The Psychology Behind the ‘Buy’ Button: The Role of Overconfidence, Neuroticism, and Sensation Seeking in Stock Investment Decisions in Batam City

Johny Budiman; Isnaini Nuzula Agustin; Jessica Tania

doi:10.55681/economina.v5i8.3502

Authors

Johny Budiman Universitas Internasional Batam, Indonesia
Isnaini Nuzula Agustin Universitas Internasional Batam
Jessica Tania Universitas Internasional Batam, Indonesia

DOI:

https://doi.org/10.55681/economina.v5i8.3502

Keywords:

investors, psychological factors, risk perception, investment decision, Generation Z

Abstract

The rapid growth of retail investors in Indonesia, dominated by Generation Z, reflects positive developments in the capital market. However, this is not always accompanied by rational investment decision. This phenomenon indicates the inf luence of behavioral and psychological factors in the investment decision-making process. This study aims to examine the influence of behavioral bias on investment decisions, with risk perception as a mediating variable. Using surveys, numerical research technique was used with an emphasis on freshly collected data.The study sample included 365 respondents from Generation Z and Millennials in Batam City, Riau Islands, who are actively involved in the capital mark et.Using Structural Equation Modeling-Partial Least Squares (SEM- PLS) assisted by SmartPLS software, data analysis was carried out.The results show that risk perception and sensation seeking have a significant positive effect on investment decisions, with sensation seeking also having a significant effect on risk perception. Neuroticism has a significant negative effect on investment decisions but not on risk perception, while overconfidence is only significant on investment decisions. Mediation occurs only for sensation seek ing. These findings highlight the importance of improving financial literacy and risk awareness to encourage more rational and sustainable investment decisions, especially among young investors.

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References

(KSEI), K. S. E. I. (2025). Statistik Pasar Modal Indonesia Pertumbuhan Investor. Kustodian Sentral Efek Indonesia, 1–17. https://www.ksei.co.id/files/Statistik_Publik_Januari_2025_final.pdf

Adiputra, I. G. (2021). The Influence of Overconfidence, Representative Bias, and Risk Tolerance in Investment Decision Making: Evidence on Stock Investors in Indonesia. Journal of Hunan University（Natural Sciences）, 48(4), 195–205.

Ahmed, M. A., Khattak, M. S., & Anwar, M. (2022). Personality traits and entrepreneurial intention: The mediating role of risk aversion. Journal of Public Affairs, 22(1), 1–15. https://doi.org/10.1002/pa.2275

Alice, I., Giglioli, C., Llanes-jurado, J., & Parker, Z. J. (2021). Why Do We Take Risks ? Perception of the Situation and Risk Proneness Predict Domain-Specific Risk Taking. Frontiers in Psychology, 12(March), 1–12. https://doi.org/10.3389/fpsyg.2021.562381

Almansour, B. Y., Elkrghli, S., & Almansour, A. Y. (2023). Behavioral finance factors and investment decisions: A mediating role of risk perception. Cogent Economics and Finance, 11(2). https://doi.org/10.1080/23322039.2023.2239032

Ardini, F. S. (2023). The Influence of Overconfidence, Regret Aversion, Loss Aversion, and Herding Behavior on Investment Decision in The Capital Market With the Moderating Role od Risk Perception in Generation Z Students. International Journal of Social Sciense Adn Economic Research, 08(05), 936–950. https://doi.org/10.46609/IJSSER.2023.v08i05.001

Arie Wibowo, M., Khusniyah Indrawati, N., & Aisjah, S. (2023). The impact of overconfidence and herding bias on stock investment decisions mediated by risk perception. International Journal of Research in Business and Social Science (2147- 4478), 12(5), 174–184. https://doi.org/10.20525/ijrbs.v12i5.2663

Budiman, J., Yodiputra, J., & Agustin, I. N. (2025). How overconfidence and mental accounting influence investments ? The moderating role of financial literacy. Asian Management and Business Review, 5(1), 1–18.

