Visual search was studied under a variety of conditions to clarify some differences among the results of previous investigations and to provide a testing ground for models of visual information processing. Display configuration, target and field composition, exposure duration, and display size (up to 16 elements) were among the parameters investigated. In some conditions, mean reaction time was essentially invariant with display size, while in other conditions it increased substantially and linearly with display size. Current models of visual information processing were evaluated in the light of these and previous findings; all were found wanting. The data seem to demand a system subject to flexible cognitive control processes. 相似文献
A procedure for measuring the CIE chromaticity coordinates which avoids some of the problems encountered with the method reported by Murch (1972) is described. 相似文献
A method for computing the transformation matrix for Carroll's analytic simple structure (1) is presented. The procedure involves successively finding the smallest latent root and associated vector of symmetric matrices. 相似文献
A multiple schedule having both an appetitive and an avoidance component was maintained in two dogs to create a complex behavioral base line for observing the effects of chlorpromazine. Both soluble and “Spansule” chlorpromazine generated similar functions relating drug dose to measures of behavioral output. Although the dose ranges and the drugging procedures differed markedly for the different preparations of CPZ, the functions generated were comparable. There was no evidence that chlorpromazine had a differential depressing effect as a function of type of reinforcement. At low doses, rates of responding on the food-reinforced components increased slightly, whereas rates on the avoidance components remained relatively unchanged. At higher doses, both components showed an approximately equal depression of responding. These results are discussed with reference to some of the logical and experimental difficulties inherent in making comparisons across components of a multiple schedule and across schedules in general. 相似文献
This paper explores the process of psychological and spiritual development through a series of active imaginations arising from the author's ‘psycho‐spiritual quest’, a process of transformation in which the individual progressively frees themselves from the ego's identifications and may be afforded a vision of the ‘self as consciousness’, as described by Vedanta. The author describes how this quest was facilitated by the disciplines of Transcendental Meditation, Jungian analysis and Vedanta, and how these three disciplines can work together to foster psycho‐spiritual development. The paper aims to de‐mystify the actual experiences that can accompany these practices. The records of these active imaginations, tracing some key stages in this process, are then presented, with a commentary by Marcus West, linking them to Jung's concepts of ego and Self and recent understandings of consciousness and ego development. There is a discussion of Jung's conceptualizations of the ego and the Self and his rejection of the Vedantic understanding of the Self as consciousness. These views are then explored and a reconciliation is suggested through the understanding of the process of disidentification where the difference between Jung's view of the Self and that of Vedanta is understood to be due to the extent of disidentification from the contents of consciousness. 相似文献
Objective: Sleep disturbance in chronic pain is common, occurring in two-thirds of patients. There is a complex relationship between chronic pain and sleep; pain can disrupt sleep and poor sleep can exaggerate pain intensity. This may have an impact on both depressive symptoms and attention to pain. This study aims to evaluate the relationship between chronic pain and sleep, and the role of mood and attention.
Methods: Chronic pain patients, recruited from a secondary care outpatient clinic, completed self-report measures of pain, sleep, depressive symptoms and attention to pain. Hierarchical regression and structural equation modelling were used to explore the relationships between these measures. Participants (n = 221) were aged between 20 and 84 (mean = 52) years.
Results: The majority of participants were found to be ‘poor sleepers’ (86%) with increased pain severity, depressive symptoms and attention to pain. Both analytical approaches indicated that sleep disturbance is indirectly associated with increased pain severity Instead the relationship shared by sleep disturbance and pain severity was further associated with depressive symptoms and attention to pain.
Conclusions: Our results indicate that sleep disturbance may contribute to clinical pain severity indirectly though changes in mood and attention. Prospective studies exploring lagged associations between these constructs could have critical information relevant to the treatment of chronic pain. 相似文献
The purpose of this study was to investigate whether situational factors predict ethicality judgments of theft behavior, and whether the effect of situational factors is moderated by moral relativism.
