Aidan has been diagnosed with bipolar disorder. aidan's identical twin has a chance that he will also experience bipolar disorder at some point in his life.

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?

An refers to a specific factor that has a range of possible values

Give three examples of distinctive characteristics of conformity to typical american culture