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All Journal Al-Jinayah: Jurnal Hukum Pidana Islam IECON: International Economics and Business Conference
Pebriyanti
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Economics, Econometrics & Finance Law, Crime, Criminology & Criminal Justice

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The Influence of Cognitive Dissonance Bias, Overconfidence Bias, and Herding Bias on the Investment Decisions of West Kalimantan Society in the Indonesia Stock Exchange Pebriyanti; Dedi Hariyanto; Heni Safitri
IECON: International Economics and Business Conference Vol. 3 No. 1 (2025): International Conference on Economics and Business (IECON-3)
Publisher : www.amertainstitute.com

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65246/3r1f6e85

Abstract

This study examines the influence of cognitive dissonance bias, overconfidence bias, and herding bias on investment decisions in stocks listed on the Indonesia Stock Exchange. The study employs a questionnaire method as a data collection technique, involving a sample of 150 respondents, all of whom are residents of West Kalimantan who invest in stocks on the Indonesia Stock Exchange. The data analysis techniques used include multiple linear regression analysis, multiple correlation coefficient (R), coefficient of determination (R²), simultaneous test (F-test), and partial test (t-test). The results of the study indicate that cognitive dissonance bias, overconfidence bias, and herding bias have a positive and significant influence on investment decisions. This suggests that these three types of behavioral biases play an important role in the individual investment decision-making process. In other words, when investors experience a mismatch between their beliefs and new information, exhibit excessive self-confidence, or tend to follow the decisions of the majority, they are more likely to make investment decisions without thoroughly considering rational analysis. These findings highlight the importance of understanding investor psychology and financial literacy in minimizing the impact of cognitive biases. Proper education and enhanced awareness of financial behavior are expected to help investors make more objective and rational decisions, thereby reducing potential losses and improving the quality of investment decisions in the capital market.
Legal Perspectives on Breast Grabbing as an Act of Sexual Harassment: Comparing Indonesian Positive Law with Islamic Criminal Law: Perspektif Hukum tentang Begal Payudara sebagai Tindakan Pelecehan Seksual: Membandingkan Hukum Positif Indonesia dengan Hukum Pidana Islam Fahmi, Zul; Fakhyadi, Defel; Pebriyanti; Asrofi; Suroto
Al-Jinayah : Jurnal Hukum Pidana Islam Vol. 11 No. 1 (2025): June 2025
Publisher : Islamic Criminal Law Study Program, Faculty of Sharia and Law, Sunan Ampel State Islamic University Surabaya, Surabaya, East Java, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/aj.2025.11.1.26-43

Abstract

This research examines the phenomenon of breast grabbing as an act of sexual harassment that threatens the dignity and well-being of the victim, as well as exposing shortcomings in the legal protection system in Indonesia. This research aims to compare the handling of breast begging/grabbing cases according to Indonesian positive law and Islamic criminal law, analyze the social impacts caused, and explore more effective prevention strategies. This research employed a qualitative method and a normative approach, incorporating a literature review. The results show that Indonesian positive law provides broader protection for the psychological impact of victims and imposes strict sanctions, including imprisonment, for perpetrators. In contrast, Islamic criminal law emphasizes moral recovery and social balance, as well as sanctions determined based on the concept of ta’zīr, which considers the benefit to society. The synergy between the two legal systems is a strategic step in formulating more effective prevention and law enforcement policies for breast grabbing, and opens up opportunities for further research to develop a legal framework that is responsive to social dynamics and the values of justice.
Co-Authors Asrofi Dedi Hariyanto Defel Fakhyadi, Defel Heni Safitri SUROTO Zul Fahmi