[求助]大全-12-16

xirui2000

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.（B）

(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.

这句话没明白,请问为什么选B?谢谢!

apply1

B says that "The drab workroom was designed to provide adequate space for at most 65 workers." so two groups are done in different conditions. -- meaning: besides the color, the more space could be a reason to boost productivity

chinabens

划线那句话我也不是很懂,特别是当中的INTEREST该怎么理解,请NN指教.

luoye1

If B is true -- the drab room only has enough sapce for at most 65 workers, then most likely the productivity increase of both groups simply come from the reduced crowdedness.  This obviously is a better explanation than what the author suggests.