Plain English Summary David B. Audretsch was named a 2021 Clarivate Citation Laureate, together with four other colleagues in the field of economics. A Clarivate Citation Laureate is recognized as having a research record and impact commensurate with that deemed to be 'of Nobel class.' This...

Plain English Summary Publishing entrepreneurship research is not just important but challenging. Longstanding experts in the field can provide helpful advice. As borders between academic fields blur, research fields are increasingly global in their perspective, knowledge, and findings, thus...

Investigating the role of diversification in the firm growth process, we build on Penrose’s (The theory of the growth of the firm. Oxford University Press, Oxford, <CitationRef CitationID="CR30">1959</CitationRef>) Theory of the Growth of the Firm to formulate hypotheses about growth of employment, assets and sales in the years before,...</citationref>

We focus on the relationship between age and diversification patterns of German machine tool manufacturers in the post-war era. We distinguish between ‘minor diversification’ (adding a new product variation within a familiar submarket) and ‘major diversification’ (expanding the product...

Considerable debate surrounds the concept of entrepreneurial opportunities. This paper approaches the opportunity concept from an evolutionary market process perspective. It argues that new opportunities for entrepreneurial activity frequently emerge as by-products of market competition. Agents...