The beneficial effects of meprobamate on delayed response performance in the frontal monkey

Previous studies of antagonistic treatments on delayed response performance by frontal monkeys suffer from a logical flaw in that the treatments may also improve the performance of normal monkeys. In a previous study (Gross and Weiskrantz, 1961) we have shown that meprobamate is without effect on delayed response in normal monkeys, but it does severely depress their discrimination performance. In the current study meprobamate is shown to produce a significant improvement in delayed response in each of three frontal monkeys. Nembutal is also effective. Various interpretations of the results are discussed, the view being favoured that the frontal monkey suffers from an excessive and inappropriately ordered intake of sensory information.     

Relationship between egocentrism, alcohol consumption and reasons given for drinking

University students, 86 men and 141 women, completed a questionnaire from which their level of egocentrism, amount of alcohol consumed, and number of reasons for drinking could be estimated. Analysis supported earlier findings that men consume significantly more alcohol than do women. Both men and women who were rated as having high egocentrism scores gave significantly more reasons for drinking than did the women scoring low on egocentrism. Also, there was a significant correlation between egocentrism and reasons for drinking but not between egocentrism and amount consumed. The correlation was higher between the number of reasons given for drinking and the amount of alcohol consumed. Since men scoring high on egocentrism report the highest consumption, while high-scoring women report the lowest consumption, it is concluded that egocentrism plays an indirect role in the consumption of alcohol and the role it plays is different for men and women.     

A maximum likelihood approach to test validation with missing and censored dependent variables

A maximum likelihood approach is described for estimating the validity of a test (x) as a predictor of a criterion variable (y) when there are both missing and censoredy scores present in the data set. The missing data are due to selection on a latent variable (y _s ) which may be conditionally related toy givenx. Thus, the missing data may not be missing random. The censoring process in due to the presence of a floor or ceiling effect. The maximum likelihood estimates are constructed using the EM algorithm. The entire analysis is demonstrated in terms of hypothetical data sets.     

The role of maladaptive beliefs in cognitive-behavioral therapy: Evidence from social anxiety disorder

Beliefs that are negatively biased, inaccurate, and rigid are thought to play a key role in the mood and anxiety disorders. Our goal in this study was to examine whether a change in maladaptive beliefs mediated the outcome of individual cognitive-behavioral therapy (CBT) for social anxiety disorder (SAD). In a sample of 47 individuals with SAD receiving CBT, we measured maladaptive interpersonal beliefs as well as emotional and behavioral components of social anxiety, both at baseline and after treatment completion. We found that (a) maladaptive interpersonal beliefs were associated with social anxiety at baseline and treatment completion; (b) maladaptive interpersonal beliefs were significantly reduced from baseline to treatment completion; and (c) treatment-related reductions in maladaptive interpersonal beliefs fully accounted for reductions in social anxiety after CBT. These results extend the literature by providing support for cognitive models of mental disorders, broadly, and SAD, specifically.