Reflections on teaching health care ethics on the web

As web instruction becomes more and more prevalent at universities across the country, instructors of ethics are being encouraged to develop online courses to meet the needs of a diverse array of students. Web instruction is often viewed as a cost-saving technique, where large numbers of students can be reached by distance education in an effort to conserve classroom and instructor resources. In practice. however, the reverse is often true: online courses require more of faculty time and effort than do many traditional classes. Based on personal experience teaching an online course in health care ethics for students in the Allied Health Professions, it is evident that there are both benefits and challenges in teaching online courses, particularly in ethics. Examples of benefits are (1) the asynchronous nature of web instruction allows students to progress through the course at their own pace and at times that are convenient given their clinical responsibilities; (2) web courses allow for a standardization of content and quality of instruction over a diversity of programs; and (3) examples can be tailored to the differing experiences of students in the course. Some challenges to teaching online ethics courses include (1) the fact that online instruction benefits visual learners and disadvantages those lacking good reading comprehension or strong writing skills; (2) developing meaningful student-student and student-instructor interaction; and (3) teaching ethics involves teaching a process rather than a product. Allowing students to apply their knowledge to real-world cases in their disciplines and encouraging them to share experiences from clinical practice is an effective way to meet several of these challenges. Building an online community is another good way to increase the interaction of students and their engagement with the material.     

Induced mood change and dysfunctional attitudes in remitted bipolar I affective disorder

This study investigated the possibility that, in remitted bipolar I affective disorder, dysfunctional attitudes are mood-state dependent. Participants were 120 individuals with remitted bipolar I disorder, remitted unipolar depression, or no history of affective disorder. The Dysfunctional Attitudes Scale (DAS; Weissman, 1979) was completed before and after positive or negative mood challenge. Following mood increase, the bipolar group changed significantly less in DAS total score than did the other 2 groups, and in goal-striving and achievement attitudes relative to the unipolar group. These findings did not provide clear support for the mood-state dependency theory in bipolar disorder, arguing instead for the presence in bipolar I disorder of dysfunctional cognitions that show characteristic resilience in the face of minor positive mood increase.     

Performance differences among four organizational commitment profiles

The authors drew from prior research on organizational commitment and from configural organizational theory to propose a framework of affective and continuance commitment profiles. Using cluster analyses, the authors obtained evidence for 4 of these profiles in an energy industry sample (N=970) and a sample of 345 employed college students. The authors labeled the clusters: allied (i.e., moderate affective and continuance commitment), free agents (moderate continuance commitment and low affective commitment), devoted (high affective and continuance commitment), and complacent (moderate affective and low continuance commitment). Using a subset of the employed student sample (n=148), the authors also found that the free agents received significantly poorer supervisor ratings of performance, organizational citizenship behavior, and antisocial behavior than any other group.     

Relations of perceived physical self-efficacy and motivational responses toward physical activity by urban high school students

To be effective in promoting physical activity among urban, minority adolescents, the factors and psychological processes that motivate them to engage in and maintain a physically active lifestyle should be examined. The relation of physical self-efficacy and motivational responses toward physical activity in 46 urban minority adolescents was explored. As hypothesized, there were significant positive relationships among Percieved Physical Ability, Physical Self-presentation Confidence, Effort, and Enjoyment (coefficients ranged from .29 to .80), suggesting that participants who had higher perceived physical ability were likely to report higher perceptions of self-presentation, more enjoyment of physical activity, and harder work in physical activity. These results indicate specific relationships among Effort, Enjoyment, Perceived Physical Ability, and Physical Self-presentation Confidence in this sample. Physical self-efficacy appears to be a stronger predictor of motivational responses in physical activity. Practical implications for physical educators include incorporating strategies known to develop self-efficacy, such as mastery experiences involving successive trials of increasing difficulty, self-observation, external feedback, peer modeling, and verbal persuasion.     

Inhibition of return to an occluded object depends on expectation

Inhibition of return (IOR) is indexed by slower reaction times to targets presented at previously attended locations or objects. If a moving object is occluded, some studies find IOR, others do not. Four experiments examined whether this inconsistency hinges on the observer's expectation as to whether the object continues to exist at the end of its motion sequence. Results showed that observer expectation is a powerful determining factor: IOR occurs only if the observer expects the object to continue to exist. In contrast, if the object is not occluded, IOR occurs only if the object remains on view immediately before the target is presented. It was concluded that 2 factors, object continuity and observer expectation, mediate both location- and object-based IOR.     

The moderating effects of employee tenure on the relation between organizational commitment and job performance: a meta-analysis

This meta-analysis investigated the correlation between attitudinal commitment and job performance for 3,630 employees obtained from 27 independent studies across various levels of employee tenure. Controlling for employee age and other nuisance variables, the authors found that tenure had a very strong nonlinear moderating effect on the commitment-performance correlation, with correlations tending to decrease exponentially with increasing tenure. These findings do not appear to be the result of differences across studies in terms of the type of performance measure (supervisory vs. self), type of tenure (job vs. organizational), or commitment measure (Organizational Commitment Questionnaire [L. W. Porter, R. M. Steers, R. T. Mowday, & P. V. Boulian, 19741 vs. other). The implications and future research directions of these results are discussed.     

Outline shape is a mediator of object recognition that is particularly important for living things

We assess the importance of outline shape in mediating the recognition of living and nonliving things. Natural objects were presented as shaded line drawings or silhouettes, and were living and nonliving things. For object decision (deciding whether an object may be encountered in real life) there were longer response times to nonliving than to living things. Importantly, this category difference was greater for silhouettes than for shaded line drawings. For naming, similar category and stimulus differences were evident, but were not as pronounced. We also examined effects of prior naming on subsequent object decision performance. Repetition priming was equivalent for nonliving and living things. However, prior presentation of silhouettes (but not shaded line drawings) reduced the longer RT to nonliving things relative to living things in silhouette object decision. We propose that outline contour benefits recognition of living things more than nonliving things: For nonliving things, there may be greater 2-D/3-D interpretational ambiguity, and/or they may possess fewer salient features.     

Mechanisms of same/different abstract-concept learning by rhesus monkeys (Macaca mulatta)

Experiments with 9 rhesus monkeys (Macaca mulatta) showed, for the first time, that abstract-concept learning varied with the training stimulus set size. In a same/different task, monkeys required to touch a top picture before choosing a bottom picture (same) or white rectangle (different) learned rapidly. Monkeys not required to touch the top picture or presented with the top picture for a fixed time learned slowly or not at all. No abstract-concept learning occurred after 8-item training but progressively improved with larger set sizes and was complete following 128-item training. A control monkey with a constant 8-item set ruled out repeated training and testing. Contrary to the unique-species account, it is argued that different species have quantitative, not qualitative, differences in abstract-concept learning.     

Interplay of biomechanical constraints and kinematic strategies in selecting arm postures

In this study, the authors examined the interplay between biomechanics and control strategies in the resolution of excess degrees of freedom at the joint level. Seven participants made aimed arm movements from 30 starting points and several starting postures to targets. Final arm postures for movements to a target exhibited substantial joint angle variation. Through regression modeling and by comparing observed final arm postures with biomechanically plausible postures, the authors identified 3 kinematic strategies: (a) Maintain deviations from the average angle at the starting point to the joint's final posture; (b) make torso rotations that are a fixed proportion of shoulder rotations; and (c) adopt a characteristic combination of 4 wrist-positioning approaches. The results demonstrated that kinematic strategies can account for substantial variance in final arm postures, if one takes into account 2 types of individual differences-those that arise inevitably from biomechanical constraints and those that reflect choices in movement strategy.