Effect of severe plastic deformation on the coercivity of Co–Cu alloys

Cast Co–5.6 wt% Cu and Co–13.6 wt% Cu alloys were subjected to severe plastic deformation (SPD) by high-pressure torsion (HPT). The HPT treatment drastically decreases the size of the Co grains (from 20 µm to 100 nm) and the Cu precipitates (from 2 µm to 10 nm). As a result, the coercivity H _c of both the alloys radically increases. The saturation magnetization, M _s, remains almost unchanged. Thus, SPD of the bulk samples opens the way for drastic increase in the coercivity for the Co-based alloys.     

Dynamic functional connectivity: causative or epiphenomenal?

Dynamic coupling of neural signals is a hallmark of brain networks, but its potential relevance is still debated. Does coupling play a causal role for network functions, or is it just a by-product of structural connectivity or other physiological processes? With intervention techniques that have become available, experiments seem within reach that may provide answers to this long-standing question.     

Development of the other-race effect during infancy: Evidence toward universality?

The other-race effect in face processing develops within the first year of life in Caucasian infants. It is currently unknown whether the developmental trajectory observed in Caucasian infants can be extended to other cultures. This is an important issue to investigate because recent findings from cross-cultural psychology have suggested that individuals from Eastern and Western backgrounds tend to perceive the world in fundamentally different ways. To this end, the current study investigated 3-, 6-, and 9-month-old Chinese infants’ ability to discriminate faces within their own racial group and within two other racial groups (African and Caucasian). The 3-month-olds demonstrated recognition in all conditions, whereas the 6-month-olds recognized Chinese faces and displayed marginal recognition for Caucasian faces but did not recognize African faces. The 9-month-olds’ recognition was limited to Chinese faces. This pattern of development is consistent with the perceptual narrowing hypothesis that our perceptual systems are shaped by experience to be optimally sensitive to stimuli most commonly encountered in one’s unique cultural environment.     

Errors in proofreading: Evidence for syntactic control of letter processing?

The present study compared the rates of detection of misspellings in content and in function words, controlling for the effects of familiarity by studying verbs that could be either content words or function words according to the context. In agreement with previous studies, it was found that errors were more readily detected in content words than in function words, thereby clearly demonstrating the importance of syntactic factors in processing the words in a text. Unlike previous studies, we did not find consistent evidence that errors changing the overall word shape were detected more easily than errors preserving word shape, and we found no evidence that the position of the error in the word affected its rate of detection. These findings were interpreted in the framework of an interactive approach to the reading process.     

Delayed self-recognition in 2.5-year-old children: Evidence of a restricted sense of self?

In two experiments, we explored whether 2.5-year-olds can use delayed video information to locate objects placed somewhere covertly after first being given pre-test video experience. Our findings revealed that children had little difficulty passing a surprise-object task, that is, a teddy bear hidden in a box that was placed behind the child and hence only visible in the delayed video. In contrast, the children did not pass the surprise-mark task or delayed self-recognition (DSR) task, even with pre-test video training. Similarly, delayed self-image experience and pre-test video training did not facilitate DSR performance in 2.5-year-olds. Children were also just as likely to fail a live video self-recognition task, suggesting that object-retrieval tasks pertaining to self using video information are difficult for children at this age. The findings are discussed in light of possible changes in representational capabilities; the implications for the development of a temporally extended self are also noted.     

Is Probabilistic Evidence a Source of Knowledge?

We report a series of experiments examining whether people ascribe knowledge for true beliefs based on probabilistic evidence. Participants were less likely to ascribe knowledge for beliefs based on probabilistic evidence than for beliefs based on perceptual evidence (Experiments 1 and 2A) or testimony providing causal information (Experiment 2B). Denial of knowledge for beliefs based on probabilistic evidence did not arise because participants viewed such beliefs as unjustified, nor because such beliefs leave open the possibility of error. These findings rule out traditional philosophical accounts for why probabilistic evidence does not produce knowledge. The experiments instead suggest that people deny knowledge because they distrust drawing conclusions about an individual based on reasoning about the population to which it belongs, a tendency previously identified by “judgment and decision making” researchers. Consistent with this, participants were more willing to ascribe knowledge for beliefs based on probabilistic evidence that is specific to a particular case (Experiments 3A and 3B).     

Evidence of a metacognitive benefit to memory?

