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Journal : jurnal interprof

BUY NOW PAY LATER USAGE AMONG GENERATION Z IN INDONESIA: AN INTEGRATION OF THEORY OF PLANNED BEHAVIOR AND MATERIAL VALUES THEORY Rahmadina Oktariani; Dewi Rahmayanti; Chairil Afandy
Jurnal Interprof Vol 12 No 1 (2026): Jurnal Interprof, April
Publisher : LPPM UNIVERSITAS BINA INSAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32767/interprof.v12i1.3169

Abstract

Purpose: This study aims to examine the influence of attitude toward behavior, subjective norms, perceived behavioral control, and materialism on intention to use and actual usage behavior of Buy Now Pay Later (BNPL) services among Generation Z in Indonesia, with intention as a mediating variable. Research Methodology: This study adopts a quantitative approach with an explanatory survey design. Data were collected from 255 Generation Z respondents aged 18–29 years who had used BNPL services, using purposive sampling and a structured questionnaire. Data analysis was conducted using Partial Least Squares Structural Equation Modeling (PLS-SEM) via SmartPLS 4.0, with bootstrapping of 5,000 subsamples. Results: Attitude, subjective norms, and perceived behavioral control positively and significantly influence both intention and BNPL usage behavior. Unexpectedly, materialism shows a significant negative effect on BNPL usage behavior, contrary to the hypothesized direction. Intention mediates the relationships of attitude and subjective norms toward BNPL usage behavior, but does not mediate the relationship of perceived behavioral control. Conclusions: This study extends TPB by demonstrating that its core constructs remain robust predictors of BNPL adoption even when materialism is introduced as a competing predictor, and by showing that materialism operates through a distinct, non-TPB mechanism that warrants further theoretical attention rather than being assumed to reinforce TPB pathways. Limitations: This study is limited to Generation Z users and relies solely on a cross-sectional design with self-reported questionnaire data, which precludes causal inference. Other factors such as financial literacy, trust, and habits were not included. Contributions: This study contributes empirical evidence on BNPL usage behavior among Generation Z in Indonesia, extending the TPB framework by integrating materialism as an additional predictor and examining mediation through intention, thereby offering novel evidence that materialism can act as a deterrent rather than a driver of debt-based payment usage.     
THE EFFECT OF ANCHORING BIAS AND HERDING BEHAVIOR ON STOCK INVESTMENT DECISIONS AMONG GENERATION Z IN INDONESIA: THE MEDIATING ROLE OF RISK PERCEPTION Khalif Mahaztra; Dewi Rahmayanti
Jurnal Interprof Vol 12 No 1 (2026): Jurnal Interprof, April
Publisher : LPPM UNIVERSITAS BINA INSAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32767/interprof.v12i1.3211

Abstract

Purpose: This study investigates the effects of anchoring bias and herding behavior on stock investment decisions among Generation Z investors in Indonesia, with risk perception as a mediating varable. Research Methodology: A quantitative approach was employed using primary data collected via online questionnaires distributed to 200 active Generation Z stock investors across Indonesia, selected through purposive sampling. Data analysis utilized Partial Least Squares Structural Equation Modeling (PLS-SEM) with SmartPLS 4.0 software. Results: Anchoring bias exerted the strongest overall influence on both risk perception and investment decisions, followed by herding behavior and respectively). Risk perception significantly and positively mediated both relationships and also exerted a direct positive effect on investment decisions, confirming its dual role as both a psychological mediator and an independent predictor of decision quality. Conclusions: Cognitive (anchoring) and social (herding) biases jointly shape Generation Z stock investment decisions in Indonesia, both directly and through the calibrating mechanism of risk perception, extending prospect theory by showing that elevated risk awareness sharpens rather than suppresses decision quality among digital native investors. Limitations: This study is limited to active Generation Z stock investors. The model explains 35.9% of the variance in risk perception, indicating that additional determinants remain unexplored. Moreover, the cross-sectional design and reliance on self-reported data limit causal inference and may introduce common method bias. Contributions: This study advances behavioral finance by confirming risk perception as a dual mediator between anchoring bias, herding behavior, and investment decisions among Generation Z investors in Indonesia