This paper reconsiders the comparison between hierarchical contests and single-stage contests. A condition is given that characterizes whether and when the aggregate equilibrium payoff of contestants is higher in the single-stage contest, and when the single-stage contest is more likely to award the prize to the contestant who values it most highly. The outcome depends on inter-and intra-group ...

SOME WORKERS, with great enthusiasm about the clinical value of vectorcardio-grams, may, after reading this article, believe it should be classified under some heading other than Clinical Progress, but the writer hopes that the discussion will at least point out clearly the relationship between ordinary electrocardiograms and vectorcardiograms and some of the problems relating to the registrati...