When 3-year-old aaron takes his sister's doll away, she begins to cry. after being scolded by his father, aaron insists that he didn't do anything to make his sister cry. aaron's inability to understand why his sister is upset is an example of

What did justice brown’s verdict in plessy v. ferguson state?

Which of the following best describes how the articles of confederation divided government power?

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?