MEMORY AND COGNITIVE ABILITIES IN UNIVERSITY PROFESSORS:

Abstract— Professors from the University of California at Berkeley were administered a 90-min test battery of cognitive performance that included measures of reaction time, paired-associate learning, working memory, and prose recall. Age effects among the professors were observed on tests of reaction time, paired-associate memory, and some aspects of working memory. Age effects were not observed on measures of proactive interference and prose recall, though age-related declines are generally observed in standard groups of elderly individuals. The findings suggest that age-related decrements in certain cognitive functions may be mitigated in intelligent, cognitively active individuals     

SPLITTING THE BEAM:

Abstract— In an effort to examine the flexibility with which attention can be allocated in visual space, we investigated whether subjects could selectively attend to multiple noncontiguous locations in the visual field We examined this issue by perching two separate areas of the visual field and requiring subjects to decide whether the letters that appeared in these locations matched or mismatched while distracters that pinned either the match or mismatch response were presented between the cued locations. If the distracters had no effect on performance, it would provide evidence that subjects can divide attention over noncontiguous areas of space. Subjects were able to ignore the distracters when the targets and distracters were presented as nooses stimuli (i e, when premises were changed into the targets and distracters). In contrast, when the targets and distracters were presented as sudden-onset stimuli, subjects were unable to ignore the distracters. These results begin to define the conditions under which attention can be flexibly deployed to multiple noncontiguous locations in the visual field.     

Dyadic Duration and the Performance-Satisfaction Relationship: A Contextual Perspective 1

This study examined dyadic duration as a contextual variable affecting the relationship between subordinate performance and job satisfaction. Dyadic duration, the length of time a subordinate has been directed by the same immediate superior, was expected to enhance the performance-satisfaction relationship in dyads of shorter duration and neutralize this relationship in dyads of longer duration. As anticipated, in shorter duration dyads, performance was found to be positively associated with satisfaction with the nature of work, characteristics of supervision, and characteristics of coworkers. For dyads of longer duration, an unexpected inverse relationship was found between performance and all of these same variables. Overall, these results suggest that considering dyadic duration as a contextual variable offers a unique perspective on the relationship between subordinates' performance and job satisfaction.     

Moral Questions and Amoral Answers: Who Decides?

ABSTRACT Researchers have examined moral thought using selected philosophical standards without showing that such standards represent moral thinking. Recently, we examined the extent to which assumed standards actually organize moral knowledge (Quinn, Houts, & Graesser, this issue). We found dimensions not accounted for by previous theories. In his response (this issue), Shaffer misrepresents the aims of our research, and he overlooks the implications of assessing naturalistic rather than prescribed dimensions of morality.     

On thought experiments as a priori science

Against Norton's claim that all thought experiments can be reduced to explicit arguments, I defend Brown's position that certain thought experiments yield a priori knowledge. They do this, I argue, not by allowing us to perceive “Platonic universals” (Brown), even though they may contain non‐propositional components that are epistemically indispensable, but by helping to identify certain tacit presuppositions or “natural interpretations” (Feyerabend's term) that lead to a contradiction when the phenomenon is described in terms of them, and by suggesting a new natural interpretation in terms of which the phenomenon can be redescribed free of contradiction.     

Educational Success in High-Risk Settings: Contributions of the Chicago Longitudinal Study

I provide an overview of the Chicago Longitudinal Study. This prospective study traces the educational and social success of a large sample of low-income children (over 90% of whom are African American) from high-poverty neighborhoods in the Chicago Public Schools. In 1985–1986, the sample participated in the Child–Parent Centers and other early childhood programs. The four studies reported in this special issue highlight the contributions of school mobility, parent involvement, educational expectations, and other family and school experiences in preventing learning problems and promoting educational success.     

The ethics and politics of small sacrifices in stem cell research

Pluripotent human stem cell research may offer new treatments for hundreds of diseases, but opponents of this research argue that such therapy comes attached to a Faustian bargain: cures at the cost of the destruction of many frozen embryos. The National Bioethics Advisory Commission (NBAC), government officials, and many scholars of bioethics, including, in these pages, John Robertson, have not offered an adequate response to ethical objections to stem cell research. Instead of examining the ethical issues involved in sacrificing human embryos for the goal of curing fatal and disabling diseases, they seek to either dismiss the moral concerns of those with objections or to find an "accomodation" with those opposed to stem cell research. An ethical argument can be made that it is justifiable to modify or destroy certain human embryos in the pursuit of cures for dread and lethal diseases. Until this argument is made, the case for stem cell research will rest on political foundations rather than on the ethical foundations that the funding of stem cell research requires.