It has been reported that the effectiveness of arthroscopic procedures in terms of preventing recurrent dislocation has not matched that from open techniques. Also little is known about how these knots behave when exposed to physiological loading following repair. This study presents the development of a practical tool to allow surgeons to test the quality of their arthroscopic knots and allow ...

In a recent issue of the Journal, Duncan and Rees (1) conclude that ‘‘reexamination’’ of data from the National Longitudinal Study of Adolescent Health indicates that there is no association between smoking and depressive symptoms for US adolescents. Their study was based in large part on our prior work, which identified such an association (2). Although we are not challenging the validity of t...

Many modern public health practitioners become drawn to the origins of public health as a discipline, and turn their attention first to sources of local history within their jurisdiction. It was in this way that John Ashton’s curiosity was aroused, and he brought the story of William Henry Duncan to popular attention, inaugurating the Duncan Memorial Lecture Series. In fact, the career of John ...

Multiple attributes of a visual array are often more efficiently processed when they are attributes of a single object than when they are attributes of different objects—a pattern reflecting the limitations of object attention. This study used psychophysical methods to evaluate the object attention limitations in the report of attributes (orientation and phase) computed early in visual analysis...

A detailed theoretical analysis is presented of what five utility representations – subjective expected utility (SEU), rank-dependent (cumulative or Choquet) utility (RDU), gains decomposition utility (GDU), rank weighted utility (RWU), and a configural-weight model (TAX) that we show to be equivalent to RWU – say about a series of independence properties, many of which were suggested by M. H. ...