Preschool children’s interpretation of object‐initial sentences: Neural correlates of their behavioral performance

The acquisition of the function of case‐marking is a key step in the development of sentence processing for German‐speaking children since case‐marking reveals the relations between sentential arguments. In this study, we investigated the development of the processing of case‐marking and argument structures in children at 3, 4;6 and 6 years of age, as well as its processing in adults. Using EEG, we measured event‐related potentials (ERPs) in response to object‐initial compared to subject‐initial German sentences including transitive verbs and case‐marked noun phrases referring to animate arguments. We also tested children’s behavioral competence in a sentence‐picture matching task. Word order and case‐marking were manipulated in German main clauses. Adults’ behavioral performance was close to perfect and their ERPs revealed a negativity for the processing of the topicalized accusative marked noun phrase (NP1) and no effect for the second NP (NP2) in the object‐initial structure. Children’s behavioral data showed a significant above‐chance outcome in the subject‐initial condition for all age groups, but not for the object‐initial condition. In contrast to adults, the ERPs of 3‐year‐olds showed a positivity at NP1, indicating difficulties in processing the non‐canonical object‐initial structures. Children at the age of 4;6 did not differ in the processing patterns of object‐initial vs. subject‐initial sentences at NP1 but showed a slight positivity at NP2. This positivity at NP2, which implies syntactic integration difficulties, is more pronounced in 6‐year‐olds but is absent in adults. At NP1, however, 6‐year‐olds show the same negativity as adults. In sum, the behavioral and electrophysiological findings demonstrate that children in each age group use different strategies, which are indicative of their developmental stage. While 3‐year‐olds merely detect differences in the two sentence structures without being able to use this information for sentence comprehension, 4;6‐year‐olds proceed to use mainly a word‐order strategy, processing NP1 in both conditions in the same manner, which leads to processing difficulties upon detecting case‐marking cues at NP2. At the age of 6, children are able to use case‐marking cues for comprehension but still show enhanced effort for correct thematic‐role assignment.     

How does cognition evolve? Phylogenetic comparative psychology

Now more than ever animal studies have the potential to test hypotheses regarding how cognition evolves. Comparative psychologists have developed new techniques to probe the cognitive mechanisms underlying animal behavior, and they have become increasingly skillful at adapting methodologies to test multiple species. Meanwhile, evolutionary biologists have generated quantitative approaches to investigate the phylogenetic distribution and function of phenotypic traits, including cognition. In particular, phylogenetic methods can quantitatively (1) test whether specific cognitive abilities are correlated with life history (e.g., lifespan), morphology (e.g., brain size), or socio-ecological variables (e.g., social system), (2) measure how strongly phylogenetic relatedness predicts the distribution of cognitive skills across species, and (3) estimate the ancestral state of a given cognitive trait using measures of cognitive performance from extant species. Phylogenetic methods can also be used to guide the selection of species comparisons that offer the strongest tests of a priori predictions of cognitive evolutionary hypotheses (i.e., phylogenetic targeting). Here, we explain how an integration of comparative psychology and evolutionary biology will answer a host of questions regarding the phylogenetic distribution and history of cognitive traits, as well as the evolutionary processes that drove their evolution.     

SOS! An algorithm and software for the stochastic optimization of stimuli

The characteristics of the stimuli used in an experiment critically determine the theoretical questions the experiment can address. Yet there is relatively little methodological support for selecting optimal sets of items, and most researchers still carry out this process by hand. In this research, we present SOS, an algorithm and software package for the stochastic optimization of stimuli. SOS takes its inspiration from a simple manual stimulus selection heuristic that has been formalized and refined as a stochastic relaxation search. The algorithm rapidly and reliably selects a subset of possible stimuli that optimally satisfy the constraints imposed by an experimenter. This allows the experimenter to focus on selecting an optimization problem that suits his or her theoretical question and to avoid the tedious task of manually selecting stimuli. We detail how this optimization algorithm, combined with a vocabulary of constraints that define optimal sets, allows for the quick and rigorous assessment and maximization of the internal and external validity of experimental items. In doing so, the algorithm facilitates research using factorial, multiple/mixed-effects regression, and other experimental designs. We demonstrate the use of SOS with a case study and discuss other research situations that could benefit from this tool. Support for the generality of the algorithm is demonstrated through Monte Carlo simulations on a range of optimization problems faced by psychologists. The software implementation of SOS and a user manual are provided free of charge for academic purposes as precompiled binaries and MATLAB source files at http://sos.cnbc.cmu.edu.     

