Browsing by Author "Aronson, Brian"

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    Immigrants in the one percent: The national origin of top wealth owners.
    (PLoS One, 2017) Keister, Lisa A; Aronson, Brian
    BACKGROUND: Economic inequality in the United States is extreme, but little is known about the national origin of affluent households. Households in the top one percent by total wealth own vastly disproportionate quantities of household assets and have correspondingly high levels of economic, social, and political influence. The overrepresentation of white natives (i.e., those born in the U.S.) among high-wealth households is well-documented, but changing migration dynamics suggest that a growing portion of top households may be immigrants. METHODS: Because no single survey dataset contains top wealth holders and data about country of origin, this paper uses two publicly-available data sets: the Survey of Consumer Finances (SCF) and the Survey of Income and Program Participation (SIPP). Multiple imputation is used to impute country of birth from the SIPP into the SCF. Descriptive statistics are used to demonstrate reliability of the method, to estimate the prevalence of immigrants among top wealth holders, and to document patterns of asset ownership among affluent immigrants. RESULTS: Significant numbers of top wealth holders who are usually classified as white natives may be immigrants. Many top wealth holders appear to be European and Canadian immigrants, and increasing numbers of top wealth holders are likely from Asia and Latin America as well. Results suggest that of those in the top one percent of wealth holders, approximately 3% are European and Canadian immigrants, .5% are from Mexico or Cuban, and 1.7% are from Asia (especially Hong Kong, Taiwan, Mainland China, and India). Ownership of key assets varies considerably across affluent immigrant groups. CONCLUSION: Although the percentage of top wealth holders who are immigrants is relatively small, these percentages represent large numbers of households with considerable resources and corresponding social and political influence. Evidence that the propensity to allocate wealth to real and financial assets varies across immigrant groups suggests that wealth ownership is more global than previous research suggests and that immigrant groups are likely to become more prevalent in top wealth positions in the U.S. As the representation of immigrants in top wealth positions grows, their economic, social, and political influence is likely to increase as well.
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    Networks of Competition: The Foundation of Market Structure and Competitive Constraint in Organizational Ecosystems
    (2019) Aronson, Brian

    Research in organizational ecology demonstrates that an organization’s competitive position within its market is highly associated with its survival chances, and that patterns of competitive constraint among organizations influence how markets evolve. However, the literature’s conceptualization of market structure is relatively coarse and static; it does not explore how individual organizations’ competitive positions shift or how market offerings change over relatively short intervals of time. In this study, I use social network analysis to study the structure of organizations’ competitive relationships directly. I examine both how changes in the structure of an organization’s competitive environment influence its survival chances, and how the structure of organizations’ competitive relationships affect the stability of market offerings. With a combination of a large crowd-sourced restaurant dataset from Yelp.com and census tract information from the American Community Survey (Census Bureau, 2009; Yelp, 2019), I apply methods from social network analysis, text analysis, and geographic information systems to track how restaurants’ competitive relationships change over time and space, and to study how these changes influence restaurants’ survival chances and overall market stability. This study provides evidence for new mechanisms of competitive constraint among organizations (niche centrality and niche compression) and new mechanisms of market stability (niche redundancy), offers a new theoretic framework for studying market structure and organizational evolution, and has critical implications for theory in the field of organizational ecology.