Yale Researcher Cohen (1962)paid Some Students Relatively Little and Others

Yale researcher Cohen (1962) paid some students relatively little and others relatively more to write an essay that contradicted their true beliefs about the New Haven police.Results of his experiment demonstrated that

A) students who were paid little were more willing to ride along with the police.
B) the greater the external justification,the greater the shift in participants' attitudes toward the police.
C) the size of the incentive changed students' attitudes only if they privately liked the police.
D) in the absence of large incentives,students changed their attitudes about the police.