Innovation, Market Structure, and Firm Size
检验了大小公司相对创新优势由市场集中度、进入壁垒、行业公司规模构成和创新活动重要性决定的假说，发现大公司在资本密集、集中、高工会化和差异化产品行业有优势，小公司在高创新、高技能劳动力和大公司占比高的行业有优势。
The hypothesis that the relative innovative advantage between large and small firms is determined by market concentration, the extent of entry barriers, the composition of firm size within the industry, and the overall importance of innovation activity is tested. The authors find that large firms tend to have the relative innovative advantage in industries that are capital intensive, concentrated, highly unionized, and produce a differentiated good. The small firms tend to have the relative advantage in industries that are highly innovative, utilize a large component of skilled labor, and tend to be composed of a relatively high proportion of large firms. Copyright 1987 by MIT Press.