In one experiment, college men were injected with epinephrine before spending time with either a joyful or an irritated person. the results of this experiment support the idea that:

How does the principle of federalism affect the u.s. government? a. it guarantees that the united states will always be a representative democracy b. it ensures that the state governments have greater authority that the federal government c. it creates both separate and overlapping powers for the federal and state governments d.it divides the federal and state governments into three branches