工作记忆表征捕获眼动中的颜色优先性

刺激属性所具有的引导效力在工作记忆表征自上而下地引导注意捕获过程中起重要作用, 已有研究表明工作记忆表征的颜色属性在引导注意时具有一定的优势。研究采用工作记忆任务与视觉搜索任务相结合的双任务范式, 结合眼动追踪技术, 通过设置具有较强引导效力的颜色属性与朝向属性进行直接竞争的实验条件, 进一步考察工作记忆表征的颜色属性是否依然具有优先性。实验1发现工作记忆表征的颜色属性与朝向属性同时竞争眼动捕获时, 颜色属性表现出较强的优势, 而朝向属性单独呈现时并未表现出任何捕获效应。实验2与3进一步证实了颜色属性捕获眼动的优先性, 即当颜色属性在面临作为靶子属性的朝向属性的竞争时, 依然能捕获更多的注视点。这些结果直接证实了工作记忆表征的颜色属性在工作记忆表征的捕获眼动的过程中具有较强的引导效力, 相对于其他刺激属性(如朝向、形状)更具有优先性。     

Thoughts from a Safe Harbor: Commentary on The Problem of Thinking by Yvette Esprey

Yvette Esprey’s claim that race has the capacity to disrupt thinking in the analytic situation accords with my own experience. In this discussion I take up the question as to why ruptures that occur around race may have a special capacity to disrupt and disable analytic thinking. I look in detail at Esprey’s instructive clinical experience as it gives us a template, something to fall back on, in those moments when anxiety overwhelms us around a racial disruption. Such a template can settle us until we can restore a sense of self that is both raced and analytically focused on the rupture at hand with all its personal and social/historical resonances.     

The Relational–Linguistic Spiral: A Model of Language for Theology

This article attempts to sketch out a view of language as a relational–linguistic spiral by discussing some implications of the thought of Ludwig Wittgenstein for language in general. Language is cast as a spiral which revolves around a center of 'human relationality' that anchors all our speech and concepts but which revolves in an ever–widening way into an arena of meaning we call language. Language creates linguistic space for experience and invites one into these new experiences. The borders of our language are thus not the absolute limits of our world but the admitted limits of our experience. Because the enterprise of language is inherently open, there must be a space for theological language and for the possibility at least of the kind of experiences described therein. Tracing the relational 'vectors' involved in language can also provide a platform for theological and even inter–religious dialogue.     

Discontinuity of seen motion reduces the visual motion aftereffect

Would a motion-picture film of a rotating spiral induce a spiral aftereffect? This question was studied in two experiments in which Ss viewed an animated film of circles collapsing to a point. The rate of apparent motion of the collapsing circles and the discontinuity of motion—the length of jump between successively projected circles—were varied independently. A visual aftereffect like the spiral aftereffect was created. The aftereffect increased in strength and duration with the rate of motion, but at all rates of motion it declined as discontinuity of motion increased. The results are taken as evidence that motion aftereffects are caused by selective fatigue of small, directionally sensitive motion-receptive fields.     

Adaptation to spiral motion in crowding condition

When a single, moving stimulus is presented in the peripheral visual field, its direction of motion can be easily distinguished, but when the same stimulus is flanked by other similar moving stimuli, observers are unable to report its direction of motion. In this condition, known as 'crowding', specific features of visual stimuli do not access conscious perception. The aim of this study was to investigate whether adaptation to spiral motion is preserved in crowding conditions. Logarithmic spirals were used as adapting stimuli. A rotating spiral stimulus (target spiral) was presented, flanked by spirals of the same type, and observers were adapted to its motion. The observers' task was to report the rotational direction of a directionally ambiguous motion (test stimulus) presented afterwards. The directionally ambiguous motion consisted of a pair of spirals flickering in counterphase, which were mirror images of the target spiral. Although observers were not aware of the rotational direction of the target and identified it at chance levels, the direction of rotation reported by the observers during the test phase (motion aftereffect) was contrarotational to the direction of the adapting spiral. Since all contours of the adapting and test stimuli were 90 degrees apart, local motion detectors tuned to the directions of the mirror-image spiral should fail to respond, and therefore not adapt to the adapting spiral. Thus, any motion aftereffect observed should be attributed to adaptation of global motion detectors (ie rotation detectors). Hence, activation of rotation-selective cells is not necessarily correlated with conscious perception.     

