Examinando por Autor "Lerner, Daniel"

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    Entrepreneurship and attention deficit/hyperactivity disorder: a large-scale study involving the clinical condition of ADHD
    (Springer New York LLC, 2019-08-15) Lerner, Daniel; Verheul, Ingrid; Thurik, Roy
    A growing conversation has emerged linking ostensibly dark or pathological individual-level characteristics to entrepreneurship. Attention deficit/hyperactivity disorder (ADHD) is among the most central and emblematic. Recent studies have made great strides—articulating the theoretical relevance of ADHD-type behavior in entrepreneurship and suggesting a positive link consistent with narratives in the popular press. However, quantitative studies have yet to empirically examine ADHD in line with its theoretical roots and definition—as a clinical disorder. The present paper contributes by providing a theoretically–empirically aligned test of the connection between the condition of ADHD and entrepreneurial intention and action. Based on a large-scale data collection effort (N = 9869) and cross-sectional methodology, the results find a positive connection between clinical ADHD and entrepreneurial intentions as well as entrepreneurial action. This grounds prior research on ADHD and entrepreneurship, indicating that individuals with ADHD are indeed more likely to not just espouse entrepreneurial intentions, but also to initiate business venturing. Considering the design, it suggests a self-selection toward entrepreneurship in individuals with ADHD (before potentially being a choice of last resort).
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    Risky business: linking toxoplasma gondii infection and entrepreneurship behaviours across individuals and countries
    (Royal Society Publishing, 2018-07-25) Johnson, Stefanie K. ; Fitza, Markus ; Lerner, Daniel; Calhoun, Dana M.; Beldon, Marissa; Chan, Elsa ; Johnson, Pieter
    Disciplines such as business and economics often rely on the assumption of rationality when explaining complex human behaviours. However, growing evidence suggests that behaviour may concurrently be influenced by infectious microorganisms. The protozoan Toxoplasma gondii infects an estimated 2 billion people worldwide and has been linked to behavioural alterations in humans and other vertebrates. Here we integrate primary data from college students and business professionals with national-level information on cultural attitudes towards business to test the hypothesis that T. gondii infection influences individual- as well as societal-scale entrepreneurship activities. Using a saliva-based assay, we found that students (n = 1495) who tested IgG positive for T. gondii exposure were 1.4× more likely to major in business and 1.7× more likely to have an emphasis in 'management and entrepreneurship' over other business-related emphases. Among professionals attending entrepreneurship events, T. gondii-positive individuals were 1.8× more likely to have started their own business compared with other attendees (n = 197). Finally, after synthesizing and combining country-level databases on T. gondii infection from the past 25 years with the Global Entrepreneurship Monitor of entrepreneurial activity, we found that infection prevalence was a consistent, positive predictor of entrepreneurial activity and intentions at the national scale, regardless of whether previously identified economic covariates were included. Nations with higher infection also had a lower fraction of respondents citing 'fear of failure' in inhibiting new business ventures. While correlational, these results highlight the linkage between parasitic infection and complex human behaviours, including those relevant to business, entrepreneurship and economic productivity.