The Relationship between Everyday Problem Solving and Inconsistency in Reaction Time in Older Adults

ABSTRACT

The purpose of the present study was to investigate whether inconsistency in reaction time (RT) is predictive of older adults' ability to solve everyday problems. A sample of 304 community dwelling non-demented older adults, ranging in age from 62 to 92, completed a measure of everyday problem solving, the Everyday Problems Test (EPT). Inconsistency in latencies across trials was assessed on four RT tasks. Performance on the EPT was found to vary according to age and cognitive status. Both mean latencies and inconsistency were significantly associated with EPT performance, such that slower and more inconsistent RTs were associated with poorer everyday problem solving abilities. Even after accounting for age, education, and mean level of performance, inconsistency in reaction time continued to account for a significant proportion of the variance in EPT scores. These findings suggest that indicators of inconsistency in RT may be of functional relevance.     

What is a Line?

Since the discovery of incommensurability in ancient Greece, arithmeticism and geometricism constantly switched roles. After ninetieth century arithmeticism Frege eventually returned to the view that mathematics is really entirely geometry. Yet Poincaré, Brouwer, Weyl and Bernays are mathematicians opposed to the explication of the continuum purely in terms of the discrete. At the beginning of the twenty-first century ‘continuum theorists’ in France (Longo, Thom and others) believe that the continuum precedes the discrete. In addition the last 50 years witnessed the revival of infinitesimals (Laugwitz and Robinson—non-standard analysis) and—based upon category theory—the rise of smooth infinitesimal analysis and differential geometry. The spatial whole-parts relation is irreducible (Russell) and correlated with the spatial order of simultaneity. The human imaginative capacities are connected to the characterization of points and lines (Euclid) and to the views of Aristotle (the irreducibility of the continuity of a line to its points), which remained in force until the ninetieth century. Although Bolzano once more launched an attempt to arithmetize continuity, it appears as if Weierstrass, Cantor and Dedekind finally succeeded in bringing this ideal to its completion. Their views are assessed by analyzing the contradiction present in Grünbaum’s attempt to explain the continuum as an aggregate of unextended elements (degenerate intervals). Alternatively a line-stretch is characterized as a one-dimensional spatial subject, given at once in its totality (as a whole) and delimited by two points—but it is neither a breadthless length nor the (shortest) distance between two points. The overall aim of this analysis is to account for the uniqueness of discreteness and continuity by highlighting their mutual interconnections exemplified in the nature of a line as a one-dimensional spatial subject, while acknowledging that points are merely spatial objects which are always dependent upon an extended spatial subject. Instead of attempting to reduce continuity to discreteness or discreteness to continuity, a third alternative is explored: accept the irreducibility of number and space and then proceed by analyzing their unbreakable coherence. The argument may be seen as exploring some implications of the view of John Bell, namely that the “continuous is an autonomous notion, not explicable in terms of the discrete.” Bell points out that initially Brouwer, in his dissertation of 1907, “regards continuity and discreteness as complementary notions, neither of which is reducible to each other.”     

Visual perception in fencing: Do the eye movements of fencers represent their information pickup?

The present study examined whether results of athletes' eye movements while they observe fencing attacks reflect their actual information pickup by comparing these results with others gained with temporal and spatial occlusion and cuing techniques. Fifteen top-ranking expert fencers, 15 advanced fencers, and 32 sport students predicted the target region of 405 fencing attacks on a computer monitor. Results of eye movement recordings showed a stronger foveal fixation on the opponent's trunk and weapon in the two fencer groups. Top-ranking expert fencers fixated particularly on the upper trunk. This matched their performance decrements in the spatial occlusion condition. However, when the upper trunk was occluded, participants also shifted eye movements to neighboring body regions. Adding cues to the video material had no positive effects on prediction performance. We conclude that gaze behavior does not necessarily represent information pickup, but that studies applying the spatial occlusion paradigm should also register eye movements to avoid underestimating the information contributed by occluded regions.     

Developing and Validating a Quantitative Measure of Organizational Courage

Purpose  

To present the Organizational Courage Assessment (OCA) and explore its construct validity.     

Leader responsiveness, equity sensitivity, and employee attitudes and behavior

This study investigated the relationships between leader responsiveness to employee requests and employee attitudes and behaviors in a sample of managers and their subordinates. Additionally, the study investigated the moderating effect of an individual difference variable (equity sensitivity), on the relationships between leader responsiveness and employee attitudes and behaviors. Leader responsiveness related significantly with job satisfaction, organizational commitment, and organizational citizenship behavior. Furthermore, equity sensitivity moderated the relationships between leader responsiveness and job satisfaction. Entitleds reported lower job satisfaction when manager fulfillment of employee requests was low than did Benevolents, whereas differences were minimal when manager request fulfillment was high. Implications of the findings were discussed.     

