Which mathematical principle has been demonstrated to have the strongest psychological impact on consumer purchasing decisions in retail environments?

Consumer psychology relies heavily on mathematical principles to understand and predict shopping behaviors. From the strategic pricing models to the geometry of store layouts, numbers play a crucial role in influencing purchase decisions. This poll explores how mathematics intersects with consumer psychology to create effective retail strategies. Can you identify which mathematical concept has been proven most influential in consumer decision-making?

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Weber's Law (Just Noticeable Difference) - dictating the minimum price change needed to trigger consumer awareness
Bayes' Theorem - calculating probability of consumer preferences based on prior purchase history
Fibonacci Sequence - determining optimal product placement distances on retail shelves
Nash Equilibrium - balancing competitive pricing strategies between similar products