IE:DPC, Ch12: Example of Bias from Reverse Causality

Example of how reverse causality (Y affects X) can bias estimates of the effect of X on Y, in the context of police (X) and crime (Y). [Note: the actual effect of X on Y is irrelevant for this example.]
Textbook (IE:DPC) "Introductory Econometrics: Description, Prediction, and Causality"
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