What does it mean that digital emotional contagion?

Social media and messaging transmit emotions across distance.

Example: You sit down on a Saturday morning feeling rested and calm. You open your phone to check the weather. But your thumb, out of muscle memory, taps a social media app first. Ten minutes later you are anxious about a geopolitical crisis you had not heard of, angry about a policy debate you have no stake in, and vaguely sad because three acquaintances posted career milestones that make your own progress feel inadequate. No one entered your room. No voice reached your ears. The emotional shift happened entirely through text, images, and an algorithm that selected those particular posts because they were the ones most likely to keep you scrolling — which means they were the ones carrying the strongest emotional charge.

Try this: For three consecutive days, run a digital contagion audit. Before each session of social media or news consumption, pause for ten seconds and rate your current emotional state on a simple scale: calm to activated, positive to negative. Write down both ratings. Then consume as you normally would, without trying to change your behavior. When you finish the session, immediately rate your emotional state again on the same two scales. At the end of three days, review your log. Calculate the average shift in activation and valence across all sessions. Identify which platforms, which times of day, and which types of content produced the largest emotional shifts. Use the check-in question from L-1285 — "Is this mine?" — for each post-session emotional state to determine how much of what you felt was absorbed versus endogenous.