提问：og12 94题

lorinlee

Studies in restaurants show that the tips left by customers who pay their bill in cash tend to be larger when the bill is presented on a tray that bears a credit-card logo. Consumer psychologists hypothesize that simply seeing a credit-card logo makes many credit-card holders willing to spend more because it reminds them that their spending power exceeds the cash they have immediately available.
Which of the following, if true, most strongly supports the psychologists’ interpretation of the studies?
(A) The effect noted in the studies is not limited to patrons who have credit cards.
(B) Patrons who are under financial pressure from their credit-card obligations tend to tip less when presented with a restaurant bill on a tray with a credit-card logo than when the tray has no logo.
(C) In virtually all of the cases in the studies, the patrons who paid bills in cash did not possess credit cards.
(D) In general, restaurant patrons who pay their bills in cash leave larger tips than do those who pay by credit card.
(E) The percentage of restaurant bills paid with a given brand of credit card increases when that credit card’s logo is displayed on the tray with which the bill is presented.

答案b。
不明白本题的逻辑思维是怎样的。
当看到有信用卡logo时，信用卡付款者比现金付款者付的小费多，因为觉得自己的支付能力大于持有的现金。答案为“财务压力大时，看到信用卡logo小费就付得少”。不明白答案在哪个方面加强了结论。
原题中的结论是强调“付小费多”，还是强调“付小费多”的原因？

HarrisZheng

the conclusion here is credit card logo is a reminder to holders of spending more money than they have immediately available

So, this effect can go either way---when holders are not in heavy debt, the logo reminded them that they can spend more, and , to those who already under obligation, the logo, however, had the adverse effect, it is screaming to the holders: "you 've already spent more than you can, now you are on the edge of broke~~~"

lorinlee

so the "credit card logo is a reminder " . well enough