shimpei, IGARASHI Tasuku

Proceedings of the Annual Conference of JSAI Vol. JSAI2021 ( 0 ) page： 1D3OS3b04 - 1D3OS3b04 2021

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society for Artificial Intelligence

On social media, a variety of information is posted and shared in real time on a daily basis. Many of these posts relate to the impact of the COVID-19 pandemic and consumer life. Such spontaneous “real voices” (texts) from consumers contain potential signals for quantitatively understanding consumer psychology and behavior in the pandemic. In this study, we quantify consumer psychology and behavior from large-scale social data on Twitter, and discuss analytical methods and cases to gain insights into the resale phenomenon in the pandemic. Specifically, by applying our psychological category dictionary “J-LIWC” and moral foundation dictionary “J-MFD” to the above data, we were able to visualize that different consumer emotions were evoked depending on the types of product resold, such as toilet paper or masks, and what kind of moral violation consumers perceived about the resale. Furthermore, by analyzing the above data using a word co-occurrence network, we observed trends in products resoled and changes in purchasing behavior linked to the pandemic’s progression. These findings provide a hint for reconstructing the society and economy toward the post-corona era.

DOI： 10.11517/pjsai.jsai2021.0_1d3os3b04

CiNii Research

J-LIWC2015による日本語テキスト解析

五十嵐祐, 笹原和俊, 奥田慎平

日本心理学会大会発表論文集 Vol. 85 ( 0 ) page： TWS-003 - TWS-003 2021

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人日本心理学会

計算社会科学の領域において，デジタル化された文字情報（テキストデータ）から書き手の感情状態や心的態度を多面的に推測する，テキストデータ解析の重要性はますます高まっている。本ワークショップでは，発表者らが開発した，テキストデータ解析のデファクト・スタンダードであるLIWC2015の日本語版（J-LIWC2015）について紹介する。ワークショップでは，Pythonによる日本語テキストデータの前処理の方法（MeCabを用いた形態素解析）や，分析の手順について解説を行う。また，データサイエンス領域での活用事例についても紹介する。参加にあたって特別な事前知識は必要としないが，前処理を行うにはコマンドラインでの操作にある程度慣れておく必要がある。また，前処理後の分析には英語版LIWC2015のソフトウェアが必要となるため，手元で分析を行いたい場合は各自で準備されたい。

DOI： 10.4992/pacjpa.85.0_tws-003

CiNii Research

援助場面の想起が援助者・援助要請者が知覚する援助コストに及ぼす影響

古橋健悟, 五十嵐祐

日本心理学会大会発表論文集 Vol. 85 ( 0 ) page： PC-068 - PC-068 2021

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人日本心理学会

問題が生じた際に他者に援助を求める行動である援助要請行動は，問題に対する対処行動として有効である。先行研究では，援助者のコストが大きい場合，援助要請行動は抑制されることが示されている。一方，援助要請者は，援助者のコストを過大評価する傾向がある。本研究では，援助行動の想起を行うことにより，この援助者と援助要請者間の差異を減じることができるかどうかを検討した。実験では，援助体験・援助拒否体験・差異体験（援助者と援助要請者間の差異を感じた体験）を想起することの効果を検討した。参加者にいずれかの想起を行うように求めた後，参加者自身が援助者となるシナリオ・援助要請者となるシナリオのそれぞれについて，援助者のコストを評価するよう求めた。その結果，差異体験の想起により，援助者のコストが低く知覚されることが示された。一方，援助拒否体験の想起により，援助者のコストが高く知覚されることが示された。また，いずれの想起も，援助者・援助要請者間の差異を減じる効果は見られなかった。本研究の結果から，差異体験の想起は，援助行動・援助要請行動を促進する介入に繋がる可能性が示唆された。