Bursa Efek Indonesia. (2025). Jumlah Investor Pasar Modal Tembus 17 Juta, Investor Baru Lampaui 2 Juta. In IDX BURSA EFEK INDONESIA.

Cuandra, F., & Setiawan, M. (2025). Heuristic Bias and Loss Aversion Impact an Stock Investment Decision Making in Batam. 19(1), 94–107.

Daffa Rizky Ramadhianto, Hartanti, R., & Vivi. (2025). The Influence of Financial Self-Efficacy, Risk Perception, Financial Literacy, and Herding on Investment Decision. Atestasi : Jurnal Ilmiah Akuntansi, 8(2), 535–547. https://doi.org/10.57178/atestasi.v8i2.1692

Ferdinand, D. Y. Y. (2023). Overconfidence Heuristic-Driven Bias in Investment DecisionMaking: Mediating Effects of Risk Perception and Moderating Effects of Asymmetry Information. International Research Journal of Economics and Management Studies, 2(2), 301–309. https://doi.org/10.56472/25835238/irjems-v2i2p133

Fm, B. (2026). Jumlah Investor Pasar Modal Kepri Capai 483.909 SID,Batam Mendominasi. Radio Batam Indonesia. https://www.batamfm.com/artikel/barelang/item/3255-jumlah-investor-pasar-modal-kepri-capai-483-909-sid-batam-mendominasi

Gambetti, E., Zucchelli, M. M., Nori, R., & Giusberti, F. (2022). Default rules in investment decision-making: trait anxiety and decision-making styles. Financial Innovation, 8(1). https://doi.org/10.1186/s40854-021-00329-y

Haqqani, K., Aleem, M., Mahmood, S., Iqbal, A., El-kenawy, E. S. M., & Alharbi, A. H. (2025). Examining the mediating role of risk aversion and the moderating role of demographics in the relationship between personality traits and investment decisions. Acta Psychologica, 259(July), 105411. https://doi.org/10.1016/j.actpsy.2025.105411

Jiang, Z., Peng, C., & Yan, H. (2024). Personality differences and investment decision-making. Journal of Financial Economics, 153(December 2023), 103776. https://doi.org/10.1016/j.jfineco.2023.103776

Kamath, A. N., Shenoy, S. S., Abhilash, & Kumar, S. N. (2023). Impact of personality traits on investment decision-making: Mediating role of investor sentiment in India. Investment Management and Financial Innovations, 20(3), 200–211. https://doi.org/10.21511/imfi.20(3).2023.17

Karki, U., Bhatia, V., & Sharma, D. (2024). A Systematic Literature Review on Overconfidence and Related Biases Influencing Investment Decision Making. Economic and Business Review, 26(2), 130–150. https://doi.org/10.15458/2335-4216.1338

Kevin, M., Herman, K., Ferli, O., & Traits, T. B. P. (2023). Pengaruh The Big-Five Personality terhadap Investment Intentions dengan Attitude Toward Financial Risk sebagai Variabel Mediasi. STIE Indonesia Banking School, 01 No 2, 591–606.

Khezri, R., Pakmaram, A., Abdi, R., & Rezaei, N. (2023). Risk psychology and decision-making behavior of traders ( Prospect Theory test ). 14(April 2022), 207–219.

Kumar, P., Islam, M. A., Pillai, R., & Tabash, M. I. (2024). Risk Perception-Perceived Investor Performance Nexus: Evaluating the Mediating Effects of Heuristics and Prospects With Gender as a Moderator. SAGE Open, 14(2), 5–8. https://doi.org/10.1177/21582440241256444

Leiwakabessy, A., Patty, M., & Titioka, B. M. (2021). FAKTOR PSIKOLOGIS INVESTOR MILLENIAL DALAM PENGAMBILAN KEPUTUSAN INVESTASI SAHAM ( Studi Empiris Pada Investor Millenial di Kota Ambon ). Jurnal Akuntansi Dan Pajak, 22(01), 494–505.

