Purpose- This study investigates the complex relationship between sensation-seeking, biological indicators, and financial risk-taking behavior. Utilizing a digital research approach, the study examines how individual differences in sensation seeking, measured by the Zuckerman Sensation Seeking Scale (SSS-V), correlate with financial risk tolerance. Methodology- Each unit of analysis is categorized as a risk-averse, risk-neutral, and risk-lover according to both biological and probabilistic game attitudes. Biological indicators, specifically the 2D:4D ratio, are used to categorize individuals as risk-averse, risk-neutral, or risk-lover. The research employs a probabilistic lottery game to further classify participants' risk preferences. Findings- Findings reveal that while sensation seeking is generally associated with higher financial risk-taking, the interplay between biological indicators and risk behavior is nuanced. Probabilistic game categorization results indicate that sensational-seeking score not only for total but also for subdimension is not statistically significant. Conclusion- Notably, individuals with higher sensation-seeking scores do not always exhibit higher financial risk tolerance. Biological indicators and probabilistic game classification will indicate the different mean values of the sensational-seeking score. Biological indicators differentiate the mean difference of individuals’ sensational-seeking scores. The study contributes to the understanding of how psychological traits and biological factors jointly influence financial decision-making. Keywords: Financial risk-taking, 2D:4D ratio, digital research, sensation seeking, risk tolerance JEL Codes: D81, D84, D91