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This article reviews methodological and analytic approaches and impact evidence for understanding the mechanisms of effects of early childhood interventions, including delinquency and violence prevention. Illustrations from longitudinal studies of preschool preventive interventions are provided. We restrict our attention to preventive interventions for children from birth to age 5, including evidence from the Chicago Longitudinal Study (CLS), which investigates the impact of an established school-based early childhood intervention. Frameworks and evidence will be organized according to the Five-Hypothesis Model (5HM), which postulates that a variety of early childhood interventions impact later well-being through the promotion of cognitive and scholastic advantages, motivational advantages, social adjustment, family support behaviors, and school supports. Recommendations are made for advancing confirmatory approaches for identifying the most effective prevention programs using identification of generative mechanisms as a major methodological criterion. [ABSTRACT FROM AUTHOR]

Economists and criminologists have long tried to establish linkages between job markets and crime. Most prior research, however, was across large areas (e.g., states, metropolitan areas) or across time. This research focuses on examining thevariation of job markets within a city(i.e., Chicago) and whether it is related to the spatial pattern of crime (i.e., homicide). The job market condition is measured by job accessibility, an index computed by a Geographic Information System (GIS) method. Multivariate regressions, controlling for other socioeconomic covariates, are used to analyze the relationship between job access and homicide rates. Considering problems with analysis of rare events such as homicide in small populations, this research constructs various levels of geographic areas from census tracts to generate more stable homicide rates with larger base populations. In particular, a spatial clustering method based on the scale-space theory is used to merge adjacent tracts of similar attributes into new geographic areas. The study shows an inverse relationship between job accessibility and homicide rates across census tracts and the newly-constructed geographic areas in Chicago. [ABSTRACT FROM AUTHOR]

Waves of collective mobilization, when participation increases rapidly and expectations shift dramatically, pose an important puzzle for social science. Such waves, I argue, can only be explained by an endogenous process of “positive feedback.” This article identifies two distinct mechanisms – interdependence and inspiration – that generate positive feedback in collective mobilization. It also provides a detailed analysis of one episode: the wave of strikes that swept American cities in May 1886. Although historians and sociologists have suggested various precipitants, these do not account for the magnitude of the upsurge. Focusing on events in Chicago during the months before May, the article provides quantitative and qualitative evidence for positive feedback. [ABSTRACT FROM AUTHOR]

This article describes the contemporary appeal of the Chicago sociology perspective in France, and analyzes the bases of its attraction. Old Chicago sociology/anthropology was a heady and fruitful conjoining of ethnography, urban ecology and geography, interactionist social psychology, and pragmatist epistemology. Using the vocabulary of science, it spoke of the city of Chicago as its laboratory, but what this meant was that its students were exhorted to exit the library in order to roam, observe, and undertake what then were termed case studies and today, urban ethnography. The laboratory was particularly exciting because of the growth in the population in Chicago, Illinois. Immigrants had been flooding the U.S. and its urban centers throughout the late 19th and early 20th century, and Chicago was a nodal point. Within Europe of the period there had also been migrations on a lesser yet also significant scale, especially from the east to the west. In France, Europe, an throughout the world, an intense process of urbanization has been occurring. The challenge has been how to understand and describe the processes and their consequences, other than being publicly appalled. Jammed side by side in these immense cities are clusters and communities of families and peoples differing in languages, religions, ethnic-cultural origins, and social race.

This article takes up the discussion recently stimulated through the volume, A Second Chicago School? That book's connecting postwar Chicago sociology with the "Chicago approach" of mainly the 1910s to 1930s is extended, going back as far as the turn of the twentieth century and also forward to the 1990s, with a view endorsing Simmelian interactionism as opposed to Spencerian utilitarianism. Albion Small, first Chairman of the Chicago Department, introduced a Simmelian sociology to the U.S., and the question arises to what extent this legacy is being realized until today. Using Anselm Strauss as a case in point, the article has two main parts. Part One recapitulates various attempts at understanding the phases and realms of Chicago sociology. The focus is not only on the various "Chicago Schools" that may be separated, but also the differences in the work of three scholars who often are grouped together under the label of Chicago, namely Herbert Blumer, Robert Park, and Everett Hughes. Part Two recollects Strauss's intellectual biography, as life of a scholar determined to make a contribution to modern sociology, in the name of "Chicago interactionism." Strauss's work, however, came to endorse Spencerian-type utilitarianism more than Simmelian-type interactionism from the middle 1960s onwards--thereby joining in with anti-structural functionalism tendencies in American sociology.(n1) [ABSTRACT FROM AUTHOR]