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Supplemental Material, sj-pdf-1-isb-10.1177_02662426211055447 for Start-ups��� business model changes during the COVID-19 pandemic: Counteracting adversities and pursuing opportunities by Peter Guckenbiehl and Graciela Corral de Zubielqui in International Small Business Journal: Researching Entrepreneurship

Supplemental Material, sj-pdf-1-isb-10.1177_02662426211055447 for Start-ups��� business model changes during the COVID-19 pandemic: Counteracting adversities and pursuing opportunities by Peter Guckenbiehl and Graciela Corral de Zubielqui in International Small Business Journal: Researching Entrepreneurship

Supporting info item, per2104-sup-0001-Online Appendix for Did Strategic Bombing in the Second World War Lead to ‘German Angst’? A Large–Scale Empirical Test across 89 German Cities by Jokela Markus, Obschonka Martin, Stuetzer Michael, Rentfrow P. Jason, Potter Jeff and Gosling Samuel D. in European Journal of Personality

Free to read on journal website The Industrial Revolution, which brought together large-scale coal-based industries like mining, steel, pottery, and textiles, helped create the foundation of modern society and wealth. At the same time, the early industrial economies that formed in this era were also associated with brutal working and living conditions. Our research, recently accepted by the Journal of Personality and Social Psychology, shows that areas where coal was king may still be feeling the effects.

Recent research has found clear indications of regional differences in the personality traits of the population. Such regional differences may significantly contribute to explaining regional development. We provide an overview of regional differences in entrepreneurial personality traits among the population in Germany. There are a number of highly significant regional differences but the strength of the effects is relatively small. The empirical evidence suggests that the regional differences found are due to selective migration and also to socialization.

Supplemental Material, SPPS755874_suppl_mat for Fear, Populism, and the Geopolitical Landscape: The “Sleeper Effect” of Neurotic Personality Traits on Regional Voting Behavior in the 2016 Brexit and Trump Elections by Martin Obschonka, Michael Stuetzer, Peter J. Rentfrow, Neil Lee, Jeff Potter, and Samuel D. Gosling in Social Psychological and Personality Science

There is increasing interest in the potential of artificial intelligence and Big Data (e.g., generated via social media) to help understand economic outcomes and processes. But can artificial intelligence models, solely based on publicly available Big Data (e.g., language patterns left on social media), reliably identify geographical differences in entrepreneurial personality/culture that are associated with entrepreneurial activity? Using a machine learning model processing 1.5 billion tweets by 5.25 million users, we estimate the Big Five personality traits and an entrepreneurial personality profile for 1,772 U.S. counties. We find that these Twitter-based personality estimates show substantial relationships to county-level entrepreneurship activity, accounting for 20% (entrepreneurial personality profile) and 32% (all Big Five trait as separate predictors in one model) of the variance in local entrepreneurship and are robust to the introduction in the model of conventional economic factors that affect entrepreneurship. We conclude that artificial intelligence methods, analysing publically available social media data, are indeed able to detect entrepreneurial patterns, by measuring territorial differences in entrepreneurial personality/culture that are valid markers of actual entrepreneurial behaviour. More importantly, such social media datasets and artificial intelligence methods are able to deliver similar (or even better) results than studies based on millions of personality tests (self-report studies). Our findings have a wide range of implications for research and practice concerned with entrepreneurial regions and eco-systems, and regional economic outcomes interacting with local culture.

Supplemental material, Online Appendix for Human behaviour and economic growth: A psychocultural perspective on local and regional development by Robert Huggins, Piers Thompson and Martin Obschonka in Environment and Planning A: Economy and Space

This paper seeks to investigate the link between the objective regional opportunity structure (captured by regional data) and individuals’ engagement in different stages in the venture creation process (intention to start a business and engagement in nascent entrepreneurship). We further investigate pathways through which a favourable regional environment could affect entrepreneurial intentions and the propensity to be a nascent entrepreneur. We combine individual level GEM-data for Western Germany with regional level data from the statistical office and use multi-level analysis to test our hypotheses. We find support for our contention that a favourable regional opportunity structure affects entrepreneurial intentions and engagement. As pathways between the region and individual behaviour serve the individual perception of founding opportunities and the individual social capital.