Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas

This study aimed to examine the effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas. The following three conditions were examined: the use of one's real name, pseudonymity (i.e., the use of a nickname), and complete anonymity. Participants made de...

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Main Authors: Hitoshi Terai, Shinji Kai, Misato Oi
Format: Article
Language:English
Published: Elsevier 2025-09-01
Series:Acta Psychologica
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0001691825006389
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author Hitoshi Terai
Shinji Kai
Misato Oi
author_facet Hitoshi Terai
Shinji Kai
Misato Oi
author_sort Hitoshi Terai
collection DOAJ
description This study aimed to examine the effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas. The following three conditions were examined: the use of one's real name, pseudonymity (i.e., the use of a nickname), and complete anonymity. Participants made decisions and evaluated others' decisions in the trolley and footbridge problems. The results indicated that during decision making, anonymity increased participants' preference for utilitarian decisions. This suggests that anonymity might diminish empathy, leading to a greater inclination toward utilitarian decisions. Conversely, during evaluations of others' decisions, anonymity generally made participants more accepting of nonutilitarian decisions and less accepting of utilitarian ones. These findings suggest that anonymity might facilitate more intuition-oriented evaluations in the process of evaluating decisions. These effects were not observed for pseudonymity, and their significance is discussed.
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spelling doaj-art-463502c8f63140028d1b5dfa0aace9d42025-08-20T03:56:17ZengElsevierActa Psychologica0001-69182025-09-0125910532510.1016/j.actpsy.2025.105325Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmasHitoshi Terai0Shinji Kai1Misato Oi2Graduate School of Humanity-Oriented Science and Engineering, Kindai University, 11-6, Kayanomori, Iizuka, Fukuoka 820-8555, Japan; Corresponding author.Graduate School of Humanity-Oriented Science and Engineering, Kindai University, 11-6, Kayanomori, Iizuka, Fukuoka 820-8555, JapanGraduate School of Humanity-Oriented Science and Engineering, Kindai University, 11-6, Kayanomori, Iizuka, Fukuoka 820-8555, JapanThis study aimed to examine the effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas. The following three conditions were examined: the use of one's real name, pseudonymity (i.e., the use of a nickname), and complete anonymity. Participants made decisions and evaluated others' decisions in the trolley and footbridge problems. The results indicated that during decision making, anonymity increased participants' preference for utilitarian decisions. This suggests that anonymity might diminish empathy, leading to a greater inclination toward utilitarian decisions. Conversely, during evaluations of others' decisions, anonymity generally made participants more accepting of nonutilitarian decisions and less accepting of utilitarian ones. These findings suggest that anonymity might facilitate more intuition-oriented evaluations in the process of evaluating decisions. These effects were not observed for pseudonymity, and their significance is discussed.http://www.sciencedirect.com/science/article/pii/S0001691825006389AnonymityDisinhibitionDual-processMoral dilemmaPseudonymity
spellingShingle Hitoshi Terai
Shinji Kai
Misato Oi
Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas
Acta Psychologica
Anonymity
Disinhibition
Dual-process
Moral dilemma
Pseudonymity
title Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas
title_full Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas
title_fullStr Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas
title_full_unstemmed Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas
title_short Effects of anonymity on decision making and evaluations of others' decisions in moral dilemmas
title_sort effects of anonymity on decision making and evaluations of others decisions in moral dilemmas
topic Anonymity
Disinhibition
Dual-process
Moral dilemma
Pseudonymity
url http://www.sciencedirect.com/science/article/pii/S0001691825006389
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