A biologist hypothesizes that keeping mice on a restricted diet with minimal calories will increase their aggression.The biologist designs an experiment in which 100 mice are to be housed in individual cages under similar conditions and diets.He then plans to place pairs of mice together in the same cage to observe their interactions.What is true about this study design?
A) The study is well designed since it uses a large sample of mice.
B) The study is not controlled.
C) The study includes too many variables.
D) The study is flawed because the hypothesis is not testable.
E) The study is unnecessary because the results are obvious.

Question

Quizplus · Accepted Answer

The study is not controlled. The biologist did not specify the type of diet or the number of calories the mice will receive. Additionally, the study does not have a control group to compare the behavior of mice on a regular diet to those on a restricted diet. Without a control group, the researcher cannot identify if changes in aggression are due to the restricted diet or another variable.

A Biologist Hypothesizes That Keeping Mice on a Restricted Diet