The role of temporal context and expectancy in resource allocation to and perception of rapid serial events

The perception of target events presented in a rapid stream of non-targets is impaired for early target positions, but then gradually improves, a phenomenon known as attentional awakening. This phenomenon has been associated with better resource allocation. It is unclear though whether improved resource allocation and attentional awakening are a consequence of the temporal context, that is, the position of the target event in the stimulus stream, or are due to a simple expectancy or foreperiod effect. Expectancy is an alternative explanation of attentional awakening because it depends on the a posteriori probabilities, which will increase with target position when all target positions are equally likely. To differentiate between the expectancy and the temporal context account the a priori (objective) probability of target position was defined such that the a posteriori probability would be high for early and late, and low for intermediate target positions. EEG was collected and the P3 ERP evoked by target events was derived as an indicator of resource allocation. A robust attentional awakening effect was observed. The relationships between measures of performance and P3 amplitude, and respectively target position, a priori, and a posteriori probability were analyzed. Results showed that in contrast to target position, a posteriori probability had little impact on performance and did not moderate the association between P3 amplitude and performance. Results also indicated that in spite of the evident role of target position on resource allocation and the perception of target events in rapid stimulus streams, target position is likely not the only variable these are affected by. Nevertheless, the findings of the present study suggest that whereas the temporal context of a rapid serial event is a key player for resource allocation to and perception of the event, expectancy seems of very little consequence.     

Resource-origins of Nonmonotonicity

Formal nonmonotonic systems try to model the phenomenon that common sense reasoners are able to “jump” in their reasoning from assumptions Δ to conclusions C without their being any deductive chain from Δ to C. Such jumps are done by various mechanisms which are strongly dependent on context and knowledge of how the actual world functions. Our aim is to motivate these jump rules as inference rules designed to optimise survival in an environment with scant resources of effort and time. We begin with a general discussion and quickly move to Section 3 where we introduce five resource principles. We show that these principles lead to some well known nonmonotonic systems such as Nute’s defeasible logic. We also give several examples of practical reasoning situations to illustrate our principles. Edited by Hannes Leitgeb     

公共行政部门人力资源培训新视角

吸收现代企业的人力资源管理思想是近年来公共行政部门人事管理工作的趋势。公共行政管理部门人力资源培训工作体系如何在先进的现代培训理念框架内实现为公共行政部门服务的针对性和有效性,是一个具有现实意义的问题。本文从培训目标、培训内容、培训方式、培训师资和评估激励5个方面探讨了公共行政管理部门干部教育培训管理工作的标准。     

Four Keys to Success (Theory, Implementation, Evaluation, and Resource/System Support): High Hopes and Challenges in Participation

In this article, I attempt to merge two themes. First, there is often a large gap between high hopes about impacts of policies or programs and the demonstrated results. I describe four keys/threats to success in any social problem area: theory, implementation, evaluation, and resource/system support. Second, I present theory and research from over 30 years of work on participation, conducted by my colleagues and myself that can illuminate and be illuminated by theory, implementation, evaluation, and resource/system support. I offer ideas for solutions that increase the probability of success. I conclude with the need to have high hopes tempered by theory and research to develop realistically ambitious solutions to social problems.     

Knowledge of the world of work: A test of occupational information for young men

The study evaluates a test of occupational information administered to a national sample of 5000 young men, aged 14–24 in 1966, as part of the National Longitudinal Surveys of employment behavior. The predictive validity of the test score is assessed by reference to multiple regression analyses which confirm the significance of the score as an independent predictor of subsequent hourly earnings and occupational status. Correlation and factor analyses are used to examine the quality of the measurement instrument. All in all, the instrument is judged to exhibit desirable characteristics in terms of internal consistency reliability, discriminatory power, and level of difficulty. The test's reliability compares favorably with a commercially produced test designed to be used in counseling as a measure of occupational knowledge. With the possible modification of deleting a section relating to knowledge of earnings differentials, the test is commended to those involved in assessing and counseling the occupational choice process.     

Group Communication During Resource Dilemmas: 4: The Effect of Group Size

Previous theory and research implies that increasing the size of groups facing resource dilemmas results in poorer outcomes, but no previous study has allowed for communication among group members. The present study relates group size with communication content, task outcomes, and participant perceptions of their experience. With communication, actual group size was irrelevant; to the extent that groups chose to cooperate, outcomes were more equal within groups and participants had more positive perceptions. Greater information exchange and negative maintenance talk was related with less equal outcomes and more negative perceptions; more discussion relevant to specific strategy was associated with more equal outcomes. Findings are instructive concerning the genesis and role of group cooperation.     

Taken out of context? Cross-level effects of between-person self-efficacy and difficulty on the within-person relationship of self-efficacy with resource allocation and performance

Research examining the within-person relationship among self-efficacy, resource allocation, and performance has been decidedly mixed, with positive, null, and even negative relationships being observed. In the present research, we propose that relationship of within-person changes in self-efficacy with subsequent changes in resource allocation and performance depends upon one’s typical level of self-efficacy; that is, increases and decreases in self-efficacy have different implications for individuals that are generally highly efficacious than for individuals who are typically less efficacious. Moreover, we propose that these relationships further depend upon the difficulty of goal being pursued. Support for these arguments is found across two studies. These results provide support for self-efficacy’s non-monotonic relationship with resource allocation, including our proposition that the nature of this non-monotonic relationship differs as a function of difficulty. These results also help further illuminate when and for whom self-efficacy is likely to increase or decrease resource allocation and performance.     

Forewarned is forearmed: Conserving self-control strength to resist social influence

Recent research has shown that resisting persuasion involves active self-regulation. Resisting an influence attempt consumes self-regulatory resources, and in a state of self-regulatory resource depletion, people become more susceptible to (unwanted) influence attempts. However, the present studies show that a forewarning of an impending influence attempt prompts depleted individuals to conserve what is left of their regulatory resources and thus promotes self-regulatory efficiency. As a result, when these individuals are subsequently confronted with a persuasive request, they comply less (Experiments 1 and 3), and generate more counterarguments (Experiment 2) than their depleted counterparts who were not forewarned and thus did not conserve their resources, and they are as able as non-depleted participants to resist persuasion.