记叙文中时间信息的事件边界效应

运用视知觉研究中经典的事件切割程序,探讨记叙文中时间信息的事件边界效应.结果发现记叙文中的时间信息会被读者外显地知觉为事件边界,并且,跨度长的时间信息比跨度短的时间信息更易于被知觉为事件边界.这和视知觉研究中的发现是一致的.研究在一定程度上支持了记叙文理解过程中情境模型建构的过程依赖类似于事件知觉中所发现的切割过程的观点,为知觉研究和认知研究领域提供了可供沟通的实证支持.     

Walking through doorways causes forgetting: active and passive interaction

ABSTRACT

The current study explored the location updating effect when people passively interacted with an environment. This was assessed experimentally by having one person actively navigate through a virtual environment while picking up and putting objects down. A second person passively viewed the movement. Both participants responded to memory probes for objects they encountered. Probes appeared when the active participant moved halfway across a room or immediately after moving into a new room. Consistent with previous research, a location updating effect was found. That is, memory was worse following a shift to a new room. This effect was found for both active and passive participants but was smaller for the passive group. Thus, the shift from one event to another causes information to be harder to remember, reinforcing the importance of event cognition in memory. However, the more involved a person is in the interactive event, the more pronounced the effects.     

Walking through doorways causes forgetting: environmental effects

Previous work has shown a decline in memory for objects carried through a doorway versus across a room. The aim of the current study is to extend this work to understand how variations in perceptual experience during these event shifts influence this finding. First a change in procedure to reduce memory load to a single item was assessed. Next we explored whether performance is influenced by spatial distance versus spatial categories, the ability to perceptually preview the next location, and changes in the colour and texture of the walls. The location updating effect was consistently observed for all manipulations, suggesting that such event transformations have a robust influence on human memory. This suggests that event cognition is driven more by the use of perceptual information to infer or impose a categorical shift from one event to another rather than by the nature of perceptual information available at the time.     

空间转换在记叙文阅读情境模型建构中的作用

采用探测词和事件分割范式探讨了空间转换与事件转换分离的情况下, 空间转换在记叙文情境模型建构中的作用。实验1a重复前人研究, 探讨空间转换对阅读时间和情境模型更新的影响, 并验证在空间转换对情境模型的影响的研究中, 采用多指标探测范式的合理性。实验1b探讨在空间转换与事件转换相分离的条件下, 空间转换对情境模型更新的影响; 实验2a探讨空间转换对事件分割的影响, 并验证在空间转换对情境模型的影响的研究中, 采用事件分割范式的合理性; 实验2b探讨空间转换与事件转换相分离的条件下, 空间转换对事件分割的影响, 从而验证空间转换对情境模型更新的影响。结果表明, 当空间转换与事件转换相分离时, 不引起情境模型的更新, 事件单元是建构记叙文心理表征的核心单元, 空间转换只有在标识事件转换的情况下, 才能引发读者更新情境模型。     

Mereotopological Connection

The paper outlines a model-theoretic framework for investigating and comparing a variety of mereotopological theories. In the first part we consider different ways of characterizing a mereotopology with respect to (i) the intended interpretation of the connection primitive, and (ii) the composition of the admissible domains of quantification (e.g., whether or not they include boundary elements). The second part extends this study by considering two further dimensions along which different patterns of topological connection can be classified – the strength of the connection and its multiplicity.     

A comparison of bounded diffusion models for choice in time controlled tasks

The Wiener diffusion model (WDM) for 2-alternative tasks assumes that sensory information is integrated over time. Recent neurophysiological studies have found neural correlates of this integration process in certain neuronal populations. This paper analyses the properties of the WDM with two different boundary conditions in decision making tasks in which the time of response is indicated by a cue. A dual reflecting boundary mechanism is proposed and its performance is compared with a well-established absorbing boundary in the cases of the WDM, the WDM with extensions, and the WDM with prior probability. The two types of boundary influence the dynamics of the model and introduce differential weighting of evidence. Comparisons with Ornstein-Uhlenbeck models are also done, and it is shown that the WDM with both types of boundary achieves similar performance and produces similar fits to existing behavioural data. Further studies are proposed to distinguish which boundary mechanism is more consistent with experimental data.     

