Faculty Profiles - IGARASHI Tasuku

Papers - IGARASHI Tasuku

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Motivations and Behaviors for Ensuring Privacy on Twitter

SAWADA Gota, IGARASHI Tasuku

Socio-Informatics Vol. 8 ( 3 ) page： 177 - 189 2020.7

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Socio-Informatics

The purpose of this study is to examine what factors motivate Twitter users to use a protected account and how these factors relate to self-disclose on their profile pages. Based on the interviews with 14 undergraduates using Twitter, we developed a questionnaire measuring motivations to use privacy settings on Twitter. We then conducted a survey on 153 undergraduates to report their Twitter usage and personal information disclosed online. Exploratory factor analysis identified three motivational factors to use privacy settings on Twitter: the boundary control for self-disclosure, the avoidance of troubles, and social influence. Logistic regression analysis was conducted to predict which motivational factors prevent or promote users to put personal information on their profile accessible in public. The boundary control motivation was negatively related to the disclosure of real names in public. In contrast, the social influence motivation was positively related to the disclosure of private information, such as facial photos on the public profile. Lower graders and females were also likely to disclose in public than higher graders and males, respectively. The current study implies that motivational factors other than privacy concerns lead people to protect or disclose themselves on social networking services.

DOI： 10.14836/ssi.8.3_177

CiNii Research

Overchoosing: A Mechanism of Tie-Formation in Social Networks

Tasuku Igarashi, Johank Koskinen

PsyArXiv 2020.6

Authorship：Lead author Language：English Publishing type：Research paper (other academic) Publisher：Center for Open Science

We introduce the concept of overchoosing as a fundamental mechanism of tie formation in directed social networks. The parameter represents a tendency for actors to send a lot of ties but receive few nominations back, something which implies the importance of modeling reciprocity violation as a basic tie-formation process. Analyzing large friendship network data (N = 1,575) by the stochastic actor-oriented models revealed that, under controlling for several endogenous tie formation processes, the parameter captured the formation of open triads and substantially improved the goodness of fit of the model to the data.

DOI： 10.31234/osf.io/47q39

The Hedonic and Eudaimonic Motives for Activities: Measurement Invariance and Psychometric Properties in an Adult Japanese Sample Reviewed

Ryosuke Asano, Tasuku Igarashi, Saori Tsukamoto

Frontiers in Psychology Vol. 11 page： 1220 2020.6

孤独感と対人関係の再帰的な構築 Reviewed

五十嵐祐

心理学評論 Vol. 63 page： 403 - 417 2020

Loneliness and the recursive formation of social environments

Igarashi Tasuku

JAPANESE PSYCHOLOGICAL REVIEW Vol. 63 ( 4 ) page： 403 - 417 2020

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JAPANESE PSYCHOLOGICAL REVIEW

Tackling loneliness is a challenging task in modern society. Recent research has focused primarily on the physiological nature of loneliness. However, the multifaceted psychological construct is clearly more than just a negative emotion. The virtue of helping each other can be undermined by the process in which loneliness breeds maladaptive social perception and behavior that also facilitate the avoidance of lonely individuals. To cut off the vicious cycle of loneliness, comprehending the dynamic nature of loneliness and social networks through the lens of social information processing is important. After introducing the conceptualization of loneliness, this paper discusses the process by which individuals feel isolated in dyadic/networked social connections, the social selection and influence mechanisms of loneliness, the distinction between loneliness and solitude, the current advances and limitation of loneliness interventions, and the importance of providing opportunities for social interactions for the lonely to deal with this modern disease.

DOI： 10.24602/sjpr.63.4_403

CiNii Research

孤独感と対人関係の再帰的な構築 Invited Reviewed

五十嵐祐

心理学評論 Vol. 63 ( 4 ) page： 403 - 417 2020

援助要請における援助者の切り替え方略：援助者数が援助要請者のストレスに及ぼす影響 Reviewed

古橋健悟, 五十嵐祐

社会心理学研究 2020

Switching helpers: Effect of number of helpers on help-seekers’ stress

Furuhashi, K., Igarashi, T.

