Animal,but not human,faces engage the distributed face network in adolescents with autism

Multiple hypotheses have been offered to explain the impaired face‐processing behavior and the accompanying underlying disruptions in neural circuitry among individuals with autism. We explored the specificity of atypical face‐processing activation and potential alterations to fusiform gyrus (FG) morphology as potential underlying mechanisms. Adolescents with high functioning autism (HFA) and age‐matched typically developing (TD) adolescents were scanned with sMRI and fMRI as they observed human and animal faces. In spite of exhibiting comparable face recognition behavior, the HFA adolescents evinced hypo‐activation throughout the face‐processing system in response to unfamiliar human, but not animal, faces. They also exhibited greater activation in affective regions of the face‐processing network in response to animal, but not human, faces. Importantly, this atypical pattern of activation in response to human faces was not related to atypical structural properties of the FG. This atypical neural response to human faces in autism may stem from abnormalities in the ability to represent the reward value of social (i.e. conspecific) stimuli.     

Connecting Return Intentions and Home Investment: the Case of Ghanaian Migrants in Southern Europe

In this paper, we analyse the return intentions and home investment of Ghanaian migrants living in Italy and Spain. We show that the migrants’ intention to resettle in Ghana is a strong motivation for them to invest there. Home construction is the primary investment activity that those who desire to return undertake, followed by setting up an income generating venture (retail shop, bakery, hairdressing salon, cash crop and poultry farms). However, in spite of high return intentions, actual return is largely dependent on economic success than failure. Moreover, the migrants’ desire to educate their children in the West, keep their European residence rights, and difficult socio-economic conditions in Ghana constitute key constraints to return. Consequently, the migrants prefer to establish a permanent home in Europe, with the hope to return home when their children grow up or after their labour market activity is over; and while those in Italy desire to move onward, those in Spain prefer to stay there.     

Digital LED Pixels: Instructions for use and a characterization of their properties

This article details how to control light emitting diodes (LEDs) using an ordinary desktop computer. By combining digitally addressable LEDs with an off-the-shelf microcontroller (Arduino), multiple LEDs can be controlled independently and with a high degree of temporal, chromatic, and luminance precision. The proposed solution is safe (can be powered by a 5-V battery), tested (has been used in published research), inexpensive (～ $60 + $2 per LED), highly interoperable (can be controlled by any type of computer/operating system via a USB or Bluetooth connection), requires no prior knowledge of electrical engineering (components simply require plugging together), and uses widely available components for which established help forums already exist. Matlab code is provided, including a ‘minimal working example’ of use suitable for use by beginners. Properties of the recommended LEDs are also characterized, including their response time, luminance profile, and color gamut. Based on these, it is shown that the LEDs are highly stable in terms of both luminance and chromaticity, and do not suffer from issues of warm-up, chromatic shift, and slow response times associated with traditional CRT and LCD monitor technology.     

Recall,recognition, and confidence patterns in eyewitness testimony

The diversity of methods, contents and tests used in the study of eyewitness memory may have contributed to discrepancies in results in this field. In this experiment, using incidental or intentional learning, we examine the recall and recognition of actions and details concerning the central and peripheral information of a kidnapping. A similar pattern emerges in free recall, hits and recognition confidence: scores are much higher in actions than in central details and there are almost no differences between peripheral actions and details, showing that the distribution of attentional resources is different for actions and details in central than in peripheral information. Although in recall the degree of error was low, in recognition false alarms, especially those in central actions, reduced the level of accuracy to even lower than chance performance in both incidental and intentional groups, also showing that subjects accept false but plausible contents with a high level of confidence. Copyright © 1999 John Wiley & Sons, Ltd.     

Toward a Reasons-First View of Normative Background Conditions

Philosophia - Background conditions are thought to explain how objects can have value in virtue of certain features and how reasons can consist in certain facts. The following paper provides an...     

