How Social Media Alters Shopping Behavior: The New Psychological Mechanism Shaping Brand Trust

A new psychological mechanism is reshaping digital shopping behavior. Researchers at the University of Tennessee, led by Matthew Pittman, conducted three experiments on Instagram users, exposing them to ads for eco-friendly products. A significant finding emerged: participants experienced 'cognitive load'—a form of mental fatigue—after social media use. In this state, ads explicitly declaring products as the 'best' were preferred over those inviting users to evaluate the facts themselves. The study suggests that brands should leverage 'explicit recommendation' strategies to enhance credibility. However, this approach risks backfiring if the claims lack evidence, potentially triggering consumer skepticism.

Markets must assess how these findings could impact advertising for eco-friendly products. Financial decisions should ideally be made during peak cognitive performance hours, such as early mornings.