Billy has trouble sitting still in class, so his teacher implements a program in which she praises billy for staying in his seat. billy's sitting behavior increases, and the teacher concludes her praise was responsible. the teacher does not realize billy has started taking medication that causes fatigue. the medication would be an example of a(n) variable.

Martin, a 32-year-old human relations administrator at a university, believes that all professors over age 50 are incapable of learning the new educational technologies and are content to keep presenting their same "tired, boring" lectures. he often expresses these views to other administrators and does not encourage any of the "older" faculty members to attend professional development meetings related to new teaching approaches nor does he suggest that the university send them to any of the technology conferences. martin is exhibiting

What is one reason why so many corporations prefer to incorporate in the state of delaware?

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