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Holdings focus on international politics , foreign relations , foreign policy , economics , sociology , and political science of the respective areas and regions . Dynarski : We currently have a very efficient organization for collecting just about all the information that is necessary to determine aid eligibility : the Internal Revenue Service . We've been dealing with asteroids falling out of the blue : new technologies , the entry of new competitors with no respect for the conventions of the industry , the fragmentation of markets , users with sky-high expectations for information products , and industry economics permanently shifting . Methodology , the faculty is a diverse interactive group of researchers specializing in the evaluative and decision sciences in biostatistics / clinical trials ; epidemiology / population health / health services ; health economics / health policy analysis ; and health measurement . Acheiving a fair process for utilities regulation ( World Institute for Development Economics Research ( UNU / WIDER ) ) A process for achieving a fair process of utilities regulation needs to take into consideration the interest of consumers as well as those of the investors and the government . Recent students have paired Math not only with all the other sciences , but also with Economics , Japanese , Music , Philosophy , Psychology , Religion and Sociology .