The Dynamics of Creative Teaching

The following is a qualitative portrait of a creative teacher and her teaching process. Over a period of six months, five interviews were conducted with the teacher before, during, and following a university course in teacher education on instructing diverse learners. Additional interviews were conducted with six students at the beginning and end of the course and with the teacher's husband following the course. Additional data sets include classroom observations revealed in field notes, personal memos, and course materials. The overarching themes represented constructs involving intense and thorough course preparation, teacher‐student connections, and reflective teaching. Sub‐themes guiding the process of creative teaching emerged including constraints placed on preparation and reflective teaching, an awareness of self and students within the process of preparation and connection, feedback from colleagues and students guiding the connection and reflective teaching, and the values and goals formed from personal history and philosophy of life shaping all three major themes. This case study of creative teaching possesses characteristics resembling creative acts in other domains (e.g., art, literature, physics, economics) and presents a model for the education of future teachers.     

场景情境和目标模板在视觉搜索中的交互作用

以真实场景图像中的物体搜索为实验任务, 操纵场景情境和目标模板, 采用眼动技术将搜索过程分为起始阶段、扫描阶段和确认阶段, 考察场景情境和目标模板对视觉搜索过程的影响机制。结果发现, 场景情境和目标模板的作用方式及时间点不同, 二者交互影响搜索的正确率和反应时, 仅场景情境影响起始阶段的时间, 随后二者交互影响扫描阶段和确认阶段的时间及主要眼动指标。作者由此提出了场景情境和目标模板在视觉搜索中的交互作用模型。     

It takes two to tango: An interdependence analysis of the spiraling of perceived trustworthiness and cooperation in interpersonal and intergroup relationships

We present three spiral reinforcement models that describe how mutual perceptions of trustworthiness and/or mutual cooperation may develop in dyadic interpersonal and intergroup relationships: a perceived trustworthiness spiral model, a cooperation spiral model, and a perceived trustworthiness-cooperation spiral model that posits a relatively more complex spiraling between trustworthiness perceptions and cooperation. Actor-Partner Interdependence Model (Kashy & Kenny, 2000) analyses of data from two joint venture business simulations provided support for the spiral models in interpersonal and intergroup relationships. While all three models received some support, the perceived trustworthiness-cooperation spiral received the most consistent support, suggesting that trust perceptions play a crucial mediating role in the development of cooperation in both interpersonal and intergroup interactions. Overall, it does “take two to tango”: the development of mutual trust and cooperation involves an intricate dance that spirals over time and is fundamentally affected by partners’ initial moves.     

Informative cues can slow search: The cost of matching a specific template

During visual search, observers hold in mind a search template, which they match against the stimulus. To characterize the content of this template, we trained observers to discriminate a set of artificial objects at an individual level and at a category level. The observers then searched for the objects on backgrounds that camouflaged the features that defined either the object’s identity or the object’s category. Each search stimulus was preceded by the target’s individual name, its category name, or an uninformative cue. The observers’ task was to locate the target, which was always present and always the only figure in the stimulus. The results showed that name cues slowed search when the features associated with the name were camouflaged. Apparently, the observers required a match between their mental representation of the target and the stimulus, even though this was unnecessary for the task. Moreover, this match involved all distinctive features of the target, not just the features necessary for a definitive identification. We conclude that visual search for a specific target involves a verification process that is performed automatically on all of the target’s distinctive features.     

The effect of uncertainty on the detection of frequency modulation at low modulation rates

Frequency modulation detection performance is compared in two conditions of stimulus variability. The data show that when the modulation rate is randomized within an experimental block, performance is somewhat poorer than when the modulation rate is fixed. The results are interpreted within the framework of a template matching model for modulation detection. They suggest that a template is acquired in part from experimental context and in part from a multistage template matching process.     

