Young children associate novel words with complex objects rather than salient parts

How do children learn associations between novel words and complex perceptual displays? Using a visual preference procedure, the authors tested 12- and 19-month-olds to see whether the infants would associate a novel word with a complex 2-part object or with either of that object's parts, both of which were potentially objects in their own right and 1 of which was highly salient to infants. At both ages, children's visual fixation times during test were greater to the entire complex object than to the salient part (Experiment 1) or to the less salient part (Experiment 2)--when the original label was requested. Looking times to the objects were equal if a new label was requested or if neutral audio was used during training (Experiment 3). Thus, from 12 months of age, infants associate words with whole objects, even those that could potentially be construed as 2 separate objects and even if 1 of the parts is salient.     

Physician Beliefs about Physical and Mental Competency of Patients Applying for Concealed Weapon Permits

Law enforcement officials have asked health care providers to evaluate patient applications for concealed weapon permits. The current study was designed to examine physician beliefs regarding competency to carry a concealed weapon for patients with specific physical and mental conditions. Among 222 North Carolina physicians who participated in this survey (40% response rate), large variation and uncertainty existed for determining competency. Physicians most frequently chose mild dementia, post-traumatic stress disorder, and recent depression as conditions that would render a patient not competent to carry a concealed weapon. Male physicians and those owning a gun were more likely to deem a patient competent. Almost a third of physicians were unsure about competence for most conditions. Physicians asked to assess competency of patients to carry a concealed weapon have quite disparate views on competency and little confidence in their decisions. If physicians are expected to assess patient competence to carry a concealed weapon, more objective criteria and training are needed. Copyright © 2015 John Wiley & Sons, Ltd.     

Measuring the combined risk to young children's cognitive development: An alternative to cumulative indices

In studies of child development, the combined effect of multiple risks acting in unison has been represented in a variety of ways. This investigation builds upon this preceding work and presents a new procedure for capturing the combined effect of multiple risks. A representative sample of 2,899 British children had their cognitive development measured at 36 and 58 months of age along with 10 potential risks during this period of development. Comparing a cumulative index of these risks against the previously undocumented alternative of confirmatory factor analysis using formative measurement, this study found differences favouring the factor analysis. The factor analysis procedure demonstrated greater predictive power of children's cognitive development while it systematically tested two of the assumptions implicit in cumulative risk indices.     

Whole Lives and Good Deaths

This article discusses two views associated with narrative conceptions of the self. The first view asserts that our whole life is reasonably regarded as a single unit of meaning. A prominent strand of the philosophical narrative account of the self is the representative of this view. The second view—which has currency beyond the confines of the philosophical narrative account—is that the meaning of a life story is dependent on what happens at the end of it. The article argues that the connection between these two views is more tentative than often supposed: philosophical narrativists that see life as a single unit of value and meaning nonetheless provide grounds for arguing that the end of life is not the best and may be a particularly bad time to approach and intervene in the matter of how well one's life as a whole has gone.     

Cognitive control deployment is flexibly modulated by social value in early adolescence

Recent mechanistic models of cognitive control define the normative level of control deployment as a function of the effort cost of exerting control balanced against the reward that can be attained by exerting control. Despite these models explaining empirical findings in adults, prior literature has suggested that adolescents may not adaptively integrate value into estimates of how much cognitive control they should deploy. Moreover, much work in adolescent neurodevelopment casts social valuation processes as competing with, and in many cases overwhelming, cognitive control in adolescence. Here, we test whether social incentives can adaptively increase cognitive control. Adolescents (M_age = 14.64, 44 male, N = 87) completed an incentivized cognitive control task in which they could exert cognitive control to receive rewards on behalf of real peers who were rated by all peers in their school grade as being of either high- or low-status. Using Bayesian modeling, we find robust evidence that adolescents exert more cognitive control for high- relative to low-status peers. Moreover, we demonstrate that social incentives, irrespective of their high- or low-status, boost adolescent cognitive control above baseline control where no incentives are offered. Findings support the hypothesis that the cognitive control system in early adolescence is flexibly modulated by social value.     

Performance gains from directed training do not transfer to untrained tasks

Given the increasing complexity of the tasks and skills needed in modern society, developing effective training strategies is of tremendous practical importance. Furthermore, training that improves performance of both trained and untrained tasks would be highly efficient. In the present study, we examined how directed training contributes to skill acquisition, and more importantly, to engendering transfer of training to untrained tasks. Participants learned a complex video game for 30 h (Space Fortress, Donchin, Fabiani, & Sanders, 1989) using one of two training regimens: Hybrid Variable-Priority Training (HVT), with a focus on improving specific skills and managing task priority, or Full Emphasis Training (FET) in which participants simply practiced the game to obtain the highest overall score. We compared game performance, retention of training gains, and transfer of training to untrained tasks as a function of the training regimen. Compared to FET, HVT learners reached higher levels of mastery on the game and HVT was particularly beneficial for initially poor performing participants. This benefit persisted seven months after training. However, contrary to expectation, both HVT and FET were unsuccessful in producing transfer to untrained tasks compared to a group that received limited game experience, suggesting that directed training and practice can produce task-specific improvements, but improvements do not necessarily transfer from trained to untrained tasks.     