Framing the Discussion: Nanotechnology and the Social Construction of Technology--What STS Scholars Are Saying

The emergence of nanotechnology, with all its promises of economic, social, and medical benefits, along with dire predictions of environmental, health, and safety threats, has occasioned an active debate in the Science and Technology Studies field, in which we have seen five distinct conversations that frame the discussion. The topical threads include ethics, regulation, opportunities and threats including utopian/dystopian visions of the future, public perception, public participation. These conversational distinctions are not absolutes with firm borders as they clearly overlap at many points. Nonetheless, common to all is a strong sense that control and consequence are significant problems that have yet to be addressed adequately by the promoters of nanotechnology. A final section addresses articles on nanotechnology that exemplify the social construction theory of technology. We include herein a selective summary of this recent body of science, technology, and society (STS) journal literature focused on the social and ethical interactions of nanotechnology (SEIN) that has emerged in the last few years. The intent is not to be encyclopedic in coverage, but rather to seek to understand, in a general way, the key issues and concepts STS scholars are discussing. It is clear that STS-oriented scholars are well poised to grapple explicitly with the cultural, socio-political, and ethical dimensions of nanotechnology. Drawing on understandings of earlier socio-technical areas of interest and concern??nuclear power, genetically modified organisms, the human genome??such scholars have moved well beyond the questions of whether and where nanotechnology intersects society. More important is their effort to seek an understanding in depth of exactly how they are socio-politically, culturally, and ethically interconnected. In doing so, SEIN studies have at the same time become increasingly diverse and more sophisticated and mature over the course of the past decade. Scholars have quite rightly recognized the inadequacies of blanket ideas of moratoria versus non-regulatory environments, utopian versus dystopian futures, and whether or not the public has a role to play in nanotechnology decision making. Rather, a more sophisticated, often case specific, flexible understanding of the societal context of a given issue or concern is called for.     

Impairment in material-specific long-term memory following unilateral mediodorsal thalamic damage and presumed partial disconnection of the mammillo-thalamic tract

Neuropsychological findings suggest material-specific lateralization of the medial temporal lobe's role in long-term memory, with greater left-sided involvement in verbal memory, and greater right-sided involvement in visual memory. Whether material-specific lateralization of long-term memory also extends to the anteromedial thalamus remains uncertain. We report two patients with unilateral right (OG) and left (SM) mediodorsal thalamic pathology plus probable correspondingly lateralized damage of the mammillo-thalamic tract. The lesions were mapped using high-resolution structural magnetic resonance imaging and schematically reconstructed. Mean absolute volume estimates for the mammillary bodies, hippocampus, perirhinal cortex, and ventricles are also presented. Estimates of visual and verbal recall and item recognition memory were obtained using the Doors and People, the Rey Complex Figure Test, and the Logical Memory subtests of the Wechsler Memory Scales. Each patient's performance was compared to a group of healthy volunteers matched for demographic characteristics, premorbid IQ, and current levels of functioning. A striking double dissociation was evident in material-specific long-term memory, with OG showing significant impairments in visual memory but not verbal memory, and SM showing the opposite profile of preserved visual memory and significantly impaired verbal memory. These impairments affected both recall and item recognition. The reported double dissociation provides the strongest evidence yet that material-specific lateralization of long-term memory also extends to the anteromedial thalamus. The findings are also discussed in relation to proposals that distinct anatomical regions within the medial temporal lobe, anteromedial thalamus, and associated tracts make qualitatively different contributions to recall and item recognition.     

The Counseling Profession in Russia: Historical Roots,Current Trends,and Future Perspectives

Psychology was established in Russia before the Communist era. The social work profession was created in 1991 for a society in turmoil after the collapse of the Soviet Union. In 2011, the counseling profession officially emerged as a branch of social work called social psychological help. Professional counseling associations are in the formative stage. Concern about mental health issues, particularly substance abuse, suggests that the counseling profession could continue to grow in Russia.     

How Word Familiarity Facilitates Visual Search for Verbal Material

Two experiments assessed the impact of word familiarity on visual search for phrases. Participants' eye movements were recorded while they memorized target phrases and then searched for them within more or less similar phrases. The phrases were written with either familiar or unfamiliar, neuroscience‐specific vocabulary. Most participants did not search for the target by reading lines in a systematic way but scanned the first words of phrases to identify those beginning with the same words as the target. Visual search for unfamiliar target phrases was associated with an increase in the number of non‐target phrases that were scanned. The only search phase during which fixation durations depended on word familiarity was the final recognition of the target phrase. Hence, the data support a model of search within menu‐like displays in which searchers primarily rely on fast, visual match mechanisms and engage in reading‐like processing only during the critical decision‐making phase. Copyright © 2011 John Wiley & Sons, Ltd.     

National Ambulatory Medical Care Survey: Tobacco intervention practices in outpatient clinics

Tobacco use remains the leading cause of preventable death. The outpatient medical clinic represents an important venue for delivering evidence-based interventions to large numbers of tobacco users. Extensive evidence supports the effectiveness of brief interventions. In a retrospective database analysis of 11,827 adult patients captured in the 2005 National Ambulatory Medical Care Survey (of which 2,420 were tobacco users), we examined the degree to which a variety of patient demographic, clinical and physician-related variables predict the delivery of tobacco counseling during a routine outpatient visit in primary care settings. In 2005, 21.7% of identified tobacco users received a tobacco intervention during their visit. The probability of receiving an intervention differed by gender, geographic region and source of payment. Individuals presenting with tobacco-related health conditions were more likely to receive an intervention. Most physicians classified as specialists were less likely to intervene. The provision of tobacco intervention services appears to be increasing at a modest rate, but remains well below desirable levels. It is a priority that brief interventions be routinely implemented to reduce the societal burden of tobacco use. (PsycINFO Database Record (c) 2012 APA, all rights reserved).