Witnesses to the sniper attacks in Maryland and Virginia described seeing a white work van in the vicinity of the incidents. As a result of this, dozens of reports of suspicious white vans were received, even though the vans were behaving in perfectly normal way. Because the snipers actually drove a dark sedan, they were able to continue their terrible deeds longer. The people trying to solve the crime were operating under

A. a mental set.
B. formal concepts.
C. erroneous scripts.
D. a working backward heuristic.


Answer: A

Psychology

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