Fifteen years ago, college professors frequently hired undergraduates as research assistants to gather basic information in the library. Today, most professors can get the information themselves using the Internet in less time than it would take to explain what is needed to a research assistant.

a. In the labor market for undergraduate research assistants, has the Internet been a substitutable or complementary technological change?

b. All else equal, what impact has the development of the Internet likely had on the wage and employment level of undergraduate research assistants?

c. Many college professors find that graduate student research assistants are more productive than before because they can use the Internet. All else equal, has the Internet been a substitutable or complementary technological change for graduate student research assistants? What effect would this have on their equilibrium wage and employment level?