Characteristics of the interaction of Cu-rich precipitates with irradiation-produced defects in α-Fe

The interaction between copper-rich precipitates in α-iron and either vacancies or self-interstitial atoms and their clusters is studied by atomic-scale modelling. Results are compared with predictions of elasticity theory and interpreted in terms of size misfit of precipitates and defects, and the modulus and cohesive energy differences between iron and copper. Interstitial defects are repelled by precipitates at large distance but, like vacancies, attracted at small distance. Hence, copper precipitates in iron can be sinks for both vacancy and interstitial defects, and can act as strong recombination centres under irradiation conditions. This leads to a tentative explanation for the mixed Cu–Fe structure of precipitates and the absence of precipitate growth under neutron irradiation conditions. More generally, both vacancy and interstitial defects may be strongly bound to precipitates with weaker cohesion than the matrix.     

Anchor effects in decision making can be reduced by the interaction between goal monitoring and the level of the decision maker’s executive functions

Models of decision making postulate that interactions between contextual conditions and characteristics of the decision maker determine decision-making performance. We tested this assumption by using a possible positive contextual influence (goals) and a possible negative contextual influence (anchor) in a risky decision-making task (Game of Dice Task, GDT). In this task, making advantageous choices is well known to be closely related to a specific decision maker variable: the individual level of executive functions. One hundred subjects played the GDT in one of four conditions: with self-set goal for final balance (n?=?25), with presentation of an anchor (a fictitious Top 10 list, showing high gains of other participants; n?=?25), with anchor and goal definition (n?=?25), and with neither anchor nor goal setting (n?=?25). Subjects in the conditions with anchor made more risky decisions irrespective of the negative feedback, but this anchor effect was influenced by goal monitoring and moderated by the level of the subjects' executive functions. The findings imply that impacts of situational influences on decision making as they frequently occur in real life depend upon the individual's cognitive abilities. Anchor effects can be overcome by subjects with good cognitive abilities.     

The critical distance of interaction in the Zöllner illusion

Two experiments attempted to de termine the distance (as visual angle) over which the Zöllner distortion of a straight line could be produced by a background field. Experiment 1 showed that the background lines did not need to intersect the test line in order to distort it but could exert this effect up to a distance of 1 deg visual angle from it. Experiment 2 indicated that when the background lines do intersect the test line portions of these formed beyond an angle of 1 deg do not contribute to the distortion. These values may indicate the size of the cortical receptive fields interacting to produce the illusion.     

The closer the relationship, the more the interaction on facebook? Investigating the case of Taiwan users

This study argues for the necessity of applying offline contexts to social networking site research and the importance of distinguishing the relationship types of users' counterparts when studying Facebook users' behaviors. In an attempt to examine the relationship among users' behaviors, their counterparts' relationship types, and the users' perceived acquaintanceships after using Facebook, this study first investigated users' frequently used tools when interacting with different types of friends. Users tended to use less time- and effort-consuming and less privacy-concerned tools with newly acquired friends. This study further examined users' behaviors in terms of their closeness and intimacy and their perceived acquaintanceships toward four different types of friends. The study found that users gained more perceived acquaintanceships from less close friends with whom users have more frequent interaction but less intimate behaviors. As for closer friends, users tended to use more intimate activities to interact with them. However, these activities did not necessarily occur more frequently than the activities they employed with their less close friends. It was found that perceived acquaintanceships with closer friends were significantly lower than those with less close friends. This implies that Facebook is a mechanism for new friends, rather than close friends, to become more acquainted.     

Does suppressing the thought of a self-relevant stigma affect interpersonal interaction?

In the current study, we examined the effects of women's suppressing negative gender stereotypes while interacting with a male confederate. Compared with control participants, those who suppressed negative thoughts about women's ability experienced less self-confidence, lower self-esteem, and were more nonverbally submissive during the interaction, particularly if they were high in stigma consciousness (Pinel, 1999). These findings illustrate the negative intra- and interpersonal consequences of stigma suppression.     

