Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The authors examine a firm's decision either to produce an essential input itself or to hire a subcontractor to produce the input. The authors focus on how this decision is affected by technological change in the industry. In general, cost-reducing technological change leads the firm to produce the input itself more often. The firm's calculus is shown to depend on whether the subcontractor's skills are idiosyncratic or transferable. In the latter case, technological progress can even be detrimental to the firm and to society as a whole. Copyright 1991 by American Economic Association.