The Calhoun Effect
Published April 29, 2026
This video has 4.96M views and 115K likes, ranking #953,907 globally among tracked YouTube videos by view count.
At a glance
Views
4,967,115
Likes
115,402
Comments
3,274
Performance vs. channel
Outlier score
Engagement rate
More features coming
We're working on new analytics and tools. Stay tuned.
About
In 1968, scientist John Calhoun built a literal paradise for mice. They had unlimited food, perfect weather, and zero predators. Five years later, every single one of them was dead. This is the story of Universe 25, one of the most disturbing psychological experiments ever conducted. Most people hear about the "mouse…
- Published
- April 29, 2026
- Made for kids
- No
More features coming
We're working on new analytics and tools. Stay tuned.
Frequently asked questions
How accurate are these YouTube video analytics?
View, like, and comment counts come from YouTube's public API and refresh regularly. Growth and revenue figures are estimates built from tracked historical data, so they can differ slightly from what the creator sees privately in YouTube Studio.
What is the outlier score?
How this video's views compare to the channel's usual Shorts or long-form video. A 2x score means double the usual views for that channel, 0.5x means half.
What is engagement rate and how is it calculated?
Likes and comments per view, compared to this channel's typical engagement rate — shown as above or below what's usual for the channel.
How is the revenue estimate calculated?
It's a rough public estimate based on a $0.7–$2.0 CPM (revenue per 1,000 views) applied to view count — not actual creator earnings, which depend on ad rates, audience geography, and monetization settings YouTube doesn't expose publicly.
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