Predict first, then read

What happened at Google?

Make your call before you read the case. Then see the dated outcome, its source, its grades and the psychology behind it.

Google

Round 1 of 1Make your first call

GooglePay

Real case

Google ran long-running experiments on how many ads to show in search. People shown more, lower-quality ads gradually learned to ignore ads. What did Google do with the result?

Showed even more ads to make up the clicksCut ad load on mobile search by 50%Removed ads from mobile searchNothing: short-term revenue won

A–D to choose, ↵Enter to lock in

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