Cutler, Penrod, and Dexter (1990) conducted several experiments exposing mock jurors to expert testimony about the accuracy of eyewitnesses. The authors of this study found that participants who were NOT exposed to the expert testimony:.

overestimated the accuracy of eyewitnesses.

Explanation:

Cutler, Penrod, and Dexter (1990) conducted several experiments exposing mock jurors to expert testimony about the accuracy of eyewitnesses. The authors of this study found that participants who were NOT exposed to the expert testimony overestimated the accuracy of eyewitnesses.

which sentences ? that question is incomplete

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.