Behavioral Economics and Advertising
Classical economic approaches typically define humans as decision-makers who calculate their self-interest, make consistent choices, and maximize “expected utility” under uncertainty. Within this framework, the model of the “rational human” has long been analytically functional. However, when human behavior is examined more closely, it becomes clear that this model has significant limitations. In real life, people often do not choose what is objectively optimal; instead, they choose what feels closest, most familiar, and most reasonable at the moment. In other words, individuals do not always behave—nor are they able to behave—like ideal actors.
At this point, Herbert Simon’s concept of “bounded rationality” marks an important turning point. According to Simon, individuals operate under cognitive constraints: time is limited, attention is fragmented, and information-processing capacity is imperfect. As a result, people tend to choose not the “optimal” option, but one that appears sufficiently satisfactory. Decision-making, therefore, ceases to be the flawless calculation assumed in theory and instead becomes a practical, constrained, and context-sensitive process.
For this reason, explaining human behavior solely through mathematical reasoning is both difficult and incomplete. The Nobel Prize-winning work of Daniel Kahneman demonstrates that when making decisions under uncertainty, individuals systematically deviate from the predictions of standard economic theory. The critical point here is not that people make random errors, but that the human mind relies on recurring and predictable mental shortcuts. These deviations are not arbitrary; they emerge in identifiable patterns.
The Prospect Theory developed by Kahneman and Amos Tversky further clarifies this perspective. The theory shows that individuals make decisions not only based on final outcomes, but also on how they perceive gains and losses. In other words, decision-making is shaped not purely by logic, but also by perception, framing, and comparative evaluation. The same situation, when presented differently, can lead to entirely different reactions and decisions. This clearly demonstrates that economic choices are influenced not only by objective reality, but also by how that reality is experienced.
Richard Thaler extends this framework even further by placing psychology at the center of economic decision-making. According to his work, human decisions are shaped by tendencies toward bounded rationality, perceptions of fairness and reasonableness, and issues of self-control. People do not simply ask, “What do I gain from this?” They also consider questions such as “Does this feel fair?”, “Does this seem reasonable?”, and “Can I exercise self-control right now?” As a result, what we call a decision is often not a cold, neutral calculation, but a response formed in the gray area between psychology and economics.
At this intersection, the concepts of rationality and irrationality become directly linked to advertising. If individuals tend to choose not the optimal option but the one that feels closest, most familiar, and most reasonable, then the power of advertising lies not merely in providing product information, but in creating mental availability.
Advertising makes a product visible repeatedly, turning it into something familiar. What is familiar appears safer than what is unfamiliar; and what appears safe is often perceived as a more reasonable choice. In this way, advertising does not simply inform consumers—it also constructs the psychological foundation of their decisions.
From this perspective, advertising is not merely a communication activity, but a practice of influence grounded in an understanding of how the human mind works. Consumers often choose a product not only because they need it, but because they are familiar with it, encounter it frequently in their environment, and perceive it as the “logical option.” Therefore, the true impact of advertising lies less in the objective features of a product and more in the sense of familiarity, trust, and reasonableness it creates in the consumer’s mind.