DOI： 10.4992/pacjpa.85.0_pc-068

CiNii Research

「小さなシグナル」に耳を澄ます—クラウド型ソフトウェアが拓く，新たな時代の学生・研究体験創造—

五十嵐祐, 辻野真平, 中嶋祐一, 久崎智子, 栃木哲郎

日本心理学会大会発表論文集 Vol. 85 ( 0 ) page： IS-001 - IS-001 2021

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人日本心理学会

研究をより速く，より正確に行うための手段を，より簡単に，より多くのユーザーに提供できるよう，調査プラットフォームは従来のデスクトップ型から今日のクラウド型のソフトウェアへと進化してきた。また，テクノロジーの進化やパンデミックは，教室・大学の在り方にも大きな変化を及ぼしている。本シンポジウムでは，今年の 5 月に更に使いやすく進化した，クアルトリクスのクラウド型調査プラットフォームの全体像とともに，クアルトリクスのスーパーユーザーとして日本語版クアルトリクスマニュアル（非公式版）執筆を独自に手がけた五十嵐氏から，具体的なユースケースをご紹介いただく。また，刻々と進化を続ける時代の変化を検知・観察・分析する手法として，クアルトリクスは「XM（エクスペリエンス管理）」を提唱している。同社のXMソリューションストラテジーディレクターである久崎から，XM の視点を活用することによって開けてくる，新たな時代の学生・研究体験を作り上げていくための地平について紹介する。

DOI： 10.4992/pacjpa.85.0_is-001

CiNii Research

Does a reduction in subjective value due to delaying extra reward promote donation?

Kurita Maho, Igarashi Tasuku, Kiyokawa Sachiko

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 84 ( 0 ) page： PC-102 - PC-102 2020.9

Crowd gaze cueing effects by pareidolia faces: Is ensemble perception of social information different processes from those of low-level physical information?

Hirashima Taro, Igarashi Tasuku

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 84 ( 0 ) page： PI-073 - PI-073 2020.9

The effects of perceived helpers’ cost on the helper selection

Furuhashi Kengo, Igarashi Tasuku, Kiyokawa Sachiko

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 84 ( 0 ) page： PC-015 - PC-015 2020.9

“I'll give it to you if it's such a ‘small' amount”: Prosocial behavior based on delay discounting and micro-donation

Kurita Maho, Igarashi Tasuku, Kiyokawa Sachiko

Cognitive Studies: Bulletin of the Japanese Cognitive Science Society Vol. 27 ( 3 ) page： 345 - 355 2020.9

Language：English Publishing type：Research paper (scientific journal) Publisher：Japanese Cognitive Science Society

Charitable donations play an important role in the upliftment of a society. This study examines how to facilitate donations by subjective value of the money. Previous studies have shown that people generally discount delayed value of a reward with delay of receipt. We conducted an online experiment in which an extra reward was handed out by lottery to participants and they were asked to make a judgment on the extra reward, and used a 3 (amount of extra reward: 50/500/1000 yen) × 2 (delay: a day/a month) design resulting in six conditions. We hypothesized that the smaller the amount of an extra reward and the more it is delayed, the lower the subjective value of the reward becomes, and the more people would be willing to donate. Two-hundred and two undergraduates were randomly assigned to one of the six conditions. They were asked to answer a questionnaire measuring participants' delay-discounting rates, social value orientation (SVO), subjective socioeconomic status (subjective SES), and money beliefs. They were then told they had received an extra reward and were required to choose one of three options for the delayed extra reward: receive, reject, or donate. The results showed that a smaller extra reward and higher delay-discounting rates increased donation choice, but we could not obtain the effect of the delay in time until the participants received the extra reward. Therefore, we concluded that reducing the subjective value of the money could promote donation.

DOI： 10.11225/cs.2020.032

CiNii Research

I’ll give it to you if it’s such a ‘small’ amount: Prosocial behavior based on delay discounting and micro-donation. Reviewed

Kurita, M, Igarashi, T, Kiyokawa, S

Cognitive Studies: Bulletin of the Japanese Cognitive Science Society Vol. 27 ( 3 ) page： 345 - 355 2020.9

SNSにおけるプライバシー設定機能の利用動機と個人情報の記載行動との関連：大学生のTwitterユーザーを対象とした検討 Reviewed

澤田昂大, 五十嵐祐

社会情報学 Vol. 8 ( 3 ) page： 177 - 189 2020.8

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