In a Study on the Anchoring Heuristic That Is Described

Multiple Choice

In a study on the anchoring heuristic that is described in the textbook,students were given a relatively high,arbitrary identification number to copy into their questionnaires,and then were asked to estimate the number of physicians listed in a telephone book.Some students were warned that the ID number might affect their judgments.What did the researchers discover?

A) students who were warned performed more accurately than control group students.
B) the use of the anchoring heuristic led to more accurate responses in all students.
C) the estimates were affected by the arbitrary identification number,even when students were warned.
D) the estimates were rarely affected by the arbitrary number,regardless of whether students were warned.