300
In an experiment to test the effects of alcohol on memory, the experimenter gives volka mixed in orange juice to one group of subjects and orange juice with no volka to the other group. She then measures the memory skills of both groups by means of a memory test. In this study, the independent variabel would be ______________.
a) scores on the memory test
b) the presence or absence of volka in the orange juice
c) intelligence
d) a placebo
What is "b" the presence or absence of volka in the orange juice?