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A dynamic oligopoly model of the cigarette industry is developed to study the responses of firms to various antismoking policies and to estimate the implications for the policy efficacy. The structural parameters are estimated using a combination of micro and macro level data and firms’ optimal price and advertising strategies are solved as a Markov Perfect Nash Equilibrium. The simulation results show that tobacco tax increase reduces both the overall smoking rate and the youth smoking rate, while advertising restrictions may increase the youth smoking rate. Firm’s responses strengthen the impact of antismoking policies in the short run.

Heritability studies attempt to estimate the contribution of genes (vs. environments) to variation in phenotypes (or outcomes of interest) in a given population at a given time. This chapter scrutinizes heritability studies of adverse health phenotypes, emphasizing flaws that have become more glaring in light of recent advances in the life sciences and manifest most visibly in epigenetics.

Drawing on a diverse body of research and critical scholarship, this chapter examines the veracity of methodological and conceptual assumptions of heritability studies.

The chapter argues that heritability studies are futile for two reasons: (1) heritability studies suffer from serious methodological flaws with the overall effect of making estimates inaccurate and likely biased toward inflated heritability, and, more importantly (2) the conceptual (biological) model on which heritability studies depend – that of identifiably separate effects of genes versus the environment on phenotype variance – is unsound. As discussed, contemporary bioscientific work indicates that genes and environments are enmeshed in a complex (bidirectional, interactional), dynamic relationship that defies any attempt to demarcate separate contributions to phenotype variance. Thus, heritability studies attempt the biologically impossible. The emerging research on the importance of microbiota is also discussed, including how the commensal relationship between microbial and human cells further stymies heritability studies.

Understandably, few sociologists have the time or interest to be informed about the methodological and theoretical underpinnings of heritability studies or to keep pace with the incredible advances in genetics and epigenetics over the last several years. The present chapter aims to provide interested scholars with information about heritability and heritability estimates of adverse health outcomes in light of recent advances in the biosciences.

Plus Factors have long played an important role in inferring a price agreement from the totality of the evidence. In response to changes in the case law, economists have proposed two alternative paths for the future of price fixing analysis. This paper evaluates the suggested approaches and recommends retaining the enhanced Plus Factor methodology.

By carefully defining the Plus Factor concept, three key components of the analysis emerge: (1) information on communications associated with the alleged agreement, (2) economic considerations affecting market competition, and (3) characteristics that serve to differentiate explicit from tacit collusion.

Developments rationalizing the Plus Factor concept show promise, as the methodology is not more closely related to economic theory. On the other hand, replacement of the Plus Factor methodology with one focused on market performance seems problematic. By abandoning the Plus Factor concept, the economist loses a key institutional constraint on over-aggressive enforcement.

Until advocates can address the difficulties associated with using performance evidence to identify price fixing, the standard Plus Factor concept appears more appropriate. Thus, antitrust analysts should continue to use the Plus Factor methodology to infer agreements in price fixing investigations, as long as the economic rationalization of the specific Plus Factor is clearly presented.

The paper synthesizes a number of recent contributions to the price fixing literature and addresses key issues of interest to the enforcement community. By providing a critique of the proposed policy shift to use performance evidence to infer price fixing liability, the study serves to justify continued application of the Plus Factor methodology.

Previous research on workplace meetings identified critical design features, leader behaviors, group dynamics, post-meeting actions, and other factors which help determine the effectiveness of the meeting. But as much as the authors acknowledge that meetings may differ from each other, much of the research appears to assume that it is meaningful to talk about “the meeting” as a single, generic entity (most commonly, the regularly scheduled staff or department meeting). In fact, though, there are several common types of meetings which vary among themselves in terms of a number of measurable parameters such as structure, meeting members, meeting leader, timing and duration, and scope. It is a gratuitous assumption that what the authors know about workplace meetings based on one especially common type applies to all workplace meetings. This chapter offers a historical review of previous attempts to classify meeting types; it then overviews several common types which deviate from the standard staff meeting paradigm, including project team meetings, debrief meetings, committee meetings, site-wide meetings, shift change meetings, and crew formation meetings. In comparing these types to the staff meeting, the authors identify some of the critical differences, thereby providing a first step toward a true taxonomy of meetings.