Question

what is it a called ?

a phenomenon produced when what one witness says about a crime can affect what another witness will say, if those witnesses communicate with one another or come to learn what the other has reported.

Answer 1

[AI-generated answer — Bot]

The phenomenon is called "witness contamination."

Answer 2

[AI-generated answer — Step-by-Step Bot]

The phenomenon you are referring to is called "contagion effect" or "witness contamination." This occurs when one witness's account of a crime influences the testimony of another witness who has communicated or become aware of the other witness's report.