The validity of vigilance tasks in differential diagnosis of children referred for attention and learning problems

This study was conducted to evaluate the convergent and discriminant validity of vigilance measures of attention and impulsivity in children. One hundred children referred for evaluation of attention and learning problems were administered a battery of tests including two vigilance tasks, other laboratory measures of inattention and impulsivity, and parent and teacher ratings. It was predicted that vigilance task performance would correlate with teacher ratings and laboratory measures of inattention while correlations with ratings of aggressive behavior were predicted to be lower. Moderate correlations were obtained between the vigilance task scores and other laboratory measures of inattention and impulsivity. However, the vigilance scores did not correlate with teacher or parent ratings of behavior. A factor analysis, conducted to identify underlying dimensions of attention in the battery of tests, revealed strong source effects. The implications for use of vigilance measures in diagnosis are discussed.Portions of this paper were presented at the 1990 Learning Disabilities Association of America International Conference, Anaheim, California.     

The Relation Between Norm Accessibility,Pornography Use,and Parental Mediation Among Emerging Adults

Widespread access to and use of pornography has led to concern about the potentially negative effects of exposure to pornography on emerging adults—its largest user group. Past research shows that salient social norms can influence subsequent behavior. This study, therefore, explored the relationship between salient pornography-related norms and pornography use among emerging adults, as well as the relationship between parental mediation of pornography during adolescence and emerging adults’ salient pornography-related norms. Results revealed that emerging adults are more likely to view pornography when they hold a salient belief (norm) that their peers both approve of viewing and regularly view pornography. The study also found that parents’ provision of rules about viewing pornography during adolescence may reduce future pornography use by instilling the salient belief that the parent disapproves of viewing pornography. These findings suggest that the effect of rules in the home about adolescents’ use of pornography may persist into emerging adulthood.     

Drilling in the Cathedral

Utilitarianism, alienation, consumerism, and oppression are major forces endangering Earth's well‐being. Over and against these morally and ecologically destructive forces are practices and ideas rooted and nourished in both ancient and modern religio‐moral institutions and traditions. As powerful voices of faith calling the present to account, sacramentalism, mysticism, asceticism, and prophetic liberative practices offer Earth‐honoring ways of life that draw from shared wells and deep‐running waters.     

Threshold Theory Tested in an Organizational Setting: The Relation Between Perceived Innovativeness and Intelligence in a Large Sample of Leaders

A large sample of leaders (N = 4257) was used to test the link between leader innovativeness and intelligence. The threshold theory of the link between creativity and intelligence assumes that below a certain IQ level (approximately IQ 120), there is some correlation between IQ and creative potential, but above this cutoff point, there is no correlation. Support for the threshold theory of creativity was found, in that the correlation between IQ and innovativeness was positive and significant below a cutoff point of IQ 120. Above the cutoff, no significant relation was identified, and the two correlations differed significantly. The finding was stable across distinct parts of the sample, providing support for the theory, although the correlations in all subsamples were small. The findings lend support to the existence of threshold effects using perceptual measures of behavior in real-world organizational settings, and thus beyond creative potential measures applied in the psychological laboratory where it has previously been documented.     

Asymmetry of reinforcement and punishment in human choice

The hypothesis that a penny lost is valued more highly than a penny earned was tested in human choice. Five participants clicked a computer mouse under concurrent variable-interval schedules of monetary reinforcement. In the no-punishment condition, the schedules arranged monetary gain. In the punishment conditions, a schedule of monetary loss was superimposed on one response alternative. Deviations from generalized matching using the free parameters c (sensitivity to reinforcement) and log k (bias) were compared in the no-punishment and punishment conditions. The no-punishment conditions yielded values of log k that approximated zero for all participants, indicating no bias. In the punishment condition, values of log k deviated substantially from zero, revealing a 3-fold bias toward the unpunished alternative. Moreover, the c parameters were substantially smaller in punished conditions. The values for bias and sensitivity under punishment did not change significantly when the measure of net reinforcers (gains minus losses) was applied to the analysis. These results mean that punishment reduced the sensitivity of behavior to reinforcement and biased performance toward the unpunished alternative. We concluded that a single punisher subtracted more value than a single reinforcer added, indicating an asymmetry in the law of effect.     

INEQUALITY,INCENTIVES AND THE INTERPERSONAL TEST

This article defends three claims: (1) even if Rawls' difference principle permits incentives to induce talented people to be more productive, it does not follow that it permits inequalities; (2) the difference principle, when adequately specified, may in some circumstances permit incentives and allow that the worst off are not made as well off as they could be; and (3) an argument for incentives might pass Cohen's interpersonal test even if it is unsound and might not pass it even if it is sound. 1     

Identification of Matrices in Science and Engineering

Engineering science is a scientific discipline that from the point of view of epistemology and the philosophy of science has been somewhat neglected. When engineering science was under philosophical scrutiny it often just involved the question of whether engineering is a spin-off of pure and applied science and their methods. We, however, hold that engineering is a science governed by its own epistemology, methodology and ontology. This point is systematically argued by comparing the different sciences with respect to a particular set of characterization criteria. This revised version was published online in August 2006 with corrections to the Cover Date.