The impact of a particular aspect of a product on consumer attitudes, thus influencing their purchasing decisions, is what is known as perceived quality. Sometimes, a phenomenon known as the von Restorff effect is observed, where distinctive packaging, an unusual advertising message, or a specific communication strategy becomes a defining element of the product, thereby promoting brand recall among consumers. According to Éric Vernette and Jean-Luc Giannelloni, methods aimed at identifying these defining attributes can sometimes fail to reveal the decisive characteristics, because consumers tend to self-censor certain attributes deemed socially undesirable. The salience of a stimulus is therefore the quality that gives it the capacity to be noticed and perceived by individuals.