Consumer research has historically been siloed within the boundaries of economics, psychology, and marketing. However, the convergence of digital technology, evolving legal frameworks, and advances in behavioral science has created a compelling imperative for a multidisciplinary synthesis. This paper examines how law, technology, and behavioral insights can be systematically integrated to produce a more comprehensive understanding of consumer behavior, decision-making, and market outcomes. Drawing on cognitive psychology, behavioral economics, regulatory jurisprudence, and data-driven research methods, the paper identifies theoretical synergies and practical applications across domains including digital platform governance, algorithmic nudging, privacy law, and consumer protection regulation. The analysis reveals that neither legal frameworks nor technological affordances nor behavioral models, when applied in isolation, are sufficient to address the complexity of contemporary consumer environments. Rather, an integrative approach—one that marshals legal accountability, technological transparency, and behavioral insight simultaneously—offers the most robust foundation for advancing consumer welfare. The paper concludes by outlining a research agenda for multidisciplinary consumer scholarship and proposing design principles for policy interventions that leverage all three domains. Implications for regulators, platform designers, and consumer advocates are discussed...