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Item type:Publication, The social ecology of intergenerational closure in school class networks. Socio-spatial conditions of parents’ norm generation and their effects on students’ interpersonal conflictsIn this paper, we investigate how protective effects of intergenerational closure correspond with conflict networks in school classes. Taking a multilevel ecological perspective, we also consider networks’ socio-spatial conditions. In a first step, we use ERGMs to analyze the association between parental contact and students’ friendship ties, i.e., intergenerational closure (IC). Then, we utilize spatial regressions to analyze direct and moderating effects of a school’s neighborhood on conflicts in the 135 German class networks (N = 3143 student measurements). In accordance with Coleman’s theoretical notions, we find consistent negative effects of IC on the (standardized) density of the conflict networks. Moreover, we show that IC’s impact is particularly strong in neighborhoods with a relatively high concentration of minorities. The results are in line with our theoretical considerations on multilevel network ecologies and the selective pressure of IC against conflict ties. Practically, our results provide evidence that fostering connections among parents (e.g., by implementing opportunity structures for parents to meet) might help to prevent deviating behavior in schools, especially in neighborhoods with relatively large proportions of ethnic minorities.journal article150 145 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The network of global migration 1990–2013: Using ERGMs to test theories of migration between countriesFor the period 1990–2013, 202 countries are analysed as nodes linked by in- or out-migration of substantial shares of the sending country’s population. The resulting network shows regional, but also “cultural” clustering. Variants of ERGMs are used to determine geographic, demographic, economic, religious, linguistic as well as historical factors of migration between countries. Results are in line with gravity models, theories of global inequality, hegemonic languages and religious homophily, even though not all effects are fully consistent across all models. Moreover, former colonies show higher out-degree and there are strong network-structural effects indicating a hierarchy in attractiveness between countries for unobserved reasons.journal article96 227