Pls help these are all my points I’m not that smart and I need at least in an hour it’s 11:29 where I am 4. Does this primary source reinforce or refute the data in the map presented above? Cite
relevant examples from the text to support your claims.

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?