BACKGROUND The majority of studies on concussion in the National Football League (NFL) focus on testing, evaluation, and outcomes. Meanwhile, there is a paucity of research on how a team's style of play influences the risk of concussion. HYPOTHESIS Style of play, such as offensive and defensive strategies, is associated with the rate of concussions in the NFL. STUDY DESIGN Descriptive epide...

As advertised in its subtitle, Terence Cuneo’s rich new book, The Normative Web, puts forth an argument for moral realism. Moral realism, Cuneo argues, is on a par with epistemic realism—roughly, the view that there are genuine epistemic facts, facts such as that it is reasonable to believe that astrology is false. These two realist doctrines stand or fall together. But epistemic realism is tru...

How perceived realism in a video game contributes to game enjoyment and engagement is a theoretically important and practically significant question. The conceptualization and operationalization of perceived realism in previous video game studies vary greatly, particularly regarding the dimensions of perceived graphic realism and perceived external realism. The authors argue that it is importan...

Let G be a simple graph with vertex set V (G). A non-empty set S ⊆ V (G) is a global strong offensive alliance if for every vertex v in V (G)−S, a strict majority of its closed neighborhood is in S. The global strong offensive alliance number γô(G) is the minimum cardinality of a global strong offensive alliance of G. We show that if G is a connected bipartite graph of order at least three, the...

The purpose of this study was to develop a laboratory analogue for the study of peer sexual harassment, and to examine person and situational factors associated with male on female peer sexual harassment. One hundred twenty-two male participants were given the opportunity to tell jokes to a female confederate from a joke list that included sexually offensive jokes, as well as other types of jok...

A baseball team's offensive prowess is a function of two types of abilities: batting and baserunning. While each has been studied extensively in isolation, the effects of their interaction is not well understood. We model offensive output as a scalar function f of an individual player's batting and baserunning profile z. Each of these profiles is in turn estimated from Retrosheet data using hei...