This conceptual paper examines the influence of psychological principles on consumer decision-making within digital shopping environments, integrating psychological theories with empirical observations to understand how cognitive, emotional, and social factors shape consumer behaviors online. By reviewing existing literature and applying a constructivist epistemology and relativist ontology, the study develops a conceptual framework highlighting the impact of digital interface design, information availability, and personalized marketing on consumer choices. The paper analyzes various examples and identifies vital psychological triggers and decision-making barriers, offering strategic insights for enhancing digital marketing practices. This research contributes to academic and practical understandings of digital consumer behavior, proposing that a more profound integration of psychological insights can lead to more effective and ethically grounded marketing strategies in the digital era.