TY - JOUR AB - Purpose The purpose of this paper is to examine the ethical investment willingness decision-making process to understand how investors evaluate corporate social responsibility (CSR) actions.Design/methodology/approach Data were collected through a survey of 298 individual investors and analyzed using structural equation modeling.Findings Results reveal that perfectionist decision-making style is positively related to perceived moral intensity, substitutability of financial returns, and ethical investment willingness. In addition, perceived moral intensity and substitutability of financial returns are positively related to ethical investment willingness. Finally, perceived moral intensity is positively related to substitutability of financial returns, and a two-factor causal mediation model is supported.Research limitations/implications The limitation of this study was that the pre-tests and sampling methods required all participants to have investing experience; however, procurement of trading information for each investor was impossible; thus, actual investment behaviors were undetermined. This study shed light on the mediating roles of perceived moral intensity and the substitutability of financial returns. Future studies can further investigate the factors influencing perceived moral intensity and the substitutability of financial returns.Practical implications Future ethical investment education can focus on cultivate the ability to distinguish ethical investments and change ethical investment willingness into actual investment behavior.Originality/value Understanding the relationship between these variables can help understand why ethical investment willingness varies among investors and how the traditional financial theory investment decision model should be revised as, internationally, more people have begun to observe CSR and sustainable development. VL - 56 IS - 3 SN - 0025-1747 DO - 10.1108/MD-05-2017-0492 UR - https://doi.org/10.1108/MD-05-2017-0492 AU - Lin Yu-Cheng AU - Huang Chiung-Yao AU - Wei Yu-Shan PY - 2018 Y1 - 2018/01/01 TI - Perfectionist decision-making style and ethical investment willingness: A two-factor causal mediation model T2 - Management Decision PB - Emerald Publishing Limited SP - 534 EP - 549 Y2 - 2024/04/25 ER -