Doctors chase and sanborn are conducting an experiment on the effects of caffeine on memory. participants are randomly assigned to a caffeine or a no-caffeine group; their recall of items on a word list is later assessed. which pair correctly identifies a variable in this experiment?

How does district of columbia v heller relate to federalism

How can changes in technology or consumer demand make it difficult for people to get jobs? by changing the number or kind of jobs available by making it possible for some people to work fewer hours by making it difficult for people to buy what they want by creating a demand for things that are not available

What role did natural resources play in african politics?