Sensitivity to social contingency or stability of interaction? Modelling the dynamics of perceptual crossing

We introduce a series of evolutionary robotics simulations that address the behaviour of individuals in socially contingent interactions. The models are based on a recent study by Auvray, Lenay and Stewart [(2006). The attribution of intentionality in a simulated environment: The case of minimalist devices. In Tenth meeting of the association for the scientific study of consciousness, Oxford, UK, 23-26 June, 2006] on tactile perceptual crossing in a minimal virtual environment. In accordance, both the empirical experiments and our simulations point out the essential character of global embodied interaction dynamics for the sensitivity to contingency to arise. Rather than being individually perceived by any of the interactors, sensitivity to contingency arises from processes of circular causality that characterise the collective dynamics. Such global dynamical aspects are frequently neglected when studying social cognition. Furthermore, our synthetic studies point out interesting aspects of the task that are not immediately obvious in the empirical data. They, in addition, generate new hypotheses for further experiments. We conclude by promoting a minimal but tractable, dynamic and embodied account to social interaction, combining synthetic and empirical findings as well as concrete predictions regarding sensorimotor strategies, the role of time-delays and robustness to perturbations in interactive dynamics.     

Profiles of competence and adaptation in preschoolers as related to the quality of parent–child interaction

In a sample of 107 five-year-olds, cluster analysis was used to identify groups of children with similar profiles of competence and adaptation. A comprehensive set of child characteristics was included in the analysis, together covering the most important aspects of five-year-olds’ development and functioning. Three groups of children emerged, which were labeled Well-adapted/Competent, Underachieving/Internalizing, and Maladapted/Externalizing. Well-adapted/Competent children (59%) were competent and well-adjusted in all domains. The Maladapted/Externalizing children (22%) scored low in almost all domains of competence and functioning, and the Underachieving/Internalizing children (22%) showed a mixed profile of competence and adaptation. The differences in the quality of parent–child interaction that were observed between the groups provide clues as to how the different profiles of competence and adaptation are shaped and maintained in the interactions with parents.     

By name or by deed? Identifying the source of the feminist stigma

Prejudice and discrimination against feminists were explored across two contexts, a workplace and a social setting. We examined university students' reactions to a woman who called herself a feminist, behaved like a feminist by challenging sexism, did both, or did neither. In Study 1, participants (N = 177) evaluated a job candidate less favorably when she called herself a feminist after controlling for perceived assertiveness and participants' feminist self‐identification. However, our results showed no evidence of hiring discrimination. In Study 2, participants (N = 184) evaluated a peer less favorably and were less willing to befriend and date her when she called herself a feminist, controlling for perceived assertiveness. Participants were also less willing to befriend her when she behaved like a feminist. The contextual nature of the feminist stigma and the influence of perceived assertiveness are discussed.     

Turning up the noise or turning down the volume? On the nature of the impairment of episodic recognition memory by midazolam

E. Hirshman, J. Fisher, T. Henthom, J. Amdt, and A. Passanname (2002) found that Midazolam disrupts the mirror-patterned word-frequency effect for recognition memory by reversing the typical hit-rate advantage for low-frequency words. They noted that this result is consistent with dual-process accounts (e.g., R. C. Atkinson & J. F. Juola, 1974; G. Mandler, 1980; A. P. Yonelinas, 1994) of the word frequency effect for recognition memory (S. Joordens & W. E. Hockley. 2000; L. M. Reder et al. 2000). The present authors show that this finding is also consistent with a variety of single-process, retrieving effectively- from-memory (REM) models (R. M. Shiffrin & M. Steyvers, 1997), the simplest of which assumes that Midazolam decreases the accuracy with which memory traces are stored. These findings therefore do not discriminate between single- and dual-process models of recognition memory.     

Is the emotional modulation of the attentional blink driven by response bias?

Several studies have shown that the attentional blink (AB; Raymond, Shapiro, & Arnell, 1992) is diminished for highly arousing T2 stimuli (e.g., Anderson, 2005). Whereas this effect is most often interpreted as evidence for a more efficient processing of arousing information, it could be due also to a bias to report more arousing stimuli than neutral stimuli. We introduce a paradigm that allows one to control for such a response bias. Using this paradigm, we obtained evidence that the diminished AB for taboo words cannot be explained by a response bias. This supports the idea that the emotional modulation of the AB is caused by attentional processes.     

Effect of task difficulty on the division of attention between nonverbal signals: Independence or interaction?

