If you're wondering when artificial intelligence could start to change your job, most American business leaders believe that time is coming soon.

Confidence among CEOs fell further into negative territory last quarter, according to an index from the nonprofit Conference Board and the Business Council.

"Right now, CEOs are still uncertain," said Dana Peterson, chief economist with the Conference Board.

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The report found 64% of CEOs expect a mild economic slowdown over the next 12 to 18 months. But trade and tariffs are not their biggest concerns. They ranked geopolitical instability, cyber risks, and artificial intelligence and other emerging technologies at the top.

"What they're worried about is,

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