... firms. A firm is an aggregation of all establishments owned by a parent company. 7 An Analysis of Small Business and Jobs by Brian Headd Office of Advocacy ... developed within the Small Business Administration, Office of Advocacy, and contains information and analysis that was reviewed and edited by officials of the Office of Advocacy. However, the ... http://papers.nber.org/papers/4492, 1993. Headd, Brian and Bruce Kirchhoff, “The growth, decline and survival of small businesses: An exploratory study of life cycles,” Journal of Small Business Management, pp. 531-550,...