[問題]大全12-16

[shena]

In a study of the effect of color on productivity, 50 of 100 factory workers were moved from their drab workroom to a brightly colored workroom. Both these workers and the 50 who remained in the drab workroom increased their productivity, probably as a result of the interest taken by researchers in the work of both groups during the study.
Which of the following, if true, would cast most doubt upon the author’s interpretation of the study results given above?

(A) The 50 workers moved to the brightly colored room performed precisely the same manufacturing task as the workers who remained in the drab workroom.
(B) The drab workroom was designed to provide adequate space for at most 65 workers.
(C) The 50 workers who moved to the brightly colored workroom were matched as closely as possible in age and level of training to the 50 workers who remained in the drab work-room.
(D) Nearly all the workers in both groups had volunteered to move to the brightly colored workroom.
(E) Many of the workers who moved to the brightly colored workroom reported that they liked the drab workroom as well as or better than they liked the brightly colored workroom.

Ans:(B)

題目是研究色彩和生產力之間的關係
兩組員工在不同色調的工作室裡的生產力都增加了
要weaken
(B)提到的是空間的大小....和題目有何關聯呢?

請大大幫忙解惑
TKS~

[sklpeng]

B是給出它因來weaken

題幹的思路是把100人分成兩組50人+色彩的變數 =>兩組工作效率提升
B則提供色彩以外的變數(空間) 解釋說100人效率不敵兩組50人的效率
原因在於空間太小,色彩無關,只要把人數降到65人以下就好

常見的weaken手法
請樓主多加回味

[訪客]

Both these workers and the 50 who remained in the drab workroom increased their productivity, probably as a result of the interest taken by researchers in the work of both groups during the study.

我不懂上面這一句,還請有人可以解釋這一句,被搞混了

[cocaine]

Both these workers and the 50 who remained in the drab workroom increased their productivity, probably as a result of the interest taken by researchers in the work of both groups during the study.

我不懂上面這一句,還請有人可以解釋這一句,被搞混了

100各工人分成2組,50人在彩色房,50人在單調房,這2各組都在增加生產力,可能是因為這2組的人都是有興趣在工作.

[訪客]

so ga.....
Thanks!!!

[dibert8]

Both these workers and the 50 who remained in the drab workroom increased their productivity, probably as a result of the interest taken by researchers in the work of both groups during the study.
這些工人,和留在褐色廠房的50名工人的生產力都增加了,可能是因為研究過程中研究人員對這兩組作用的關注所導致(i.e. 研究人員求功心切,對兩組的成效過分期待;這樣對研究結果的期待,反而讓兩組實驗分不出結果)

[dibert8]

關於顏色對生產力的影響,我們可以想像,那些研究人員想看到的是兩組在不同色調的廠房作業的工人,會出現不同的生產力.留在原來褐色系廠房作業的工人應該不會有生產力的變化,也就是應該會維持原有的生產力,這是所謂的"對照組".另一組被分到亮色系廠房作業的工人應該會出現不同的生產力,無論增加或減少,這是"實驗組".但出奇意表地,對照組和實驗組的生產力都增加.作者提供解釋,題目問為什麼解釋不對?
答案是"另有它因":研究人員沒有考慮到廠房容量會導致對生產力的影響. (B)

[dibert8]

生產力(productivity) = 每人單位時間的生產量 (units/hr/person)