How Apps Hook You

This is not an accident. Social platforms use persuasive design — features built on purpose to make you check again and again. The core trick is the variable reward.

Two design tricks do most of the damage:

• Infinite scroll — There is no bottom of the page, so your brain never gets a "done" signal to stop.
• Likes and counts — Followers, hearts, and comments tap the same reward circuits as food or money, so each number feels like a tiny win.