Research in Social Psychology Vol. 36 ( 2 ) page： 39 - 48 2020

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society of Social Psychology

Repeated help-seeking from the same helper produces gradually stronger hesitation. Therefore, switching helpers in one’s social network could be an effective strategy. We conducted an online experiment to examine whether people feel less stressed if they switch helpers in a repeated help-seeking situation. After reading a vignette about a stressful situation (depression or unemployment), participants judged the level of stress and chose a helper in their social network. Participants then received feedback that the situation had not improved even after help had been given and repeated the choice five times. The results showed that participants perceived lower stress in both depression and unemployment situations if they sought help from a greater number of helpers after controlling for social network size and diversity of helpers. The effectiveness of switching helpers and its mechanisms are discussed.

DOI： 10.14966/jssp.1931

Scopus

CiNii Research

Inhibition of social pain for the execution of ostracizing under the name of utilitarianism

Tamai Ryuichi, Igarashi Tasuku

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 83 ( 0 ) page： 2B-022 - 2B-022 2019.9

Indiscriminative retaliation under unidentifiability

Sawada Gota, Igarashi Tasuku

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 83 ( 0 ) page： 3B-018 - 3B-018 2019.9

Psychometric properties of the Japanese version of the Imposing Memory Task (IMT-J) among Japanese adults

Hirashima Taro, Igarashi Tasuku

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 83 ( 0 ) page： 3B-068 - 3B-068 2019.9

Approval of ostracism as a legal sanction: The justification effect of utilitarian rationale,刑罰としての排斥の容認―功利主義的な根拠の正当化効果― Reviewed

Tamai, R., Igarashi, T.

Shinrigaku Kenkyu Vol. 90 ( 2 ) page： 187 - 193 2019.6

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

Ostracism is a contradicted social action because it has been widely adopted as a legal sanction but is also considered to be excessive enforcement. In the present study, we conducted a scenario-based experiment to examine the psychological process underlying the endorsement of ostracism in school settings. We focused on three general rationales to justify the sanction: a general prevention to protect public welfare (utilitarianism); a counter to deviance from social norms (retributivism); and a type of education to rehabilitate a perpetrator (moral education). The results showed that utilitarianism was more effective in justifying ostracism than retributivism or moral education. Further, preferences towards ostracism based in utilitarianism were less susceptible to influence from others. These findings indicate people’s general preference for the protection of public welfare over the segregation of wrongdoers.

DOI： 10.4992/jjpsy.90.17338

Scopus

CiNii Research

Development of the Japanese version of the three-item loneliness scale Reviewed

Igarashi, T.

BMC Psychology Vol. 7 ( 1 ) page： 20 2019

クラウドソーシングを利用したアンケートデータ収集のノウハウと課題

白木優馬, 五十嵐祐

デジタルプラクティス Vol. 9 ( 4 ) page： 874 - 885 2018.10

Language：Japanese Publishing type：Research paper (scientific journal)

近年，クラウドソーシングを用いて，大規模なサンプルを対象としてアンケートを配布する研究が活発に行われている．本稿では，クラウドソーシングを用いたアンケートデータ収集のメリットについてまとめたのち，筆者らのこれまで実践において直面してきた課題について紹介する．さらに，データの信頼性の担保やワーカへの倫理的配慮といった具体的な課題への対応に関するノウハウとともに，クラウドソーシングの利用にともなう各種の注意点についても紹介する．

CiNii Books

"Paying it forward" via satisfying a basic human need: The need for relatedness satisfaction mediates gratitude and prosocial behavior Reviewed

