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In a study of the effect of color on productivity, 50 of [#permalink]
06 Aug 2003, 08:01
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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, proba-
bly 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 manufac-
turing 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
(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
Because B points to the fact that moving 50 workers away to another room, irrespective of the color of the room, gave both groups adequete space to work. Therefore, the productivity increase could be because of this reason.
Take a look at the stimulus. We're looking for a "weaken"
What we're saying is that regardless of the room, productivity increased. Productivity increased because of the interest from researchers.
A: shows that there was no difference in the type of work between the 2 rooms. This is consistent with the argument, does not strengthen or weaken.
C: sample set was the same. again consistent with the finding.
D: same as above.
E: color did not seem to have much effect on the performance. this is consistent with the finding
B is clear because it shows provides a reason for productivity to have increased in both rooms. it also shows that this reason has nothing to do with the research group's interest. Winner!