Aresearcher is interested in the effects of a new drug for treating anxiety. the researcher decides to study this phenomenon in rats by conditioning in them the fear of a high-pitched noise and then testing the rats' reactions with and without the drug. this is an example of a(n):
a. developmental experiments. b. correlational experiments. c. analogue experiments. d. quasi-experiments.

1. in recent lessons, you have been reading about some of the challenges and issues that the united states faces in both foreign and domestic affairs. review your notes from chapters 39–41 and make a list of these issues. make sure you review the looking to the future and charting future courses sheets from the divisions and new realities lessons. of all the challenges and issues that the united states faces, which do you believe is the most serious in terms of foreign affairs and which in terms of domestic affairs? choose one of each and write an essay that describes each issue and explains why you believe it is the most serious. there is no right or wrong answer—you will be graded, in part, on how well you make the argument that each issue you chose is the most serious. refer to the rubric and scoring instructions on the next page to see how your teacher will grade this assignment.