The dynamics of combining self-employment and employment

This study examines the extent to which wage-earning workers are simultaneously self-employed, a phenomenon not thoroughly investigated in earlier studies. We use matched employee-employer databases to present a detailed investigation of self-employment patterns within the post industrial sectors in Sweden from 1990 to 2002. We find that persons that combine self-employment with waged work constitute a majority of the total number of self-employed, and that most people enter self-employment by engaging first in combinatory work, indicating that the decision to move to self-employment is more complex than characterized in earlier research.Self-employment; income dynamics; entrepreneurship

Endogenous growth through knowledge spillovers in entrepreneurship: An empirical test

Endogenous growth theory is based on the notion that technological knowledge stimulates growth, yet the micro foundations of this process are rarely investigated and remain obscure. Knowledge spillover theory posits that growth is contingent on the technology dependence of industries, forming the landscape for technology entrepreneurs to launch and grow new ventures. We investigate these theoretical contingencies of endogenous growth with two research questions at two levels of analysis: First, do industries with a greater need for new technology-based entrepreneurship grow disproportionately faster than other industries? Second, do the knowledge spillover effects foster the growth of new technology based firms contingent on certain industry structures? These questions are examined empirically, using a comprehensive employee-employer data set on the science and technology labor force in Sweden from 1995 to 2002.Endogenous Growth; Entrepreneurship; Industry Evolution

Hybrid Entrepreneurship

In contrast to previous efforts to model the individual’s movement from wage work into entrepreneurship, we consider that individuals might transition incrementally by retaining their wage job while entering into self-employment. We show that these hybrid entrepreneurs represent a significant share of all entrepreneurial activity. Theoretical arguments are proposed to suggest why hybrid entrants are distinct from self-employment entrants, and why hybrid entry may facilitate subsequent entry into full self-employment. We demonstrate that there are significant theoretical and empirical consequences for this group and our understanding of self-employment entry and labor market dynamics. Using matched employee-employer data over eight years, we test the model on a population of Swedish wage earners in the knowledge-intensive sector.Hybrid entrepreneurship; Self-employment; Labour market dynamics; Transition determinants; Employee-employer data

Tillväxt i små och nya - och något större och mognare - företag

Syftet med denna uppsats är att försöka sammanfatta viktiga lärdomar från den forskning om framför allt små, unga och ägarledda företags tillväxt, som vi båda har bedrivit under mer än femton år. I olika projekt har vi med olika metoder belyst olika frågor om tillväxt hos företag i olika miljöer och utvecklingsstadier. Med hjälp av en modell försöker vi länka samman de inblickar vi fått till en meningsfull helhet. På vägen dit kommer vi att behandla vad som leder till tillväxt och hur själva tillväxten går till, samt också beröra de upplevda och faktiska konsekvenser tillväxt leder till.företagstillväxt; entreprenörskap; företagsstorlek; företagsålder; tillväxt

A longitudinal project of new venture teamwork and outcomes

This chapter present a research project dedicated to better understand how new venture teams work together to achieve desired outcomes. Teams, as opposed to an individual, start a majority of all innovative new ventures. Yet, little research or theory exists in new venture settings about how members interact with each other over time—teamwork—to produce innovative technologies, products, and services. We believe a systematic study of social and psychological processes that underlie new venture teamwork and venture outcomes is timely and important. Unique features of our research project include: (1) a team level focus on social and psychological processes, to assess relations to proximal (e.g., innovation, first sales and team satisfaction), and distal value creation outcomes (e.g., sales growth, raised capital and profits). (2) Combined qualitative and quantitative research methodologies to provide both theory building and theory testing for the relations of interest. (3) A time-sequential design with data collection every three months over one year to allow us to investigate the relations of interest for new ventures

Genome-wide association analyses identify new Brugada syndrome risk loci and highlight a new mechanism of sodium channel regulation in disease susceptibility.

Brugada syndrome (BrS) is a cardiac arrhythmia disorder associated with sudden death in young adults. With the exception of SCN5A, encoding the cardiac sodium channel Na1.5, susceptibility genes remain largely unknown. Here we performed a genome-wide association meta-analysis comprising 2,820 unrelated cases with BrS and 10,001 controls, and identified 21 association signals at 12 loci (10 new). Single nucleotide polymorphism (SNP)-heritability estimates indicate a strong polygenic influence. Polygenic risk score analyses based on the 21 susceptibility variants demonstrate varying cumulative contribution of common risk alleles among different patient subgroups, as well as genetic associations with cardiac electrical traits and disorders in the general population. The predominance of cardiac transcription factor loci indicates that transcriptional regulation is a key feature of BrS pathogenesis. Furthermore, functional studies conducted on MAPRE2, encoding the microtubule plus-end binding protein EB2, point to microtubule-related trafficking effects on Na1.5 expression as a new underlying molecular mechanism. Taken together, these findings broaden our understanding of the genetic architecture of BrS and provide new insights into its molecular underpinnings

When the dust has settled: A final note on replication

Honing and Samuelsson have in a two papers (2014, 2015) criticized the Delmar and Shane (2003) paper on several grounds: The data are difficult to replicate; conflicting results with another paper using the same data and similar independent variable; the inability to fully rule out reversed causality because of tied events; and what is the choice of relevant dependent variable. I also commented on several of these issues in an earlier response (Delmar, 2015) and an informative commentary was also made by Davidsson (2015). To bring some final clarity, I will here address the issue of replication and the issue of conflicting results by explaining how Delmar and Shane constructed their data set

A Response to Honig and Samuelsson (2014)

Honig and Samuelsson (2014) recently published an article in this outlet criticizing “Does business planning facilitate the development of new ventures? “ a paper I wrote with Scott Shane nearly 15 years ago. They claim that their effort adds to the discussion of (a) the merits of business planning, (b) data replication and extension, (c) sample selection bias, (d) evaluation of normative research and (e) publication standards. However, most of the claims they make are incorrect