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The Conversation ·For the curious

Why You Let Down Your Guard on Ads When Scrolling on Social Media

by Matthew Pittman, Associate Professor of Advertising and Public Relations, University of Tennessee

Published 2026-07-17 12:22:55+00:00

Why does a pushy advertisement start to feel like a relief after a few minutes of scrolling?

0:00 / 8:45 · Narrator Rasalgethi

Context

A package arrives at the door containing a pair of dinosaur-themed swim trunks, and the buyer has no memory of why they clicked buy. Writing for The Conversation on 17 July 2026, researchers look at the mental fatigue that sets in after just thirty seconds of scrolling through a feed. This exhaustion changes how the brain handles a sales pitch. While a rested mind prefers to reach its own conclusions, a tired one finds comfort in a brand that is bossy, bold, and tells the shopper exactly what to think.

Show notes

Social media scrolling changes how people respond to advertising by creating mental fatigue. Researchers conducted three experiments with eco-friendly products to compare how users process direct sales pitches versus ads that let them draw their own conclusions. The results show that people are more likely to trust bold, direct claims when they are mentally tired because they lack the energy to check the facts for themselves.

Read on The Conversation →