Bounded Ornstein-Uhlenbeck models for two-choice time controlled tasks

The Ornstein-Uhlenbeck (O-U) model has been successfully applied to describe the response accuracy and response time in 2-alternative choice tasks. This paper analyses properties and performance of variants of the O-U model with absorbing and reflecting boundary conditions that limit the range of possible values of the integration variable. The paper focuses on choice tasks with pre-determined response time. The type of boundary and the growth/decay parameter of the O-U model jointly determine how the choice is influenced by the sensory input presented at different times throughout the trial. It is shown that the O-U models with two types of boundary are closely related and can achieve the same performance under certain parameter values. The value of the growth/decay parameter that maximizes the accuracy of the model has been identified. It is shown that when the boundaries are introduced, the O-U model may achieve higher accuracy than the diffusion model. This suggests that given the limited range of the firing rates of integrator neurons, the neural decision circuits could achieve higher accuracy employing leaky rather than linear integration in certain tasks. We also propose experiments that could distinguish between different models of choice in tasks with pre-determined response time.     

事件切割：我们如何知觉并记忆日常事件?

事件切割指的是人们将连续的外界信息析解成若干个有意义且互相关联的事件的过程, 实验室中通常使用事件切割任务对其进行研究。事件切割既包含自下而上的加工过程, 也有自上而下加工的成分。事件切割活动对记忆有着重要的影响, 个体知觉事件、回忆事件的能力被认为与其日常生活紧密相关。解释事件切割加工过程和特征的理论模型主要包括情境模型、事件切割理论和事件视界模型。未来的研究可以深入探讨事件记忆在不同测试类型上的差异, 并关注事件切割过程中的注意分配过程。     

Impact of coherent and incoherent twin boundaries on the microhardness of annealed nanocrystalline Ni–W alloys

The microstructural evolution of nanocrystalline Ni–W alloys with annealing temperature and more specifically grain boundary (GB) character is investigated through several techniques and correlated with the hardening behaviour. It is shown that two distinct regions can be identified in relation to the annealing temperature and the microstructural evolution. At temperatures below 550 °C (Regime I), a small increase in grain size is observed and is accompanied by a significant hardening and an increase in the fraction of Σ3 incoherent twin boundaries. At temperatures above 550 °C (Regime II), the thermal stability is overcome and important grain growth occurs with a decrease in both the volumic fraction of GBs and the microhardness. It is suggested that the microhardness evolution during heat treatment is influenced by two opposing processes: an increase in the fraction of incoherent twin boundaries (hardening effect) and grain growth (softening effect). Both aspects are directly associated with the mean free path of mobile dislocations.     

Clarifying subsystem boundaries in grandfamilies

This article explores the benefits of clarifying subsystem boundaries in grandfamilies, families in which grandparents are primary caregivers to their grandchildren. The author reviews what is known about grandfamilies, presents the theory and research behind the importance of clear subsystem boundaries, and argues that grandfamilies are particularly vulnerable to problematic subsystem boundaries. Case examples are used to demonstrate how clarifying subsystem boundaries with grandfamilies in family therapy can open up resources for improved family functioning.     

时间间隔与未来事件效价：解释水平的中介作用

通过考察解释水平, 诠释时间间隔和未来事件效价的双向关系。结果发现：时间间隔会影响人们对未来事件效价的感知, 高解释水平事件在长时间间隔后发生的感知效价更好, 而低解释水平事件在短时间间隔后发生的感知效价更好(研究1); 同时, 未来事件效价也会反向影响人们对时间间隔的感知, 相对于未来发生的正效价事件, 负效价事件的感知时间间隔更短(研究2)。无论是时间间隔对未来事件感知效价的影响, 还是未来事件效价对感知时间间隔的影响, 解释水平均在其中起到中介作用。     

Therapists’ experiences with internal representations of clients

Fourteen therapists were interviewed via telephone regarding their experience of “carrying around” their clients with them between sessions (i.e. internal representations, or IRs, of clients), a phenomenon about which little empirically based knowledge exists. Data were analyzed using consensual qualitative research. Findings indicated that overall, therapists have IRs infrequently, most often have IRs of clients struggling with severe or challenging presenting problems, and do receive some training about IRs. When describing a specific IR experience, therapists typically noted a strong therapy relationship, and stated that the IRs typically had specific triggers. The IRs generally consisted of feelings about the client, and typically consisted of thoughts about the client or the felt presence of the client. The IRs generally yielded positive effects, typically both personally and professionally, and were typically discussed with supervisors/consultants. Implications for research, training, and practice are presented.     

