Abstract Marketers often use images to promote their products. For example, an advertisement for kitchen tools might display the tools alongside various ingredients, or an advertisement for a bookstore might showcase pictures of the store’s interior. One underlying visual characteristic of such images is the degree of “entropy”—or disorder—in their content. Motivated by a fundamental principle from physics—namely, that entropy can only increase over time—the present research examines how entropy influences consumers’ judgments and decisions. Across two pilot studies and five experiments, we find that while high-entropy images shift consumers’ temporal focus to the past, low-entropy images shift their temporal focus to the future. These entropy-induced shifts in temporal focus influence consumers’ decisions. Specifically, consistent with the notion of “fit fluency,” we find that consumers evaluate past-related (e.g., vintage) products more favorably when they are accompanied by high-entropy images and future-related (e.g., futuristic) products more favorably when they are accompanied by low-entropy images. We discuss the theoretical and managerial implications of our findings.

AbstractBillions of people across the globe use social media to acquire and share information. A large and growing body of research examines how consuming online content affects what people know. The present research investigates a complementary, yet previously unstudied question: how might sharing online content affect what people think they know? Sharing signals expertise, and people frequently internalize their public behavior into their private self‐concepts. We therefore posit that sharing information on social media may cause people to believe they are as knowledgeable as their posts make them appear. We examine this possibility in the context of “sharing without reading,” a phenomenon that allows us to isolate the effect of sharing on subjective knowledge from any influence of reading or objective knowledge. Six studies provide correlational (study 1) and causal (studies 2, 2a) evidence that sharing—even without reading—increases subjective knowledge, and test the internalization mechanism by varying the degree to which sharing publicly commits the sharer to an expert identity (studies 3–5). A seventh study investigates potential consequences of sharing‐inflated subjective knowledge on downstream behavior in the domain of financial decision‐making.