An appraisal of the validity of the factor loadings employed in the construction of the primary social attitude scales

In this article the authors examine the effect of including alternate test forms in a factor matrix upon the validity of the resultant factor loadings, finding that in this particular instance the effect is negligible. Comparisons of the factor loadings derived from matrices in which only one of the alternate test forms is included with those in which both forms are included reveal practically no difference in the magnitude of either the original or rotated factor loadings, or in that of the computed communalities.     

The futures of physicians: Agency and autonomy reconsidered

The corporatization of U.S. health care has directed cost containment efforts toward scrutinizing the clinical decisions of physicians. This stimulated a variety of new utilization management interventions, particularly in hospital and managed care settings. Recent changes in fee-for-service medicine and physicians' traditional agency relationships with patients, purchasers, and insurers are examined here. New information systems monitoring of physician ordering behavior has already begun to impact on physician autonomy and the relationship of physicians to provider organizations in both for-profit and ‘not-for-profit’ sectors. As managed care practice settings proliferate, serious ethical questions will be raised about agency relationships with patients. This article examines health system dynamics altering the historical agency relationship between the physician and patient and eroding the traditional autonomy of the medical profession in the United States. The corporatization of medicine and the accompanying information systems monitoring of physician productivity is seen to account of such change, now posing serious ethical dilemmas.     

Do humans integrate routes into a cognitive map? Map- versus landmark-based navigation of novel shortcuts

Do humans integrate experience on specific routes into metric survey knowledge of the environment, or do they depend on a simpler strategy of landmark navigation? The authors tested this question using a novel shortcut paradigm during walking in a virtual environment. The authors find that participants could not take successful shortcuts in a desert world but could do so with dispersed landmarks in a forest. On catch trials, participants were drawn toward the displaced landmarks whether the landmarks were clustered near the target location or along the shortcut route. However, when landmarks appeared unreliable, participants fell back on coarse survey knowledge. Like honeybees (F. C. Dyer, 1991), humans do not appear to derive accurate cognitive maps from path integration to guide navigation but, instead, depend on landmarks when they are available.     

Social Anxiety and Attention away from Emotional Faces

A substantial literature indicates that anxiety is often associated with selective attention to threat cues. Socially anxious individuals are excessively concerned about negative evaluation by others. One might therefore predict that high social anxiety would be associated with selective attention to negative facial expressions. On the other hand, some recent models have suggested that social anxiety may be associated with reduced processing of external social cues. A modified dot-probe task was used to investigate face attention. High and low socially anxious individuals were presented with pairs of pictures, consisting of a face (positive, neutral, or negative) and a household object, under conditions of social-evaluative threat or no threat. The results indicated that, compared to low socially anxious individuals, high socially anxious individuals show an attentional bias away from emotional (positive and negative) faces but this effect is only observed under conditions of social-evaluative threat. Theoretical and clinical implications of the results are discussed.