They should have known: Hindsight and outcome biases in child abduction cases.

McDermott, C. M., Miller, M. K., & DeVault, A. (2020). 

Two cognitive biases might partially account for public support of the ineffective AMBER Alert system. Hindsight bias is a cognitive error in which people with outcome knowledge overestimate the likelihood that this particular outcome would occur; outcome bias is an error made in evaluating the quality of a decision once the outcome is known.

An abstract is available to view online with restricted access to the full document. Journal of Applied Social Psychology50(7), 430-438. 

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