Once a month, children are brought to [a London studio], one at a time, and shown a handful of episodes to figure out exactly which parts of the shows are engaging and which are tuned out.

For anyone older than 2 years old, the team deploys a whimsically named tool: the Distractatron.

It’s a small TV screen, placed a few feet from the larger one, that plays a continuous loop of banal, real-world scenes — a guy pouring a cup of coffee, someone getting a haircut — each lasting about 20 seconds. Whenever a youngster looks away from the Moonbug show to glimpse the Distractatron, a note is jotted down.

“It’s not super interesting, what’s on the Distractatron,” said Maurice Wheeler, who runs the research group. “But if they aren’t fully focused, they might go, ‘Oh, what’s that?’ and kind of drift over. We can see what they’re looking at and the exact moment when they got distracted.”

What a waste of all lives involved.