The after effect of seen movement on a plain field

Twenty laboratory subjects were asked to fixate the centre of a rotating spiral disc, under conditions where all of them, on stopping the disc, obtained the well known illusion of apparent expansion outwards. In this experiment, instead of stopping the disc, a completely uniform white surface was substituted and it was found that though the borders of the surface appeared to remain still, the surface itself showed apparent expansion in nearly all cases.     

The Development of Attention and Its Relations to Language in Infancy and Toddlerhood

We investigated longitudinally the development of attention in two free-play tasks and the relation between attention in those tasks and language ability in toddlerhood. We observed developmental differences in attention from 9 and 31 months both as children investigated a single object and as they investigated multiple objects. Attention in these contexts at 9 months was differentially related to vocabulary at 31 months, but concurrent measures of attention at 31 months were not related to vocabulary at that age. The results are discussed in terms of the potential processes guiding the relation between attention and cognitive outcome and the development of endogenous control of attention.     

Sedation threshold and Archimedes spiral after-effect: A follow-up of their use with civilian psychiatric patients

In the study reported here an attempt was made to confirm, on a more heterogeneous group of civilian patients, some previous work on sedation threshold and spiral after-effect in young military patients. Sedation threshold and spiral after-effect data were collected in thirty-eight neurotic and nine psychotic patients. The main findings of the study were as follows: (1) The practicability and reliability of the sedation threshold technique used is not restricted to the experimental setting in which it was originally devised. The method can on the contrary be applied under a variety of clinical conditions. (2) No significant differences were found in the uniformly high sedation threshold and spiral aftereffect scores of patients suffering from neurotic depression, obsessional neurosis, and chronic anxiety. Further, civilian dysthymics as a whole did not differ significantly on either test from military dysthymics. The previous work on neurotics was thus confirmed. (3) Previous findings (with military psychotics) of a significant negative correlation between sedation threshold and spiral after-effect were confirmed in the present group of schizophrenic patients.

The advantages of a psychophysiological approach to personality were reaffirmed and the possible usefulness of the sedation threshold and spiral after-effect as tools for differential diagnosis was discussed.     

Last but not least.

New variations of the spiral illusion are demonstrated. They include spiral illusions of the Café Wall illusion and the Z?llner illusion, as well as other new orientation illusions. Thus the spiral illusion is not limited to the Fraser illusion. We discuss the role that detectors of spirals in a higher visual area might play in the spiral illusion.     

Should Common Optimal Movement Patterns Be Identified as the Criterion to Be Achieved?

Recently, a new paradigm has been proposed for the study of knowledge of performance (Schmidt & Young, 1991). In this paradigm, the experimenters identified an optimal kinematic movement pattern, based on the performance of a best subject, which was imposed on all subjects as the criterion to achieve. This approach, which assumes that this pattern is the best way for all subjects to do the task, was tested in the present experiment. In Experiment 1, a common optimal movement pattern could not be identified by an analysis of scatterplot graphs of the scores plotted as a function of various kinematic vanables or by correlating (within and across subjects [N = 14]) each kinematic variable with the score. In Experiment 2, subjects (N = 12) were retrained in 2 separate sessions, during which they tried to reproduce either a personal best or the best subject's template. Results indicated that scores were similar regardless of the template pattern being used. During training, however, subjects who used their personal template had a lower incidence of zero scores and were more consistent than those who used the template of the best subject. This provided a second line of evidence against the assumption that a common optimal movement pattern exists for this type of task.     

Contextuality and Catholicity: The Task of Orthodox Theology in Ecumenical Theological Education

The essay unfolds theological foundations for theological education in ecumenical perspective from Orthodox perspectives seeing it as a worldwide enterprise fundamental to the mission of the church, not in its institutional character, but in its eschatological awareness of being a foretaste of the Kingdom of God. The relation between early ecumenical optimism and enthusiasm towards the goal of the visible unity of the church and the wide application of contextuality, i.e. the recognition of the contextual character of theology as a method from the 1970s onwards is discussed. According to the Orthodox perspectives, the ecumenical movement has lost its momentum and coherence and its determination for the quest of visible unity with the predominant acceptance of contextuality as the guiding principle in ecumenical discussions and theological education. The author argues that Orthodox theology has to deepen the understanding of its own contextuality and soften the existing antithesis between contextuality and catholicity of theology and theological education. Orthodox perspectives should underline the relevance of a fundamental unity of divine revelation, as represented in the broad understanding of Christian tradition, which is for the entire created world, not only for believers and which is challenging both a potential distortion, wherein unity is identified with the maintenance of denominational loyalty, as well as all contextual expressions of Christian theology with regard to their relation to the overall goal of church unity. The paper concludes with a plea for all Orthodox theological education to be of some real service to the church in deciding to deal both with current issues (to be contextual) and not to lose sight of the past (to be oriented to catholicity and church unity), to both open up to ecumenical theological education while at the same time maintaining a strong commitment to the common church tradition.     

