B. in what order would a scientist complete these events? renumber the
events in the "correct order" column. (10 points)
original event
order
of
a. step b.
correct
scientific order
method
the scientists thought a certain artificial
sweetener used in foods and soft drinks could
be the cause of changes in mood and sleep
patterns in people who used those products
frequently
the amount of sweetener consumed by
laboratory rats was measured carefully, as was
the amount of a certain chemical in their brains.
this chemical seemed to control behavior in
the rats and was used as an indicator of mood.
these data were entered into a computer.
because human subjects are difficult to study,
laboratory rats were used. one group of
laboratory rats was given the artificial
sweetener, and another group was not. all of
the rats were given an identical diet and living
conditions
when the results were analyzed, the scientists
found the experimental rats' brains had three
times the amount of indicator chemicals that
the control rats brains had. the scientists
reported their findings in several scientific
journals.
scientists at a leading university were
concerned about a new artificial sweetener on
the market. did this sweetener cause side
effects such as changes in mood and other
emotional problems in people who consumed
it?