Models of divided attention are grouped into two classes according to whether they assume that efficiency on one task is independent of or interacts with the level of difficulty on a second simultaneously performed task. On the basis of contradictory evidence from previous studies, four necessary requirements are proposed for an empirical test between the two classes of model. Two experiments successfully embodying these requirements were run, in which subjects performed a two-choice recognition task, involving frequency and intensity signals presented together and alone. The independent variable was the level of difficulty on one dimension; the dependent variable was the accuracy of performance on a second dimension presented at the same time. The results from both experiments showed an interactive trend, performance becoming worse as the difficulty of the accompanying task was increased. In neither case was the effect significant. When pooled over experiments the effect appeared to be reliable, although small. The outcome is interpreted as supporting interactive models of divided attention rather than independent models. Possible reasons for the smallness of the effect are considered. The most likely reason appears to be the competing demands between two of the test requirements adopted initially. An alternative to one of the requirements is proposed.     

Is the benefit of retrieval practice modulated by motivation?

Retrieval practice tends to produce better long-term learning than rereading, but laboratory studies have typically used arbitrary material that subjects may not care to learn. The observed advantage of retrieval practice may be exaggerated because low motivation may result in deficient processing during (usually passive) rereading. Thus, when subjects are motivated to learn the material, the type of study strategy (whether retrieval practice or rereading) might be less important. To test this hypothesis, we conducted 3 experiments in which we manipulated the incentives (using monetary bonuses or time savings) for learning Swahili–English word pairs. Items that had undergone retrieval practice were better recalled than reread items on a final test 2 days later, but this effect did not interact with incentive level. These results provide some reassurance that lab findings from the testing effects literature likely generalize to real-world situations in which motivation to learn may be greater.     

What Does Heidegger Mean by the Transcendence of Dasein?

Abstract

In this paper, I shall examine the evolution of Heidegger’s concept of ‘transcendence’ as it appears in Being and Time (1927), ‘On the Essence of Ground’ (1928) and related texts from the late 1920s in relation to his rethinking of subjectivity and intentionality. Heidegger defines Being as ‘transcendence’ in Being and Time and reinterprets intentionality in terms of the transcendence of Dasein. In the critical epistemological tradition of philosophy stemming from Kant, as in Husserl, transcendence and immanence are key notions (see Husserl, The Idea of Phenomenology, 1907, and Ideas I, 1913). Indeed, ‘transcendence in immanence’ is a leitmotif of Husserl’s phenomenology. Husserl discusses transcendence in some detail in Cartesian Meditations §11 in a manner that is not dissimilar to Heidegger. Heidegger is critical of Husserl’s understanding of consciousness and intentionality and Heidegger deliberately chooses to discuss transcendence as an exceptional domain for the discussion of beings in his ‘On the Essence of Ground’, his submission to Husserl’s seventieth-birthday Festschrift. Despite his championing of a new concept of transcendence in the late 1920s, Heidegger effectively abandons the term during the early 1930s. In this paper, I shall explore Heidegger’s articulation of his new ontological conception of finite transcendence and compare it with Husserl’s conception of the transcendence of the ego in order to get clearer what is at stake in Heidegger’s conceptions of subjectivity, Dasein and transcendence.     

The underdetermination of theory by data and the “strong programme” in the sociology of knowledge

Advocates of the “strong programme” in the sociology of knowledge have argued that, because scientific theories are “underdetermined” by data, sociological factors must be invoked to explain why scientists believe the theories they do. I examine this argument, and the responses to it by J.R. Brown (1989) and L. Laudan (1996). I distinguish between a number of different versions of the underdetermination thesis, some trivial, some substantive. I show that Brown's and Laudan's attempts to refute the sociologists' argument fail. Nonetheless, the sociologists' argument falls to a different criticism, for the version of the underdetermination thesis that the argument requires, has not been shown to be true.     

Do developmental and temperamental characteristics mediate the association between preterm birth and the quality of mother-child interaction?