The Life of Leaders: An Intensive Health Program for Clergy

Clergy suffer from chronic disease rates that are higher than those of non-clergy. Health interventions for clergy are needed, and some exist, although none to date have been described in the literature. Life of Leaders is a clergy health intervention designed with particular attention to the lifestyle and beliefs of United Methodist clergy, directed by Methodist LeBonheur Healthcare Center of Excellence in Faith and Health. It consists of a two-day retreat of a comprehensive executive physical and leadership development process. Its guiding principles include a focus on personal assets, multi-disciplinary, integrated care, and an emphasis on the contexts of ministry for the poor and community leadership. Consistent with calls to intervene on clergy health across multiple ecological levels, Life of Leaders intervenes at the individual and interpersonal levels, with potential for congregational and religious denominational change. Persons wishing to improve the health of clergy may wish to implement Life of Leaders or borrow from its guiding principles.     

The value history: A necessary family document

Patients' wishes regarding health care and dying must be taken into consideration by their physicians. Competent patients need to record directives about their care in advance of a crisis situation. The primary care physician, seeing the patient at the time of a routine office visit, is in a favorable position to explore and record attitudes. A patient's value system should be part of a medical history before hospital admission. Details in a Value History Questionnaire facilitate guiding an incompetent patient through a terminal illness in accordance with wishes previously expressed. An instrument in the form of a questionnaire was designed to record the attitudes of 200 patients regarding health care and dying. Respondents ranged in age from 17 to 84 years, and all were members of one family practice. They reacted positively to the opportunity to record their values, opinions, and wishes about their health care and process of dying. They clearly indicated that, in the absence of prior directives, they would want their families consulted about crucial decisions.     

Human and Animal Subjects of Research: The Moral Significance of Respect versus Welfare

Human beings with diminished decision-making capacities are usually thought to require greater protections from the potential harms of research than fully autonomous persons. Animal subjects of research receive lesser protections than any human beings regardless of decision-making capacity. Paradoxically, however, it is precisely animals’ lack of some characteristic human capacities that is commonly invoked to justify using them for human purposes. In other words, for humans lesser capacities correspond to greater protections but for animals the opposite is true. Without explicit justification, it is not clear why or whether this should be the case. Ethics regulations guiding human subject research include principles such as respect for persons—and related duties—that are required as a matter of justice while regulations guiding animal subject research attend only to highly circumscribed considerations of welfare. Further, the regulations guiding research on animals discount any consideration of animal welfare relative to comparable human welfare. This paper explores two of the most promising justifications for these differences␣between the two sets of regulations. The first potential justification points to lesser moral status for animals on the basis of their lesser capacities. The second potential justification relies on a claim about the permissibility of moral partiality as␣found in common morality. While neither potential justification is sufficient to justify the regulatory difference as it stands, there is possible common ground between supporters of some regulatory difference and those rejecting the current difference.     

The effect of evolving resource synergy beliefs on the intentions–behavior discrepancy in ethical consumption

Consumers are less likely to buy ethical products than their stated intentions in marketplace polls, due at least in part to the distinct temporal frames guiding their poll responses versus actual purchase decisions. We propose that as consumers' beliefs about the synergy between the resources a firm devotes to their ethical and functional attributes evolve, as part of the broader ethical marketing/corporate social responsibility movement, from negative to positive, this discrepancy between intentions and behavior is likely to disappear. Two studies provide support for this basic contention, implicating the importance consumers ascribe to a brand's ethical attribute as the driver of the temporal frame- and resource synergy beliefs-based differences in their preference for that brand.