Müser, S., Hemmerich, M., & Schmitz, F. (2024). Individual differences in Bitcoin investment: The role of personality, attitudes, and knowledge. Journal of Behavioral and Experimental Economics, 113(August), 102289. https://doi.org/10.1016/j.socec.2024.102289

Nabilah, D., Widia, S., & Kunci, K. (2025). Peran Mediasi Risk Perception antara Behavioral Bias dan Investor Investment Decisions Informasi Artikel. UNNES Business Quarterly, 1(1), 2025. http://journal.unnes.ac.id/journals/UBQ

Nadhila, A., Sembel, R., Malau, M., & Indonesia, U. K. (2024). The influence of overconfidence and risk perception on investment decisions : The moderating effect of financial literacy on individual millennial generation investors. Journal of Universal Studies, 4(06), 5280–5299.

Pavlíček, A., Bobenič Hintošová, A., & Sudzina, F. (2021). Impact of Personality Traits and Demographic Factors on Risk Attitude. SAGE Open, 11(4). https://doi.org/10.1177/21582440211066917

Rajasekar, A., Pillai, A. R., Elangovan, R., & Parayitam, S. (2023). Risk capacity and investment priority as moderators in the relationship between big-five personality factors and investment behavior: a conditional moderated moderated-mediation model. In Quality and Quantity (Vol. 57, Issue 3). Springer Netherlands. https://doi.org/10.1007/s11135-022-01429-2

Ramashar, W., Sandri, S. H., & Hidayat, R. (2022). Faktor Psikologi dan Keputusan Investasi Mahasiswa di Pasar Modal. Jurnal Riset Akuntansi Dan Keuangan (Jrak), 10(1), 93–102. https://doi.org/10.17509/jrak.v10i1.36709

Singh, Darmendra Malik, G. J. A. (2024). Overconfidence bias among retail investors : A systematic review and future research directions. Investment Management and Financial Innovations. https://doi.org/10.21511/imfi.21(1).2024.23

Son, M., & Jeong, G. C. (2023). Influence of Sensation Seeking and Life Satisfaction Expectancy on Stock Addiction Tendency: Moderating Effect of Distress Tolerance. Behavioral Sciences, 13(5). https://doi.org/10.3390/bs13050378

Togan, A., Tiniç, M., & Giray, T. C. (2025). Risk perceptions and financial decision making. Borsa Istanbul Review, August, 1–8. https://doi.org/10.1016/j.bir.2025.08.007

ul Abdin, S. Z., Qureshi, F., Iqbal, J., & Sultana, S. (2022). Overconfidence bias and investment performance: A mediating effect of risk propensity. Borsa Istanbul Review, 22(4), 780–793. https://doi.org/10.1016/j.bir.2022.03.001

Willie Kurnijanto, A., Joni, J., Videlia Sumbodo, K., Inggrit Wijaya, L., & Silvia Sutejo, B. (2025). Influence of Behavioral Bias on Investment Decision with Risk Perception as a Mediating Variable: A Study on Generation Z at the Indonesia Stock Exchange. Dinasti International Journal of Economics, Finance & Accounting, 5(6), 5741–5752. https://doi.org/10.38035/dijefa.v5i6.3643

Yoga, I., Hastuti, R., Pramesti, W., & Rahmayati, A. (2025). The Power of Social Media: Shaping Risk Perception and Investment Decisions Among Young Equity Investors. Al-Intaj : Jurnal Ekonomi Dan Perbankan Syariah, 11(1), 187. https://doi.org/10.29300/aij.v11i1.5205

Zhang, D., & Fan, M. (2022). Neuroticism and fear of COVID- during the COVID- pandemic : Testing the mediating role of intolerance of uncertainty and sense of control among Chinese high school students. Frontiers in Psychology, 13, 1–10. https://doi.org/https://doi.org/10.3389/fpsyg.2022.1010767