28. Fact 1: Television advertising is becoming less effective: the proportion of brand names promoted on television that viewers of the advertising can recall is slowly decreasing. Fact 2: Television viewers recall commercials aired first or last in a cluster of consecutive commercials far better than they recall commercials aired somewhere in the middle. Fact 2 would be most likely to contribute to an explanation of fact 1 if which of the following were also true?
A. The average television viewer currently recalls fewer than half the brand names promoted in commercials he or she saw. B. The total time allotted to the average cluster of consecutive television commercials is decreasing. C. The average number of hours per day that people spend watching television is decreasing. D. The average number of clusters of consecutive commercials per hour of television is increasing. E. The average number of television commercials in a cluster of consecutive commercials is increasing.
事实一:广告效果差,因为人们能记住的广告比例在下降(记住的/看过的)
事实二:人们更能记住每个广告段的开头/结束的广告。问下列选项加强事实一?(即加强“比例在下降”这一说法)
根据事实二,人们不论看哪串广告,一共记住“开头+结束”共两个,如果在这串“看过的”广告中,广告总数增加,那么记住的比例就下降,即为加强,选E;
看D:“每小时的广告串数增加”只能说明:每串的开头/结束的广告数量增加,分子增加了,但是不知道每串广告的总数,因此“看过的”分母有可能变大,有可能变小。,对结论同时存在加强/削弱的可能,所以不能得知“记住的/看过的比例”,不对。 |