In this paper, the authors reconcile and extend previous results on the collectively optimal taxation of international investment income. The 'weighted average' rule of T. Horst (1980), for example, is shown to rest on unattractive assumptions on the set of instruments available, ruling out any...

Organizational activity, information and communication technology work, and research and development (R&D) can be classified as work that creates intangible capital. We measure the returns to these three types of labor input by accounting for differences in their productivity compared with other...