Symbolic Filtering: Selectively Permeable Evangelical Boundaries in an Age of Religious Pluralism

Since Peter Berger's (1967, The Sacred Canopy: Elements of a Sociological Theory of Religion, Garden City, NY: Doublday) early work on the sacred canopy, scholars have debated the effects of increased diversity on religious belief and vitality. Smith (1998, American Evangelicalism: Embattled and Thriving, Chicago: University of Chicago Press), in particular, has suggested that subcultures like American evangelicalism can thrive in a religiously pluralistic environment by both engaging with the world while remaining symbolically distinct from it. This article builds on this work as well as recent scholarship on boundary permeability by exploring the mechanisms by which American evangelicals negotiate their boundaries as they adapt to their surroundings. Based on a qualitative content analysis of 109 articles from two evangelical missionary periodicals published over a period of over 20 years, I examine the use of both boundary‐strengthening and boundary‐weakening processes employed by evangelical missionaries and missiologists (or “boundary agents”). I find that almost every instance of boundary weakening is also accompanied by boundary strengthening, suggesting that symbolic boundaries are becoming selectively permeable through a process I identify as “symbolic filtering.” In conclusion, the article briefly considers the implications of these findings for the broader discussion of symbolic boundaries and religious pluralism.     

Assessing Professional Boundaries in Clinical Settings: The Development of the Boundaries in Practice Scale

This article reports on the Boundaries in Practice (BIP) Scale developed to measure knowledge, comfort, ethical decision making, and experience. Few instruments used in studies conducted on professional/?client boundaries have been validated. The BIP demonstrated sound face, content and construct validity, and adequate internal consistency reliability. The BIP Scale provides the first reliable and valid means of investigating multiple boundary domains across health disciplines and teams. The sensitivity and complexity of boundary issues and the serious consequences of breaches highlight the importance of a valid and reliable measure in building empirical knowledge in this field.     

Revisiting Louis de Broglie's famous 1924 paper in the Philosophical Magazine

De Broglie's contribution in the Philosophical Magazine from 1924 is fascinating from many standpoints: for its moderate use of mathematics, the close connection to Einstein's special theory of relativity, and of course for the proposal of matter waves. We revisit this mostly speculative publication, which contributed crucially to the birth of quantum mechanics.     

Professional Boundary Ethics Attitudes and Awareness Among Nurses and Physicians in a University Hospital in the Kingdom of Saudi Arabia

This study sought to gauge ethical attitudes about professional boundary issues of physicians and nurses in the Kingdom of Saudi Arabia. Respondents scored 10 relevant boundary vignettes as to their ethical acceptability. The group as a whole proved “aware/ ethically conservative,” but with the physicians' score falling on the “less ethically conservative” part of the spectrum compared to nurses. The degree of ethicality was more related to profession than to gender, with nurses being more “ethical” than physicians.     

Boundary regulation in family and personal systems: Perceptions of late adolescents

Examination of boundary regulation can provide family therapists with a framework to describe both the functioning of family systems and personal systems (i.e., the intrapsychic functioning of individual family members). In the present study, late adolescents' perceptions of boundary regulation within their family systems (i.e., ratings of family health, communication, leadership, expressiveness, cohesion, and family conflict) were related to regulation of their personal boundaries (i.e., self-reported personal competence, distress, and patterns of defense mechanism use). In addition, personal system variables reliably discriminated between adolescents who described their families as psychologically healthy versus psychologically unhealthy.     

TEM study of defects generated in 4H-SiC by microindentations on the prismatic plane

The deformation microstructure of single crystals of 4H-SiC resulting from microindentations on a prismatic surface was investigated by TEM. Indentations were performed at 400 and 675°C, i.e. below the brittle to ductile transition temperature of 4H-SiC (temperature close to 1100°C). TEM analysis reveals dissociated dislocations as well as extended stacking faults in the basal plane. In addition, perfect edge dislocations are observed on prismatic planes. From the observations, it is assumed that perfect dislocations are nucleated in the prismatic plane and cross-slip on the basal one where they dissociate.