Studies of the memory-control framework have contrasted free-report and forced-report recall, with little regard to the order of these two tests. The present experiment sought to demonstrate that test order is crucial, and that this suggests a potential role for metacognitive monitoring on memory retrieval. Participants undertook tests of episodic and semantic memory in both free- and forced-report format, in one of the two potential response orders. This showed that free-report performance was more accurate if conducted prior to forced-report, rather than after it, with no cost to memory quantity. Additionally, there was a trend towards higher forced-report performance if it was preceded by an initial free-report test, a pattern revealed by a meta-analysis to be consistent with previous studies in the literature. These findings suggest a reciprocal relationship between metacognitive monitoring and early retrieval processes in memory that results in higher memory performance when monitoring is encouraged.     

The Primacy of the “Shoulds”: Where Is the Evidence?

A central tenet of rational emotive behaviour therapy (REBT) has always been that irrational beliefs which express demands through absolutistic shoulds, musts or oughts are the basic cause of emotional disturbance. This premise is characteristic of Ellis' theory but is not always supported by other REBT writers or other writers within the cognitive therapy field. This paper reviews a range of research findings which appear to call into question Ellis' tenet of the primacy of the shoulds and which, in turn, raise theoretical and methodological difficulties in the measurement of beliefs. This along with the current theoretical debate regarding irrational belief processes may preclude the possibility of testing the proposition that demandingness is the primary irrational or dysfunctional belief.     

Real Evidence for the Failure of the Jamesian Perspective or More Evidence in Support of It?

Hardy and Moriarty (2006) presented evidence in support of James's (1890) individual importance hypothesis using a new methodology. Marsh (in press) criticized the Hardy and Moriarty approach, claiming that it did not constitute a valid test of the hypothesis and that in his article he had produced more evidence against it. In this article, we refute both these claims and argue instead that Marsh's individually weighted-averages method does not constitute a valid test of the hypothesis. We also assert that his new analyses actually offer further evidence in support of the Jamesian perspective. Finally, we direct attention toward questionable assumptions that appear to underpin Marsh's approach, and we try to point a way forward for future research in this area.     

Dynamic mechanisms of exercise to improve body satisfaction: Perceived or actual fat loss?

We examined the dynamic mechanisms of aerobic training (AT) and strength training (ST) to improve body satisfaction. Sixty-six participants were randomised to either the AT or ST condition and completed an 8-week intervention. Participants completed 3 weekly, 30-minute sessions of moderate intensity AT (65–75% VO₂max) or ST (65–75% 1-RM). The energy consumption of each session was approximately equivalent under both conditions. Body satisfaction, body composition, perceived fitness and exercise self-efficacy were measured at baseline and biweekly during the intervention. Exercise improved individuals' body satisfaction (p < .05). When the energy expenditures of AT and ST were equal, there was no difference in body satisfaction improvement. There were dynamic mechanisms underlying the effects of exercise on body satisfaction. Specifically, perceived fitness influenced body satisfaction improvements during the early stages of the exercise program, while changes in body composition influenced body satisfaction toward the end of the exercise program. There were sex differences in the mechanisms underlying body satisfaction. For women, perceived fat was more important in the early intervention period; for men, actual body fat was more valuable in the late intervention period. An effective strategy to improve body satisfaction is to initially target perceived fitness before focusing on changing body composition.     

Structure of the Dospert: Is There Evidence for a General Risk Factor?

The Domain‐specific Risk‐taking scale was designed to assess risk taking in specific domains. This approach is unconventional in personality assessment but reflects conventional wisdom in the decision community that cross‐situational consistency in risk taking is more myth than reality. We applied bifactor analysis to a large sample (n = 921) of responses to the Domain‐specific Risk Taking. Results showed that, in addition to domain‐specific facets, there does appear to be evidence for a general risk‐taking disposition. And this general appetite for risk appears to be useful for predicting real‐world outcomes. Copyright © 2016 John Wiley & Sons, Ltd.     

Comparing the Actual and Expected Persuasiveness of Evidence Types: How Good are Lay People at Selecting Persuasive Evidence?

Whereas there are many publications in which argumentation quality has been defined by argumentation theorists, considerably less research attention has been paid to lay people’s considerations regarding argument quality. Considerations about strong and weak argumentation are relevant because they can be compared with actual persuasive success. Argumentation theorists’ conceptions have to some extent been shown to be compatible with actual effectiveness, but for lay people such compatibility has yet to be determined. This study experimentally investigated lay people’s expectations about the persuasiveness of anecdotal, statistical, causal, and expert evidence, and compared these expectations with the actual persuasiveness of these evidence types. Dutch and French participants (N = 174) ranked four types of evidence in terms of their expected persuasiveness for eight different claims. Both cultural groups expected statistical evidence to be the most persuasive type of evidence to other people, followed by expert, causal, and, finally, anecdotal evidence. A comparison of these rankings with the results of Hornikx and Hoeken (Communication Monographs 74, 443–463, 2007, Study 1) on the actual persuasiveness of the same evidence types reveals that people’s expectations are generally accurate: How relatively persuasive they expect evidence types to be often corresponded with their actual persuasiveness.