Yuma Shiraki, Tasuku Igarashi

ASIAN JOURNAL OF SOCIAL PSYCHOLOGY Vol. 21 ( 1-2 ) page： 107 - 113 2018.3

Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY

People who receive kindness tend to feel gratitude and act in a prosocial manner toward third persons (i.e., paying it forward). Combining the separate evidence that (a) gratitude leads to the formation of strong psychological bonds from a beneficiary to a benefactor and that (b) people become more prosocial toward strangers when the need for relatedness (NFR) is satisfied, two online experiments were conducted to examine if NFR satisfaction mediates the association between gratitude and prosocial behavior toward third persons. After evoking gratitude by recalling past experiences (Study 1) or writing a letter to someone (Study 2), participants were asked to make a donation from their remuneration for the experiment to a charity organization. As predicted, emotional manipulation promoted donation via feelings of gratitude and satisfied NFR. Implications of the current model for integrating previous findings are discussed.

DOI： 10.1111/ajsp.12211

Web of Science

Scopus

Mortality salience and altruistic behavior : Focusing on group identity and group permeability

Furuhashi Kengo, Igarashi Tasuku

対人社会心理学研究 = Japanese journal of interpersonal and social psychology ( 18 ) page： 71 - 75 2018.3

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：大阪大学大学院人間科学研究科対人社会心理学研究室

Previous studies have shown that people high in group identity are likely to cooperate with other group members. This study examines if mortality salience increases altruism among those low in group identity in impermeable groups. Results showed that participants low in group identity in the mortality salience condition behaved altruistically when the group permeability was low. Thus, people low in group identity adopt the strategy of being more altruistic only if it is difficult to leave the group. This suggests that when the group is impermeable, people low in group identity have no option but to behave altruistically to justify their cultural world-view in the group due to the difficulty to moving to other group.

DOI： 10.18910/70543

CiNii Books

Other Link： http://hdl.handle.net/11094/70543

The effects of collectivism and others attitudes on assent to ostracism

Tamai Ryuichi, Igarashi Tasuku

The Proceedings of the Annual Convention of the Japanese Psychological Association Vol. 81 ( 0 ) page： 3B-009 - 3B-009 2017.9

We Can’t Return Evil for Good: The Comparison between Direct and Indirect Reciprocity Reviewed

Yuma Shiraki, Tasuku Igarashi

Letters on Evolutionary Behavioral Science Vol. 8 ( 1 ) page： 4-7 2017.2

Regulatory focus and preference for cooperation: Choices in Prisoner's Dilemma tasks

Sato Yuki, Igarashi Tasuku

Japanese Journal of Social Psychology Vol. 33 ( 2 ) page： 93 - 100 2017

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society of Social Psychology

This study investigated the effect of a player's regulatory focus on his/her preference for cooperation and prosociality in a social dilemma situation. After the manipulation of regulatory focus, participants chose cooperation (remaining silent) or defection (betrayal) in simultaneous and sequential Prisoner's Dilemma (PD) tasks based on a traditional scenario of prison sentence rewards. Participants in the prevention focus condition showed more defection than did those in the promotion focus and the control conditions. In the sequential PD task, a greater number of participants in the prevention focus condition used an egoistic strategy (i.e., consistent defection) as the second movers than did those in the promotion focus and the control conditions, who tended to use a conditional cooperation strategy. These findings suggest that prevention-focused players show a less strong preference for cooperation and behave more selfishly when the pay-off matrix is loss-framed.

DOI： 10.14966/jssp.0947

Scopus

CiNii Books

CiNii Research

Conceptions of happiness and life satisfaction: An exploratory study in 14 national groups Reviewed

Joshanloo, M., Rizwan, M., Khilji, I. A., Ferreira, M. C., Poon, W.-C., Sundaram, S., Ho, L. S., Yeung, V. W.-l., Han, G., Bae, J., Demir, M., Achoui, M., Pang, J. S., Jiang, D.-Y., Lamers, S. M. A., Turan, Y., Lepshokova, Z. K., Panyusheva, T., Natalia, A., Asano, R., Igarashi, T., & Tsukamoto, S.

Personality and Individual Differences Vol. 102 page： 145-148 2016.11

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Papers - IGARASHI Tasuku