Design/Methodology/Approach
Data were obtained across two laboratory experiments using undergraduate business students attending a Canadian university (n = 372). Student participants viewed a videotaped vignette of an employee informed that he had been caught stealing sales commission. In the vignettes, we manipulated two situational factors: whether or not (a) the theft has monetary consequences for the organization, and (b) similar theft is commonplace within the organization.
Findings
In Experiment 1, both situational factors interacted with moral relativism in the prediction of ratings of unethical conduct. In Experiment 2, using a within-participant research design, we achieved an interaction between the organizational consequences manipulation and moral relativism, although we obtained a considerably stronger effect size for the interaction compared to the first experiment.
Implications
We discuss implications of our findings and suggest avenues for future research. In particular, we consider the possibility that managers may not share a common frame-of-reference when considering the ethicality of theft. This could affect whether and the extent to which theft behavior is reprimanded.
Originality/Value
Our study contributes to research on employee theft, and also adds incrementally to our understanding of how both situational factors and moral relativism jointly influence perceptions of theft behavior.
Some of the things that adults learn about language, and about the world, are very specific, whereas others are more abstract or rulelike. This article reviews evidence showing that infants, too, can very rapidly acquire both specific and abstract information, and considers the mechanisms that infants might use in doing so. 相似文献
Eye movement sequences??or scanpaths??vary depending on the stimulus characteristics and the task (Foulsham & Underwood Journal of Vision, 8(2), 6:1?C17, 2008; Land, Mennie, & Rusted, Perception, 28, 1311?C1328, 1999). Common methods for comparing scanpaths, however, are limited in their ability to capture both the spatial and temporal properties of which a scanpath consists. Here, we validated a new method for scanpath comparison based on geometric vectors, which compares scanpaths over multiple dimensions while retaining positional and sequential information (Jarodzka, Holmqvist, & Nystr?m, Symposium on Eye-Tracking Research and Applications (pp. 211?C218), 2010). ??MultiMatch?? was tested in two experiments and pitted against ScanMatch (Cristino, Math?t, Theeuwes, & Gilchrist, Behavior Research Methods, 42, 692?C700, 2010), the most comprehensive adaptation of the popular Levenshtein method. In Experiment 1, we used synthetic data, demonstrating the greater sensitivity of MultiMatch to variations in spatial position. In Experiment 2, real eye movement recordings were taken from participants viewing sequences of dots, designed to elicit scanpath pairs with commonalities known to be problematic for algorithms (e.g., when one scanpath is shifted in locus or when fixations fall on either side of an AOI boundary). The results illustrate the advantages of a multidimensional approach, revealing how two scanpaths differ. For instance, if one scanpath is the reverse copy of another, the difference is in the direction but not the positions of fixations; or if a scanpath is scaled down, the difference is in the length of the saccadic vectors but not in the overall shape. As well as having enormous potential for any task in which consistency in eye movements is important (e.g., learning), MultiMatch is particularly relevant for ??eye movements to nothing?? in mental imagery and embodiment-of-cognition research, where satisfactory scanpath comparison algorithms are lacking. 相似文献
Charitable giving entails the act of foregoing personal resources in order to improve the conditions of other people. In the present paper, we systematically examine two dimensions integral to donation decisions that have thus far received relatively little attention but can explain charitable behavior rather well: the perceptions of cost for the donor and benefit for the recipients. In line with current theories in judgment and decision making, we hypothesize that people weigh these dimensions subjectively and perceive them asymmetrically, consistent with prospect theory. Costs for the donor are typically perceived as losses, whereas benefits for recipients are perceived as gains. In four studies, we presented several scenarios to participants in which both donation amounts (costs) and number of lives helped (benefits) were manipulated while keeping the ratio of costs and benefits constant. Results from Studies 1 and 2 showed that willingness to help decreased as donation amounts and number of lives helped increased. Additionally, Studies 3 and 4 provide evidence for a solution to reduce the asymmetry and increase donation amounts as the number of lives at risk increases. 相似文献