Journal: In several psychological studies, subjects were given statements to read that caused them to form new beliefs. Later, the subjects were told that the original statements were false. The studies report, however, that most subjects persevered in their newly acquired beliefs, even after being told that the original statements were false. This strongly suggests that humans continue to hold onto acquired beliefs even in the absence of any credible evidence to support them.
Which one of the following, if true, most undermines the journal’s argument?The journal cites studies where people formed new beliefs based on given statements. Later, they were told the statements were false, yet most kept their beliefs. The journal concludes this shows humans hold beliefs even without credible evidence.
We need to find the option that most undermines this conclusion. The argument assumes that after learning the original statements were false, the subjects have no credible evidence for their beliefs. To weaken this, show they might have other credible evidence.
(A) Regardless of the truth of what the subjects were later told, the beliefs based on the original statements were, for the most part, correct.
This says the beliefs are true, but it does not show the subjects have credible evidence for them. Truth alone does not equal having evidence.
(B) It is unrealistic to expect people to keep track of the original basis of their beliefs, and to revise a belief when its original basis is undercut.
This explains why subjects might not change their beliefs, but it does not provide an alternative source of credible evidence. It does not weaken the claim about lacking evidence.
(C) The statements originally given to the subjects would be highly misleading even if true.
This describes the nature of the original statements, but it does not give a reason why subjects kept their beliefs after learning those statements were false. It does not weaken.
(D) Most of the subjects had acquired confirmation of their newly acquired beliefs by the time they were told that the original statements were false.
This directly weakens the argument. If subjects got confirmation (evidence) for their beliefs before hearing the original statements were false, then they have credible evidence. Therefore, they are not holding beliefs "in the absence of any credible evidence."
(E) Most of the subjects were initially skeptical of the statements originally given to them.
Initial skepticism might affect how strongly beliefs were formed, but it does not provide an alternative source of credible evidence for the beliefs. It does not undermine the conclusion.
Therefore, option (D) undermines the journal's argument by showing the subjects likely had credible evidence (confirmation) for their beliefs, challenging the claim that they held beliefs without evidence.
Answer: (D)