BackgroundThe current study aims to evaluate the association between preterm birth and the quality of mother-child interaction of very preterm-, moderate preterm-, and full-term-born children at 18 and 36 months and to determine whether developmental and behavioral characteristics mediate the association between preterm birth and the quality of mother-child interaction.MethodParticipants included 110 preterm-born children and 39 full-term-born children assessed at ages 18 and 36 months. Mother-child free play interactions, the Mullen Scales of Early Learning, the Infant Behavior Questionnaire, and the Early Childhood Behavior Questionnaire were administered.ResultsSignificant associations between preterm birth and the quality of mother-child interaction were found at 18 and 36 months. The mother-child interaction quality was less optimal for the preterm-born children compared with the full-term-born children, mainly so for the very preterm-born children. Unlike behavioral characteristics, cognitive development was found to mediate the association between the gestational age-based group and the quality of mother-child interaction.ConclusionsIntervention programs for preterm-born children and their families, should consider maternal and children’s behaviors during mother-child interactions, in addition to cognitive, language, motor and emotional regulation abilities, and particularly so with very preterm-born children, who exhibit slower cognitive development.     

How dynamic is interhemispheric interaction? Effects of task switching on the across-hemisphere advantage

Interaction between the cerebral hemispheres may allow both hemispheres to contribute their processing resources in order to cope efficiently with complex tasks [Banich, M. (1998). The missing link: the role of interhemispheric interaction in attentional processing. Brain and Cognition, 36, 128-157]. The current study investigated whether the benefits of interhemispheric interaction arise because of top-down knowledge about the task built up over the course of a block of trials or because of the processing demands present in a single trial. Participants performed a less computationally complex physical identity task and a more complex adding task on within-visual field and across-visual field trials. Task differences in interhemispheric interaction were compared between the blocked and mixed conditions to investigate whether frequent task switches altered the pattern of interhemispheric resource recruitment. A similar interaction between task difficulty and trial type (across- or within-visual field presentation) was obtained for both the blocked and mixed conditions. The degree of task-dependency of interhemispheric interaction was not altered in the mixed condition. This finding supports the view that interhemispheric interaction becomes beneficial in response to the processing demands of an individual trial rather than as a result of top-down task knowledge.     

Are people changed by the experience of having an episode of depression? A further test of the scar hypothesis

The purpose of this study was to identify characteristics of individuals before and after their first depressive episode. Subjects were 49 older persons assessed before and after their first depressive episode on depression-related psychosocial variables. The control group consisted of 351 never-depressed individuals. Consistent with previous findings, patients were more likely to be younger, female, and mildly depressed both before and after the episode. In addition, they were more likely to be employed. Following an episode of depression, the recovered patients described their social skills and health as poorer and their interpersonal dependency as greater than the controls. However, on an experiment-wise basis, the number of significant differences were no greater than expected by chance. The stress activation model was examined but did not appreciably enhance the results. Results suggest that most of the psychosocial variables associated with depression are state dependent.     

The modulation of spatial congruency by object-based attention: Analysing the “locus” of the modulation

In a diffusion model, performance as measured by latency and accuracy in two-choice tasks is decomposed into different parameters that can be linked to underlying cognitive processes. Although the diffusion model has been utilized to account for lexical decision data, the effects of stimulus manipulations in previous experiments originated from just one parameter: the quality of the evidence. Here we examined whether the diffusion model can be used to effectively decompose the underlying processes during visual-word recognition. We explore this issue in an experiment that features a lexical manipulation (word frequency) that we expected to affect mostly the quality of the evidence (the drift rate parameter), and a perceptual manipulation (stimulus orientation) that presumably affects the nondecisional time (the T_er parameter, time of encoding and response) more than it affects the drift rate. Results showed that although the manipulations do not affect only one parameter, word frequency and stimulus orientation had differential effects on the model's parameters. Thus, the diffusion model is a useful tool to decompose the effects of stimulus manipulations in visual-word recognition.     

Does the type of prompt affect the accuracy of information provided by alleged victims of abuse in forensic interviews?

Forty‐three victims of sexual abuse averaging 9.78 years of age and 52 youths who admitted abusing them were interviewed about the abusive incidents. Forensically relevant details provided by the victims were categorised as confirmed, contradicted or ignored by the perpetrators. Most (66.6%) of the details were ignored, but details were more likely to be confirmed when they were elicited using invitations (open‐ended free‐recall prompts) rather than focused prompts. However, similar effects were not evident with respect to contradictions. The results support predictions that information elicited using free‐recall prompts is more likely to be accurate than information elicited using focused prompts. Published in 2007 by John Wiley & Sons, Ltd.