Measuring Symptoms and Functioning of Youth with ADHD in Middle Schools

The identification of reliable and valid means for evaluating the effectiveness of school-based treatments and completing diagnostic evaluations of middle school aged students are needed. The present study examined the inter-rater agreement of teacher ratings and the relationship between ratings and observational data in a middle school setting. The data are interpreted in the context of differences between a secondary and elementary school setting. Teacher ratings and observational data were collected regularly over the course of two academic years for middle school students diagnosed with ADHD. The results indicate low rates of inter-rater agreement as well as low rates of agreement between teachers and observational data, and between observational data collected in different classrooms. Inter-rater agreement was lowest in late fall and gradually increased over the second half of the year. Implications for conducting treatment outcome evaluations of school-based treatment programs and diagnostic evaluations are discussed.     

Group interventions for patients with cancer and HIV disease: part IV. Clinical and policy recommendations

Group interventions have assumed a growing role in primary prevention and supportive care for cancer and HIV disease. Earlier sections of this Special Report examined empirical findings for these interventions and provided recommendations for future research. The current section offers brief recommendations for service providers, policymakers, and stakeholders. Group services now occupy an increasingly prominent place in primary prevention programs and medical settings. In previous sections of this Special Report (Sherman, Leszcz et al., 2004; Sherman, Mosier et al., 2004a, 2004b) we examined the efficacy of different group interventions at different phases of cancer or HIV disease, considered characteristics of the intervention and the participants that might influence outcomes, and discussed mechanisms of action. Methodological challenges and priorities for future research were highlighted. In this, the final section, we offer brief recommendations for service providers, policymakers, and other stakeholders. We consider some of the barriers that constrain use of empirically-based group interventions and note how these programs might be implemented more widely and effectively.     

Implications of test revisions for research

Test revisions are increasingly common in psychology and neuropsychology in particular. However, such revisions may alter in complex ways the kind of information obtained, and they may assess traits, abilities, and conditions in ways different from earlier versions. This article outlines some of the problems associated with the revision of tests facing clinicians and researchers. Three broad classes of revision are considered. Part 1 considers the aging of tests, part 2 concerns the aging of participants, and part 3 considers changes in test format. Although the article focuses largely on measures of intelligence and personality, the issues addressed in the article apply to other tests and assessment domains as well.     

How critical is “critical thinking”?

Before criticism is justified, an account of the applicable criteria should be given. This task concerns first of all the well-known logical principles of identity, contradiction and the excluded middle. They connect critical thinking to the conceptual element of rationality and to the normed nature of logical thinking, manifest in logically sound (norm-conformative) thinking and antinormative thinking—briefly also accounting for the dialectical tradition. An analysis of these principles requires an understanding of the uniqueness of, and coherence between, the logical and non-logical aspects in the light of contraries like logical-illogical, polite-impolite and frugal-wasteful. It also questions the idea of autonomy and examines the switch from principles to values. When a school of thought does not accept all the logical principles, the criteria for scientific thinking are challenged, for example in intuitionistic logic which rejects the universal validity of the principle of the excluded middle. It is then argued that the principle of sufficient reason and that of the excluded antinomy points at a more than logical foundation for critical thinking and ultimately calls for a non-reductionist ontology.     

Response Style Theory Revisited: Gender Differences and Stereotypes in Rumination and Distraction

Response Style Theory [S. Nolen-Hoeksema (1987) “Sex Differences in Unipolar Depression: Evidence and Theory,” Psychological Bulletin, Vol. 101, pp. 259–282] suggests that, when depressed, women ruminate on their sad feelings while men distract themselves from theirs. We sought to examine this gender difference in more detail. In Study 1, 155 students provided stereotype ratings or self-reports of responses to depression. The stereotype ratings conformed precisely to Response Style Theory yet exaggerated self-reported gender differences, especially for men. In Study 2, 40 roommate pairs completed a similar set of ratings. Again, other-ratings conformed exactly to Response Style Theory's predictions while self-ratings showed a more moderated pattern. In both studies, women reported ruminating more than did men, yet men and women were equally likely to report distraction. We conclude by examining several hypotheses for the discrepancies between stereotypes and self-reports for men as well as the increased rates of rumination among women.