Is Evidence Non-Inferential?

Evidence is often taken to be foundational, in that while other propositions may be inferred from our evidence, evidence propositions are themselves not inferred from anything. I argue that this conception is false, since the non-inferential propositions on which beliefs are ultimately founded may be forgotten or undermined in the course of enquiry.     

What Determines Emotional Well-Being? The Role of Adverse Experiences: Evidence Using Twin Data

In this paper we use twin data from Australia to explore emotional well-being and its determinants. We aim to accomplish three things. First of all, using twin-fixed effects, and purging the estimates of common family environment and genetic similarities, we can test the robustness of previous findings in the well-being literature. We find that in the monozygotic twin-fixed effects estimations the marital status, health, years of education, and having low income preserve their significance, thus confirming the most pronounced stylized facts in the happiness literature. Second, using information about traumatic events, we test the validity of the adaptation hypothesis, according to which human beings can adapt to both positive and negative shocks and return to some setpoint level of life satisfaction. We find a strong negative effect of more recent traumatic events, such as being assaulted, being raped or being involved in an accident, which effects dissipate over time; thus, we confirm the validity of the adaptation hypothesis. Last but not least, we show that genetic dispositions are important for the within-pair variance of the emotional well-being.     

Characterization of fine motor development: Dynamic analysis of children’s drawing movements

In this study, we investigated children’s fine motor development by analyzing drawing trajectories, kinematics and kinetics. Straight lines drawing task and circles drawing task were performed by using a force sensitive tablet. Forty right-handed and Chinese mother-tongue students aged 6–12, attending classes from grade 1 to 5, were engaged in the experiment. Three spatial parameters, namely cumulative trace length, vector length of straight line and vertical diameter of circle were determined. Drawing duration, mean drawing velocity, and number of peaks in stroke velocity profile (NPV) were derived as kinematic parameters. Besides mean normal force, two kinetic indices were proposed: normalized force angle regulation (NFR) and variation of fine motor control (VFC) for circles drawing task. The maturation and automation of fine motor ability were reflected by increased drawing velocity, reduced drawing duration, NPV and NFR, with decreased VFC in circles drawing task. Grade and task main effects as well as significant correlations between age and parameters suggest that factors such as schooling, age and task should be considered in the assessment of fine motor skills. Compared with kinematic parameters, findings of NFR and VFC revealed that kinetics is another important perspective in the analysis of fine motor movement.     

Development of comprehension of “or”: Evidence for a sequence of competencies

Comprehension of various usages of “or” was investigated in children 5–6, 7–8, and 9–10 years old, and in college students. One task used imperatives containing “or.” and investigated the set union interpretation. In a second task, one puppet asserted a statement and another puppet contradicted it: subjects were asked whether both could be right, and whether one had to be right. A third task investigated the truth conditions for disjunctions. The fourth task presented reasoning problems that tested principles of inference involving “or.” It was found that all age groups, even the youngest, could make the logical inferences involving “or.” All age groups could also perceive contradictions, but subjects were less than unanimous that one of the puppets contradicting each other had to be right. Sensible truth judgments for disjunctions began to develop around 7–8 years. Set union was elicited in only a few adults. In general, except when it indicates set union, “or” is understood substantially earlier than the current literature suggests. Logical inference is one of the first uses in which children become competent, suggesting that the basic meaning of “or” is given by inference forms for reasoning with alternatives, not by truth conditions.     

Vocational Guidance for Trainee Teachers?: Some Caribbean Evidence

Guidance in further and higher education is comparatively neglected in many countries. This is particularly true of vocational guidance for trainee teachers. It is suggested that one can no longer assume that such trainees are already committed to a career in teaching. Evidence is offered from Jamaica and Antigua to show that about half the trainee teachers in those territories neither wanted nor look forward to a career in teaching. It is argued that their occupational preferences indicate a need for vocational guidance even as they are being trained for teaching. Finally, it is suggested that this policy is not as paradoxical as it may sound.