The Impact of the Built Environment on Children’s School Conduct Grades: The Role of Diversity of Use in a Hispanic Neighborhood

A population-based study examined the relationship between diversity of use of the built environment and teacher reports of children’s grades. Diversity of use of the built environment (i.e., proportion of a block that is residential, institutional, commercial and vacant) was assessed for all 403 city blocks in East Little Havana, Miami—a Hispanic neighborhood. Cluster analysis identified three block-types, based on diversity of use: Residential, Mixed-Use, and Commercial. Cross-classified hierarchical linear modeling was used to examine the impact of diversity of use, school, gender, and year-in-school on academic and conduct grades for 2857 public school children who lived in these blocks. Contrary to popular belief, mixed-use blocks were associated with optimal outcomes. Specifically, follow-up analyses found that a youth living on a residential block had a 74% greater odds of being in the lowest 10% of conduct grades (conduct GPA <2.17) than a youth living on a mixed-use block. In fact, an analysis of the population attributable fraction suggests that if the risk associated with residential blocks could be reduced to the level of risk associated with mixed-use blocks, a 38% reduction in Conduct GPAs <2.17 could be achieved in the total population. These findings suggest that public policy targeting the built environment may be a mechanism for community-based interventions to enhance children’s classroom conduct, and potentially related sequelae.     

Prototype-distortion category learning: a two-phase learning process across a distributed network

This paper reviews a body of work conducted in our laboratory that applies functional magnetic resonance imaging (fMRI) to better understand the biological response and change that occurs during prototype-distortion learning. We review results from two experiments (Little, Klein, Shobat, McClure, & Thulborn, 2004; Little & Thulborn, 2005) that provide support for increasing neuronal efficiency by way of a two-stage model that includes an initial period of recruitment of tissue across a distributed network that is followed by a period of increasing specialization with decreasing volume across the same network. Across the two studies, participants learned to classify patterns of random-dot distortions (Posner & Keele, 1968) into categories. At four points across this learning process subjects underwent examination by fMRI using a category-matching task. A large-scale network, altered across the protocol, was identified to include the frontal eye fields, both inferior and superior parietal lobules, and visual cortex. As behavioral performance increased, the volume of activation within these regions first increased and later in the protocol decreased. Based on our review of this work we propose that: (i) category learning is reflected as specialization of the same network initially implicated to complete the novel task, and (ii) this network encompasses regions not previously reported to be affected by prototype-distortion learning.     

Research ethics for mental health science involving ethnic minority children and youths

In response to U.S. Public Health Service projects promoting attention to disparities in the outcomes of mental health treatments, in July 2001, the American Psychological Association, the National Institute of Mental Health, and the Fordham University Center for Ethics Education convened a group of national leaders in bioethics, multicultural research, and ethnic minority mental health to produce a living document to guide ethical decision making for mental health research involving ethnic minority children and youths. This report summarizes the key recommendations distilled from these discussions.     

Resilience to loss and chronic grief: a prospective study from preloss to 18-months postloss

The vast majority of bereavement research is conducted after a loss has occurred. Thus, knowledge of the divergent trajectories of grieving or their antecedent predictors is lacking. This study gathered prospective data on 205 individuals several years prior to the death of their spouse and at 6- and 18-months postloss. Five core bereavement patterns were identified: common grief, chronic grief, chronic depression, improvement during bereavement, and resilience. Common grief was relatively infrequent, and the resilient pattern most frequent. The authors tested key hypotheses in the literature pertaining to chronic grief and resilience by identifying the preloss predictors of each pattern. Chronic grief was associated with preloss dependency and resilience with preloss acceptance of death and belief in a just world.     

Predicting handwriting performance of early elementary students with the developmental test of visual-motor integration

The purpose of this study was to examine use of the Developmental Test of Visual-Motor Integration in predicting handwriting performance of early elementary students and the contribution of sex. An additional purpose was to examine whether successful completion of the first nine figures or the oblique cross from the test predicted handwriting. 101 children were tested at the beginning of their kindergarten year and again in the middle of the first-grade year on the Scale of Children's Readiness In PrinTing (SCRIPT). The VMI kindergarten scores did not significantly predict first-grade SCRIPT scores for the sample as a whole. When boys and girls were considered separately. VMI scores predicted handwriting SCRIPT scores for girls, but accounted for only 10% of the variance. Successful performance on the first nine VMI figures was significantly associated with handwriting for girls but not boys, while the oblique cross did not significantly predict handwriting performance. These results do not provide clear support for administration of the Developmental Test of Visual-Motor Integration during kindergarten as a tool to identify children at risk for handwriting difficulties.     

Bioelectrical potentials of Philodendron cordatum: a new method for investigation of behavior in plants

We explored the prospect of using the bioelectrical potentiaLs of Philodendron cordatum as a new method for studying the behavior of plants. The bioelectrical potentials were recorded from equipment typically associated with EEG recordings. Plants were exposed to a 6-hr. training period of light only, dark only, or alternating 1-min. periods of light/dark. Following training, all plants were exposed to a 10-min. testing period in darkness during which bioelectrical potentials were recorded. Power of the bioelectric potentials was compared between groups of plants for frequencies between 0.1 and 10.0 Hz. Significant main effects of group and frequency were found, raising questions about the possibility of "learning" in P. cordatum.     

Conceptual and perceptual processes in prospective remembering: differential influence of attentional resources

Does prospective remembering rely on strategic, attentionally demanding processes? We report three experiments suggesting that the extent to which attentional processes are required varies according to the character of ongoing task processing. Study-test changes in the semantic context of targets had a negative effect on prospective memory performance when participants were engaged in a conceptually focused (sentence verification) task (Experiment 1). Similarly, prospective remembering was lower following study-test changes in perceptual format (font) in the context of a perceptually focused (readability rating) ongoing task (Experiment 2). However, although dividing attention at retrieval had a negative effect during the performance of an ongoing conceptual task (Experiments 1 and 3), it had no effect during an ongoing perceptual task (Experiments 2 and 3). Thus, both perceptual and conceptual process are implicated in prospective remembering, but the processing focus of the task in which remembering should occur may mediate the requirement for strategic processes. These findings suggest that more than one retrieval route is available for prospective remembering and that selection of the route depends on the nature of the task and the processing that occurs at encoding and retrieval.     

Cognitive Response Repertoires to Child Noncompliance by Mothers of Aggressive Boys

Cognitive response repertoires to videotaped child noncompliance episodes were examined in mothers of aggressive (MAs) and nonaggressive 4–6-year-old boys. Mothers provided open-ended solutions to three subtypes of child noncompliance under conditions of time pressure, or after they waited for 15 s to consider alternatives. Solutions were coded as assistance/facilitation, coercion, deference, or explanation/clarification. Compared with controls, MAs offered fewer explanation/clarification responses, more coercive responses, and fewer unique solutions during pressured responding. Two to 6 weeks later, mothers were videotaped while participating with their sons in a challenging block-building task. Maternal responses to the vignettes predicted conflict escalation during block building, even after rates of concurrent and past child noncompliance were partialled out. Implications for parent-training models are considered.