Making a case for an interface between quasi-experimental designs and social impact analyses

This paper describes the community impact assessment conducted after Concorde operations were initiated at Dulles International Airport. Problems in the design and conduct of this study that make causal interpretations implausible are discussed. The present authors report an improved design to eliminate these problems as well as increase the external validity of the results. A discussion of how the careful implementation of quasiexperimental designs allows for treatment-related causal interpretations to be made is also included. Finally, it is emphasized that practical application of these data make it possible to improve the implementation of the treatment in communities receiving it at a later date.     

Statistical power of the social network autocorrelation model

The network autocorrelation model has become an increasingly popular tool for conducting social network analysis. More and more researchers, however, have documented evidence of a systematic negative bias in the estimation of the network effect (ρ). In this paper, we take a different approach to the problem by investigating conditions under which, despite the underestimation bias, a network effect can still be detected by the network autocorrelation model. Using simulations, we find that moderately-sized network effects (e.g., ρ = .3) are still often detectable in modest-sized networks (i.e., 40 or more nodes). Analyses reveal that statistical power is primarily a nonlinear function of network effect size (ρ) and network size (N), although both of these factors can interact with network density and network structure to impair power under certain rare conditions. We conclude by discussing implications of these findings and guidelines for users of the autocorrelation model.     

The desire for impact

This paper explores the meaning and implications of the desire by workers for impact. We find that this impact motive can make a firm in a competitive labor market face an upward-sloping supply curve of labor, lead workers with the same characteristics but at different firms to earn different wages, may alleviate the hold-up problem in firm-specific investment, can make it profitable for an employer to give workers autonomy in effort or task choice, and can propagate shocks to unemployment.     

Day versus residential treatment for juvenile offenders: the impact of program evaluation

A case study of a public service department's program evaluation provides insights into the social policy-making process as well as findings on the effectiveness of two different forms of treatment for the same social problem.     

The power of the individual's story.

A full-time chaplain to transplant patients and their families cautions that the natural sympathy inspired by the plight of individual transplant candidates may lead the public to neglect the less dramatic medical needs of the masses of poor and uninsured.     

Illuminating crime. The impact of street lighting on calls for police service.

This study reports on an evaluation of the effects of street lights on crime in several Indianapolis neighborhoods. Crime was measured in terms of calls for police service (CFS). Using a quasiexperimental design, we performed analyses on four multiblock areas, three intersections, and two aggregated address groups. Two control areas were matched to two multiblock areas that received enhanced lighting. Of the nine target areas, six showed evidence of lower CFS volumes after more lighting. We analyzed the mean weekly CFS in the pre- and postinstallation periods. Two lighted areas had a lower mean weekly CFS after installation. The more illuminated target area experienced a greater reduction in average CFS for property and miscellaneous crimes than did the control area.     

Words of power: The power of words

Conclusion The original hapiness of words (Foucault) is gone ; there are no innocent languages (Barthes) anymore. All are related to social experiences, because a language originates in and has its primary reference to the everyday life. (Berger and Luckman, 1967, p.38) Any language is related to a given society, and both language and society are shaped by history. Obviously, American and French histories have been quite different.     

The Statistical Evaluation of Social Network Dynamics

A class of statistical models is proposed for longitudinal network data. The dependent variable is the changing (or evolving) relation network, represented by two or more observations of a directed graph with a fixed set of actors. The network evolution is modeled as the consequence of the actors making new choices, or withdrawing existing choices, on the basis of functions, with fixed and random components, that the actors try to maximize. Individual and dyadic exogenous variables can be used as covariates. The change in the network is modeled as the stochastic result of network effects (reciprocity, transitivity, etc.) and these covariates. The existing network structure is a dynamic constraint for the evolution of the structure itself. The models are continuous-time Markov chain models that can be implemented as simulation models. The model parameters are estimated from observed data. For estimating and testing these models, statistical procedures are proposed that are based on the method of moments. The statistical procedures are implemented using a stochastic approximation algorithm based on computer simulations of the network evolution process.     

The power of Babel

In this paper, I seek to determine the extent to which a particular form of information—the published book review—is helpful in public policy discussion. In pursuing this question a number of reviews dealing with recent critiques of American education are analyzed. The works of Bloom, D’Souza, Moe et al.—studies funded by ideologically conservative foundations—offer a seemingly respectable underpinning for the efforts to eliminate all aspects of affirmative action in higher education, while installing “choice” in the lower grades. Thoughtful critiques of these jeremiad-like works are all but ignored by the mainstream media. The review sources themselves, conservative, liberal, and academic, do follow a predictable pattern. However, an analysis of the totality of reviews considered reveals a cacophony of voices, many as partisan as the authors under review. It is argued that the original works, in substance and tone, along with the secondary analysis available to the interested public are unlikely to promote a thoughtful “democratic-friendly” dialogue. To this extent, the public policy is likely to be ill-informed. Present funding sources available to many in the social sciences suggest that an improvement in this situation will not come easily.     

The legacy of stress research. The course and the impact of this journal

The Journal of Health and Social Behavior (JHSB) is examined to determine its relative stature and impact in the social science community. We conducted both empirical comparisons of average impact (based on the Social Science Citation Index) and content analysis. Over an 11-year period beginning in 1977, JHSB has maintained an enviable position among sociology journals, ranking significantly higher than the American Journal of Sociology and Social Forces. In addition, it ranks quite favorably when compared with the dominant journals of the allied social science disciplines. The preeminence of the JHSB is attributed to the legacy of stress research that was perceived to dominate this period. Ironically, the recently mandated change in editorial goals eschewing such an identification with stress research has begun to undermine the overall stature of the journal, primarily by reducing the impact of articles on stress that appear in it. We discuss the mechanisms that have influenced the course and the impact of this journal.     

The impact profile approach to policy merit. The case of research grants and the university.

In writings on the theory of valuing, many take the position that impacts on the relevant outcome dimensions should be aggregated to arrive at one summary assessment of program merit. A contrary position is taken here, specifying that the impacts should be kept separate and unweighted and expressed only in their own original measurement scales. All impacts, however, should be portrayed, including those for which no rigorous data analysis has been carried out. It is argued that aggregating, even by the individual stakeholder, is both futile and misleading. An extensive evaluation of the effects of research grants on the university is included as a full-scale illustration of the method. Financial impacts are considered, as well as impacts on faculty and student quality, on university prestige, and on the quality of instruction.     

The impact of family structure on the adjustment of adopted children.

Psychological and academic adjustments were assessed in a group of 130 adopted children (six to 12 years of age) living in five different family constellations: only children, children with younger adopted siblings only, children with younger biological siblings only, children with older adopted siblings only, and children with older biological siblings only. Few differences were found from one cluster to another, suggesting that family structure, while complicating the dynamics of adoptive family life, plays a minor role in adoption adjustment.