Children's intention-cue detection as a function of maternal social behavior: Pathways to social rejection.

This study examined the role of maternal social behavior in children's behavioral reactions to provocation. Popular and rejected 1st graders and their mothers independently completed an intention-cue detection task. Mothers also completed a questionnaire assessing if their responses to their child were based on the child's intent. A moderate relation within the mother–child dyad was noted for all measures. Rejected children and their mothers reported more aggressive behavioral responses to nonhostile and ambiguous provocations than did popular children and their mothers. Mothers of popular children provided more prosocial resolutions to provocation than did mothers of rejected children. In addition, mothers of popular children focused more on the intent of their children's actions than did mothers of rejected children, particularly when behavior led to negative outcomes. Implications of these findings in terms of the correlates of social status are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The dependence of natural graphite anode performance on electrode density

The effect of electrode density for lithium intercalation and irreversible capacity loss on the natural graphite anode in lithium ion batteries was studied by electrochemical methods. Both the first-cycle reversible and irreversible capacities of the natural graphite anode decreased with an increase in the anode density though compression. The reduction in reversible capacity was attributed to a reduction in the chemical diffusion coefficient for lithium through partially agglomerated particles with a larger stress. For the natural graphite in this study the potentials for Li (de)insertion shifted between the first and second formation cycles and the extent of this shift was dependent on electrode density. The relation between this peak shift and the irreversible capacity loss is probably due to the decrease in graphite surface area with compression.     

From conceptual roles to structural relations: Bridging the syntactic cleft.

The distinction between underlying and superficial linguistic structure is a staple of modern cognitive psychology. Despite increasingly diverse conceptions of syntactic relations in linguistic theory, the received view in psycholinguistics has remained one in which the entities assigned to underlying relations may assume different surface relations. This view is examined in the context of language production and evidence is reviewed that the disposition to bind animate entities to the surface subject relation is a basic feature of language use, suggesting that mappings from conceptual categories to syntactic relations form a main support of the bridge from conception to language. Proceeding on this assumption, an evaluation of competing accounts of the mapping process in production is given. Results argue against syntactic relation-changing operations, but favor a division between meaning- and form-related mechanisms. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Newcasters' facial expressions and voting behavior of viewers: Can a smile elect a president?

Two studies examined the association between newscasters' facial expressions and the voting behavior of viewers. In Exp I, with 45 undergraduates, the facial expressions exhibited by network newscasters while referring to the 1984 presidential candidates prior to the election were investigated. Results indicate that 1 of the 3 newscasters exhibited significantly more positive facial expressions when referring to Reagan than when referring to Mondale. In Exp II, a telephone survey of approximately 200 individuals was conducted to determine whether voting behavior was associated with the nightly news program watched. It was found that voters who regularly watched the newscaster who exhibited the biased facial expressions were significantly more likely to vote for the candidate that the newscaster had smiled upon. Three explanations for the results are discussed: (1) Viewing the newscasters' biased facial expressions caused the viewers' voting preferences; (2) the viewers' voting preferences determined their viewing of biased newscasters' facial expressions; or (3) some other variable accounted for the findings. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Research participants telling the truth about their lives: The ethics of asking and not asking about abuse.

Most discussions of the ethics of self-report research on abuse and interpersonal violence focus on the risks of asking participants about their experiences. An important element of the cost-benefit analysis--the costs of not asking about child abuse--has largely been ignored. Furthermore, little research has been conducted on the costs and benefits of child abuse research, leaving researchers to make decisions based on individual beliefs about such issues as the prevalence of abuse, the likelihood of disclosure, the effects of child abuse, and the ability of abuse survivors to give informed consent. The authors suggest that these beliefs tend to overemphasize survivors' vulnerability and ignore the costs of avoiding asking about abuse. In fact, these beliefs may reinforce societal avoidance of abuse and ultimately harm abuse survivors. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Simulations and Institutional Change: Training US Government Professionals for Improved Management of Complex Emergencies Abroad

A new training programme for US Government officials features simulations that require them to reach across normal bureaucratic boundaries to rehearse actual responses to real-life overseas emergencies. The simulations use a planning template that builds on lessons learned from recent, non-traditional, civil-military and humanitarian operations. The programme aims to help officials from many different parts of the government improve their capacity to coordinate inter-agency responses by institutionalizing advance planning among those most likely to be involved in any US action. A discussion-capture software package developed at the War Gaming and Simulation Centre that incorporates the planning template facilitates this process and supports the training goals.     

Confrontation naming in Alzheimer's patients: Relation to disease severity.

Reports of Alzheimer's disease patients in whom naming performance is disproportionate to other cognitive performances raise questions about the stage model, or dementia-severity level, for predicting naming performance. Thus, dementia severity as defined by Global Deterioration Scale ratings, Mini-Mental State Examination scores, and combinations of them was evaluated as a predictor of naming performance in 102 Alzheimer's patients and was found to account for approximately ? of performance variability. Additional contributions from age at onset, duration, family history, and gender were negligible. Therefore, naming ability can be argued to have a subcomponent that is not subsumed by overall cognitive ability. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

GPU-based real-time small displacement estimation with ultrasound

General purpose computing on graphics processing units (GPUs) has been previously shown to speed up computationally intensive data processing and image reconstruction algorithms for computed tomography (CT), magnetic resonance (MR), and ultrasound images. Although some algorithms in ultrasound have been converted to GPU processing, many investigative ultrasound research systems still use serial processing on a single CPU. One such ultrasound modality is acoustic radiation force impulse (ARFI) imaging, which investigates the mechanical properties of soft tissue. Traditionally, the raw data are processed offline to estimate the displacement of the tissue after the application of radiation force. It is highly advantageous to process the data in real-time to assess their quality and make modifications during a study. In this paper, we present algorithms for efficient GPU parallel processing of two widely used tools in ultrasound: cubic spline interpolation and Loupas' two-dimensional autocorrelator for displacement estimation. It is shown that a commercially available graphics card can be used for these computations, achieving speed increases up to 40x compared with single CPU processing. Thus, we conclude that the GPU-based data processing approach facilitates real-time (i.e., <1 second) display of ARFI data and is a promising approach for ultrasonic research systems.