Tonic Activity Level in the Right Prefrontal Cortex Predicts Individuals' Risk Taking

ABSTRACT— Human risk taking is characterized by a large amount of individual heterogeneity. In this study, we applied resting-state electroencephalography, which captures stable individual differences in neural activity, before subjects performed a risk-taking task. Using a source-localization technique, we found that the baseline cortical activity in the right prefrontal cortex predicts individual risk-taking behavior. Individuals with higher baseline cortical activity in this brain area display more risk aversion than do other individuals. This finding demonstrates that neural characteristics that are stable over time can predict a highly complex behavior such as risk-taking behavior and furthermore suggests that hypoactivity in the right prefrontal cortex might serve as a dispositional indicator of lower regulatory abilities, which is expressed in greater risk-taking behavior.     

Fathers’ and Mothers’ Involvement with Their Adolescents

We explored mothers’ and fathers’ time spent with their adolescents and found that mothers reported spending more time with their adolescents than did fathers. Developmental patterns were found for some aspects of time involvement, with both mothers and fathers reporting higher involvement with younger adolescents. Ratings of time-spent were not associated with adolescents’ self-reported emotional/behavioral problems. Both mothers and fathers agreed that mothers had more responsibility for adolescents’ discipline, daily care, and recreational activities. Mothers and fathers reported comparable levels of satisfaction with this arrangement. Mothers, and to a lesser extent fathers, reported greater satisfaction with the division of labor when fathers showed higher levels of responsibility for adolescents’ activities. Satisfaction with the division of labor was inversely related to interparental conflict. Few differences were found based on adolescent gender for any of these variables. Results are discussed within the context of mother–child and father–child relationships and family functioning.     

What Happens After the Demonstration Phase? The Sustainability of Canada's At Home/Chez Soi Housing First Programs for Homeless Persons with Mental Illness

This research examined the sustainability of Canada's At Home/Chez Soi Housing First (HF) programs for homeless persons with mental illness 2 years after the end of the demonstration phase of a large (more than 2000 participants enrolled), five‐site, randomized controlled trial. Qualitative interviews were conducted with 142 participants (key informants, HF staff, and persons with lived experience) to understand sustainability outcomes and factors that influenced those outcomes. Also, a self‐report HF fidelity measure was completed for nine HF programs that continued after the demonstration project. A cross‐site analysis was performed, using the five sites as case studies. The findings revealed that nine of the 12 HF programs (75%) were sustained, and that seven of the nine programs reported a high level of fidelity (achieving an overall score of 3.5 or higher on a 4‐point scale). The sites varied in terms of the level of systems integration and expansion of HF that were achieved. Factors that promoted or impeded sustainability were observed at multiple ecological levels: broad contextual (i.e., dissemination of research evidence, the policy context), community (i.e., partnerships, the presence of HF champions), organizational (i.e., leadership, ongoing training, and technical assistance), and individual (i.e., staff turnover, changes, and capacity). The findings are discussed in terms of the implementation science literature and their implications for how evidence‐based programs like HF can be sustained.     

Meta-Analyses of the Associations Between Disinhibited Social Engagement Behaviors and Child Attachment Insecurity or Disorganization

Children with disinhibited social engagement disorder show reduced reticence with strangers, do not check back with their caregiver after venturing away, and may willingly leave with an unfamiliar adult. The recent DSM-5 has moved away from an attachment framework to understand disinhibited social engagement behavior (DSEB) due to studies indicating its presence in previously institutionalized children even after these children are adopted and show a selective, more secure attachment with their substitute caregiver (e.g. Chisholm et al., 1998). This meta-analysis aims to clarify the size of the associations between DSEB and attachment insecurity or disorganization. It also examines whether studies effect sizes differ according to various moderators (e.g., child age, type of attachment and DSEB measures). The results (k?=?24) showed that the associations between DSEB and attachment insecurity (d?=?0.48) or attachment disorganization (d?=?0.47) were of small magnitude. There were no publication biases. As for moderator analyses on both attachment insecurity and disorganization, the effect sizes in studies using DSEB observational measures (respectively d?=?0.63 and 0.57) were of moderate magnitude and stronger than those in studies not using an observational component (respectively d?=?0.28 and 0.32). Given these small-to-moderate associations, attachment can be considered a relationship process associated with DSEB, and attachment-informed interventions could be potential tools to reduce DSEB in children. Nevertheless, given the sizable unshared portion of variance between DSEB and child attachment, future studies should examine other variables related to caregiving and noncaregiving contexts to further understand DSEB.

