6. An investment in human capital that consists of learning how to use a firm's specialized computer program is a. general training b. specific training c. likely to be useful to other employers. d. unlikely to cause the worker to be more productive. 7. The private market produces insufficient investments in human capital because: a. There are positive externalities to investments in human capital b. imperfect capital markets prevent some people from investing in human capital even though the ex pected returns exceed the expected costs. c. both (a) and (b) 7d. this statement is incorrect in that the private market produces a socially optimal level of human capital investment