Forced confabulation affects memory sensitivity as well as response bias

A signal detection analysis assessed the extent to which forced confabulation results from a change in memory sensitivity (d _a ), as well as response criterion (β). After viewing a crime video, participants answered 14 answerable and 6 unanswerable questions. Those in the voluntary guess condition had a “don’t know” response option; those in the forced guess condition did not. One week later, the same questions were answered using a recognition memory test that included each participant’s initial responses. As was predicted, on both answerable and unanswerable questions, participants in the forced guess condition had significantly lower response criteria than did those who voluntarily guessed. Furthermore, on both answerable and unanswerable questions, d _a scores were also significantly lower in the forced than in the voluntary guess condition. Thus, the forced confabulation effect is a real memory effect above and beyond the effects of response bias; forcing eyewitnesses to guess or speculate can actually change their memory.     

The Significance of Strategic Community Engagement in Recruiting African American Youth & Families for Clinical Research

We present baseline data and describe the utility of a community engaged, culturally relevant approach to recruiting African American youth and families for phase I of The AAKOMA Project. The AAKOMA Project is a two phase treatment development study to improve mental health service use among depressed African American youth. We completed capacity building activities using a community engaged framework and Community Based Participatory Research (CBPR) methods. Replicating the (Alvarez et al. in West J Nurs Res 28:541–560, 2006) model of systematic community outreach enhanced our ability to effectively recruit partners and evaluate outreach efforts as demonstrated by our Recruitment Success Factor (RSF—i.e. ‘an adjusted ratio of eligible participant yield to contacts made’). Using the chi-square goodness-of-fit statistic; we compared the RSFs of the various modes of participant study entry to determine which was most effective. Our target enrollment was 56 persons. We recruited 130 and enrolled 57. Our baseline data is drawn from a gender balanced and socioeconomically diverse sample who participated in youth focus groups and individual interviews and adult focus groups. We identified 3 study participant referral modes (self-referral, provider referral and participant-to-participant referral) with multiple sources per mode and an overall RSF of 0.41. Study findings support the effectiveness of assiduous and systematic community interaction, reflective review of recruitment efforts and the importance of disseminating information on strategic recruitment processes for engaging diverse populations in clinical research.     

Neuropsychological profile following suicide attempt by hanging: two adolescent case reports

Hippocampal damage and amnesia following hypoxia and ischemia are described in the few published adult cases of suicide attempt by hanging. However, a recent review (Caine &; Watson, 2000 Caine, D. and Watson, J. D. 2000. Neuropsychological and neuropathological sequelae of cerebral anoxia: A critical review. Journal of the International Neuropsychology Society, 6: 86–99. [CROSSREF][Crossref], [PubMed], [Web of Science ®] , [Google Scholar]) suggests a variable pattern of brain involvement and neuropsychological impairments following hypoxic-ischemic injury that may or may not involve amnesia. To help clarify the impact of hanging on the developing brain, we examined neuropsychological functioning in two adolescents who survived suicide attempt by hanging. Despite differences in Glasgow Coma Scale (GCS), coma duration, and structural imaging findings, both patients had similar IQ (VIQ > PIQ) and presented with various combinations of deficits in expressive/receptive language, visual-constructional and perceptual ability, processing speed, attention, working memory, and/or executive functioning shortly after injury. In spite of their similarities, only one of the patients presented with classic amnesia symptoms in his early recovery. This patient was evaluated 1 year postinjury, and persistent deficits in processing speed and memory encoding were noted. Several hanging-related variables, including longer estimated hanging duration, greater weight, and severe airway edema, were thought to place this patient at increased risk for cognitive deficits. Clinical MRI scans of this patient obtained 6 weeks postinjury revealed mild volume loss as well as abnormalities in bilateral superior cortex. However, CT and MRI scans obtained throughout early recovery did not reveal overt evidence of injury to specific memory-related structures. Comprehensive neuropsychological evaluation of all adolescent survivors of suicide attempt by hanging is recommended, as a variety of postacute cognitive deficits were observed in these patients despite relatively short (≤ 15 minutes) estimated hanging durations.