     

Timing of dietary change in response to a telephone counseling intervention: evidence from the WHEL study

OBJECTIVE: Little is known about temporal patterns of diet change within interventions, nor about predictors of early and sustained successful change. Social-cognitive theory asserts that early successes in achieving behavior change increase self-efficacy, leading to longer-term success. DESIGN: The authors conducted exploratory cluster analyses using dietary data from the first month of the telephone counseling intervention of the Women's Healthy Eating and Living (WHEL) Study. MAIN OUTCOME MEASURE: Change in dietary pattern at three early intervention timepoints. RESULTS: Three clusters were identified: Cluster 1 (25%) was close to meeting study goals at baseline, but still made major changes; Cluster 2 (49%) and Cluster 3 (26%) were not achieving study goals at baseline, but Cluster 2 made substantial immediate changes, while Cluster 3 changed their diet more gradually. Baseline demographic and behavioral variables were associated with cluster membership; however, the strongest predictors of cluster were self-efficacy, motivation, and approaches to study goals. Cluster membership predicted dietary pattern at 12 months. CONCLUSION: These data suggest that a one-on-one telephone counseling intervention that is intensive in the early weeks may maximize the level of change achieved in a study.     

Growth points in research on memory and hippocampus.

We present an overview of two of our on-going projects relating processes in the hippocampus to memory. We are trying to understand why retrograde amnesia occurs after damage to the hippocampus. Our experiments establish the generality of several new retrograde amnesia phenomena that are at odds with the consensus view of the role of the hippocampus in memory. We show in many memory tasks that complete damage to the hippocampus produces retrograde amnesia that is equivalent for recent and remote memories. Retrograde amnesia affects a much wider range of memory tasks than anterograde amnesia. Normal hippocampal processes can interfere with retention of a long-term memory stored outside the hippocampus. We conclude that the hippocampus competes with nonhippocampal systems during memory encoding and retrieval. Finally, we outline a project to understand and manipulate adult hippocampal neurogenesis in order to repair damaged hippocampal circuitry to recover lost cognitive functions.     

Mental model construction in linear reasoning: Evidence for the construction of initial annotated models

According to the mental model theory, reasoners build an initial model representing the information given in the premises. In the context of relational reasoning, the question arises as to which kind of representation is used to cope with indeterminate or multimodel problems. The present article presents an array of possible answers arising from the initial construction of complete explicit models, partial explicit models, partial implicit models, a single "isomeric" model, or a single annotated model. Predictions generated from these views are tested in two experiments that vary the problem structure and the number of models consistent with the premises. Analyses of the premise processing times, answering times and accuracy show that the annotated model yields the best fit of the data. Implications of these findings for the mental model theory as developed for relational reasoning are discussed.     

Motor and Visual-spatial Cognition Development in Primary School-Aged Children in Cameroon and Germany

It was the main goal of this study to investigate the motor and visual-spatial development in primary school-aged children in Cameroon and Germany. Thirty-four children from each country completed a motor test and a mental rotation test. It was found that children in Cameroon showed a better motor ability (better overall gross motor score and also on most single items) than children in Germany did. This can be explained by the early motor stimulation in infancy in Cameroon. Concerning mental rotation performance, Cameroonian children perform below chance level. A positive correlation between the overall motor ability and mental rotation performance could only be analyzed and conducted in the German sample. Therefore, this study emphasizes the need for the development of culture-fair cognitive tests.     

“A new book in Jewish affairs begins”: Maurice de Hirsch and the waning power of Jewish philanthropy at the Fin-de-Siècle

This article looks at Jewish responses to the death of the banker, railroad entrepreneur, and philanthropist Maurice de Hirsch in 1896, the same year that Theodor Herzl published his Jewish State. Examining printed eulogies and obituaries that appeared in Jewish newspapers, from Eastern Europe to France, and from Germany to the Ottoman Empire, the article demonstrates how contemporaries understood the passing of Baron Hirsch as the end of a golden age of Jewish philanthropy. While they celebrated the legacy of the late benefactor, the leaders of Jewish public opinion across Europe realized that the challenges that began to undermine the liberal order established in the century of emancipation were calling for a political response that philanthropy could no longer offer.