The paraventricular nucleus of the hypothalamus is involved in cardiovascular responses to acute restraint stress in rats

The paraventricular nucleus of the hypothalamus (PVN) has been implicated in several aspects of cardiovascular control. Stimulation of the PVN evokes changes in blood pressure and heart rate. Additionally, this brain area is connected to several limbic structures implicated in behavioral control, as well as to forebrain and brainstem structures involved in cardiovascular control. This evidence indicates that the PVN may modulate cardiovascular correlates of behavioral responses to stressful stimuli. Acute restraint is an unavoidable stressor that evokes marked and sustained cardiovascular changes, which are characterized by elevated mean arterial pressure (MAP) and an intense heart rate (HR) increase. We report on the effect of inhibition of PVN synapses on MAP and HR responses evoked by acute restraint in rats. Bilateral microinjection of the nonspecific synaptic blocker cobalt (CoCl(2), 1 mM/100 nl) into the PVN did not change the HR response or the initial peak of the MAP response to restraint stress, but reduced the area under the curve of the MAP response. Moreover, bilateral microinjection of cobalt in areas surrounding the PVN did not change the cardiovascular response to restraint. These results indicate that synapses in the PVN are involved in the neural pathway that controls blood pressure changes evoked by restraint.     

The N-Effect: More Competitors, Less Competition

ABSTRACT— This article introduces the N-effect —the discovery that increasing the number of competitors ( N ) can decrease competitive motivation. Studies 1a and 1b found evidence that average test scores (e.g., SAT scores) fall as the average number of test takers at test-taking venues increases. Study 2 found that individuals trying to finish an easy quiz among the top 20% in terms of speed finished significantly faster if they believed they were competing in a pool of 10 rather than 100 other people. Study 3 showed that the N-effect is strong among individuals high in social-comparison orientation and weak among those low in social-comparison orientation. Study 4 directly linked the N-effect to social comparison, ruling out ratio bias as an explanation of our results and finding that social comparison becomes less important as N increases. Finally, Study 5 found that the N-effect is mediated by social comparison. Limitations, future directions, and implications are discussed.     

CREATING SINGLE‐SUBJECT DESIGN GRAPHS IN MICROSOFT EXCEL™ 2007

Over 10 years have passed since the publication of Carr and Burkholder's (1998) technical article on how to construct single‐subject graphs using Microsoft Excel. Over the course of the past decade, the Excel program has undergone a series of revisions that make the Carr and Burkholder paper somewhat difficult to follow with newer versions. The present article provides task analyses for constructing various types of commonly used single‐subject design graphs in Microsoft Excel 2007. The task analyses were evaluated using a between‐subjects design that compared the graphing skills of 22 behavior‐analytic graduate students using Excel 2007 and either the Carr and Burkholder or newly developed task analyses. Results indicate that the new task analyses yielded more accurate and faster graph construction than the Carr and Burkholder instructions.     

Coping Options: Missing Links between Minority Group Identification and Psychological Well-Being

Using concepts from social identity theory ( Tajfel & Turner, 1979 ) and Lazarus and Folkman's (1984) cognitive theory of stress and coping we tested the capacity for group identification to foster beliefs in one's ability to cope successfully and in turn predict psychological well-being. Black American participants appraised the availability of coping options that varied by level of identity (individual, intragroup, and intergroup) as well as function of coping (problem-focused and emotion-focused). Replicating prior work, participants who were higher in racial group identification reported more positive well-being. Appraisals of individual emotion-focused and intergroup problem-focused options mediated the relationship of group identification with both self-esteem and life satisfaction. Appraisals of intergroup emotion-focused options also partially mediated the relationship between group identification and life satisfaction. Findings suggest that the relationship between minority group identification and well-being may partly be due to its influence over a person's sense that they and their group can respond effectively to disadvantage.     

Rankings,standards, and competition: Task vs. scale comparisons

Research showing how upward social comparison breeds competitive behavior has so far conflated local comparisons in task performance (e.g. a test score) with comparisons on a more general scale (i.e. an underlying skill). Using a ranking methodology ( Garcia, Tor, & Gonzalez, 2006) to separate task and scale comparisons, Studies 1–2 reveal that an upward comparison on the scale (e.g. being surpassed in rank), rather than in the mere task (e.g., being outperformed), is necessary to generate competition among rivals proximate to a standard (e.g. ranked #3 vs. 4, near “the top”); rivals far from a standard (e.g. ranked #203 vs. 204), on the other hand, still tend to cooperate. Study 3 illustrates this finding with player trades in Major League Baseball. Study 4 further shows how an implicit scale comparison, instead of the commonly assumed explicit task comparison, may account for those classical competition findings in the literature. Study 5 then reveals how scale ranking becomes all important in the proximity of a standard, leading rivals to tolerate even an upward scale comparison to increase their proximity to the standard. Implications for the increasingly popular “forced ranking” management systems (e.g., at General Electric) are also discussed.