•Practice FRQ
•In
a memory study, rats were randomly assigned to one of three groups. In group 1,
the rats were injected with the drug scopolamine, which is known to block
acetylcholine (Ach) on the post synaptic neurons. In group 2, the rats were
injected with physostigmine, a drug that increases the amount of acetylcholine
(Ach). In group 3, the rats received no injection. All of the rats were put
through a maze.
•Results:
•Group
1 took the longest amount of time to complete the maze
•Group
2 took the shortest amount of time to complete the maze
•Group
3 had completion times between those of group 1 and 2
•(Martinez
and Kesner,
1991)
•What
is the operational definition of the dependent variable?
•What
type of descriptive statistic could the researchers include regarding the
dependent variable?
•What
could be concluded if the results were statistically significant?
•Explain
a control variable in this study.
•Indicate
a strength of the research design used by Martinez and Kesner,
1991.
•Explain
a conclusion that can be made from the results of the study.