More on the relation between division and multiplication in simple arithmetic: Evidence for mediation of division solutions via multiplication

Adults (N = 32) solved simple multiplication (e.g., 8 x 7) and corresponding division problems (e.g., 56/8). Self-reports of solution processes were given by half of the participants. Latency patterns and error rates were closely related across operations and were similar in self-report and no-report conditions. Solution of division problems, however, facilitated solution of multiplication problems more than the reverse. On large division problems, participants reported that they "recast" problems as multiplication (e.g., 56/8 as 8 x = 56). These results support the hypothesis that multiplication and division are stored in separate mental representations but that solution of difficult division problems sometimes involves access to multiplication.     

Squinting with the mind’s eye: Effects of stimulus resolution on imaginal and perceptual comparisons

Subjects either viewed or visualized arrays that were divided into four quadrants, with each quadrant containing a set of stripes. In two experiments, one array contained only relatively narrow (high-resolution) stripes, and one contained only relatively thick (low-resolution) stripes. The subjects compared sets of stripes in different quadrants according to their length, spacing, orientation, or width. When the subjects visualized the arrays, they required much more time to compare high-resolution patterns than low-resolution patterns; when the subjects saw the arrays, they evaluated both types of arrays equally easily. In addition, the results from the third experiment provide strong evidence that people use imagery in this task; in one condition, the subjects evaluated oblique sets of stripes, and in another condition, they evaluated vertical and horizontal stripes. In both imagery and perception, the subjects made more errors when evaluating oblique stimuli; in imagery, they also required more time to evaluate oblique stimuli. The results suggest that additional effort is required in imagery to represent visual patterns with high resolution. This finding demonstrates that, although imagery and perception may activate common brain regions, it is more difficult to represent high-resolution information in imagery than in perception.     

Boys Who Join Gangs: A Prospective Study of Predictors of First Gang Entry

In a representative sample of boys who were in the 7th grade of an urban public school system at the start of a 6-year longitudinal study, more African American boys (23.8%) than non-Hispanic White boys (3.9%) had entered an antisocial gang by age 19. There were too few White gang members to study, but among African American boys, first gang entry was predicted prospectively by both baseline conduct disorder (CD) behaviors and increasing levels of CD behaviors prior to gang entry. This suggests that gang entry may be a further developmental step for some boys who are already on a trajectory of worsening antisocial behavior. Having friends prior to gang entry who engaged in aggressive delinquency increased the risk of gang entry further, but only during early adolescence. Family income and parental supervision also independently predicted gang entry, but the direction of their influences depended on the youth's age.     

Choosing remedies after accidents: Counterfactual thoughts and the focus on fixing “human error”

The present research is motivated by an interest in why organizational decision makers so often respond to accidents with remedy plans that focus narrowly on correcting human error rather than more environment-focused plans or more encompassing plans. We investigated the role of counterfactual thinking in the decision-making tendency toward human-focused plans. Our experiments indicated that even in a domain where human-focused remedies were not otherwise appealing, many participants decided on human-focused remedies after they had generated an “if only” conjecture about the accident. This reflects that human actions are often selected as the focus of “if only” conjectures and, importantly, that this focus “locks in” and carries through to subsequent remedy decisions. Our hypothesis that remedy plans are produced from “if only” thoughts was supported over several alternative interpretations. We discuss implications for research on the relation between counterfactual thinking and adaptive learning.     

A Comparison of the Influence of Conflictual and Supportive Social Interactions on Psychological Distress

Following a quantitative review examining the relative influence of positive and negative social exchanges on emotional health, a second-order factor model of negative social exchange was tested and supported in a sample of 906 college students. Structural equation analysis exploring the unique effects of negative social exchange and perceived support satisfaction on depression revealed both variables to predict this outcome, over and above the contribution of personality and coping variables. In addition to the direct effects of the Big Five personality dimensions on depression, indirect effects of the Big Five via negative social exchange, support satisfaction, and avoidant coping also were observed. Although the prevailing belief among support researchers is that the negative effects of conflictual social interactions outweigh the positive effects of social support, the results of the quantitative review suggest boundary conditions that qualify this conclusion. In addition to corroborating a hierarchical measurement model of negative social exchange, the results of the present investigation suggest that how social support and social negativity are measured substantially influences conclusions concerning their relative impact on psychological distress.     

Death: the final stage of confusion

The sensitive case presentation by Barbara Springer Edwards and Winston M. Ueno, concerning a patient's desire to be sedated and disconnected from a respirator, furnishes much material for discussion. One issue: When a patient refuses treatment, what are the limits of the health-care provider's obligation to persuade the patient to accept or continue with treatment? I say "limits" advisedly, for the obligation has both a floor (the least that one must attempt) and a ceiling (beyond which efforts to persuade become medical harassment).... Another point concerns the language we all use to describe the experiences of patients. My wife, Barbara, rails at how doctors use the terms "distress" and "discomfort" -- a usage that, she points out, has infected her husband as well. She is right to rail. Someone who calls the suffocation caused by disconnecting a respirator "distressing" or "uncomfortable" will call the Gulf War a "spat."... The main issue this discussion by Edwards and Ueno raises for me, though, is that of the manner and meaning of dying.     

Expectations for Postcombination Organizational Life: A Study of Responses to Merger and Acquisition Scenarios1

A scenario experiment was conducted to investigate expectations for postmerger/acquisition (combination) life. Relative size of participants' organization (i.e., being in an organization of smaller, equal or larger size), and the motive for combining (growth or survival) were predicted to influence postcombination expectations regarding personal autonomy, the use of power, postcombination sense of organizational morale/identity, feelings of job security, and career opportunities. After reading scenarios of organizational combinations in which relative organizational size and motive were manipulated, 252 MBA students responded to questionnaires designed to assess their postcombination expectations. Results indicated that size and motive had significant effects on expectations. In brief (a) the most positive postcombination expectations were from persons in larger organizations when the motive for combining was growth and (b) the least positive postcombination expectations were from persons from smaller organizations when survival was the motive for combining.     

Evidence for asymmetrical hemispheric priming using known and unknown warning stimuli in two language-trained chimpanzees (Pan troglodytes).

In this article results are reported from 3 warning stimulus-priming experiments that assessed hemisphere-specific activation and lateralization in 2 language-trained chimpanzees (Pan troglodytes). Results from Experiment 1 indicated a right visual field advantage in priming for meaningful warning stimuli presented in blocks of 36 trials. In Experiments 2 and 3, randomized presentations of meaningful, familiar, and meaningless stimuli resulted in right visual field advantages for meaningful warning stimuli. No visual half-field differences were found for familiar or meaningless warning stimuli. The findings are similar to those found in human subjects using known-unknown symbol paradigms; they suggest that basic phylogenetic neuropsychological systems related to activation and priming processes may link nonhuman primate and human studies of lateralization.     

ON THE TRANSDISCIPLINARY NATURE OF THE EPISTEMOLOGY OF DISCOVERY

Abstract. Despite the by now historical tendency to demarcate scientific epistemology sharply from virtually all others, especially theological "epistemology ," it has recently been recognized that both enterprises share a great deal in common, at least as far as the epistemology of discovery is implicated. Such a claim is founded upon a psychological analysis of figuration, where, it is argued, metaphor plays a crucial role in the mediation of discovery, in the domains of science and religion alike. Thus, although the conventionally conceived scientific method is crucial to the enterprise, primacy must nonetheless be accorded to discovery , which drives virtually all disciplines.