Individual differences in executive function partially explain the socioeconomic gradient in middle‐school academic achievement

Children from families with low socioeconomic status (SES) earn lower grades, perform worse on achievement tests, and attain less education on average than their peers from higher‐SES families. We evaluated neurocognitive mediators of SES disparities in achievement in a diverse sample of youth whose data were linked to administrative records of performance on school‐administered tests of 7th grade reading and math proficiency (N = 203). We used structural equation modeling to evaluate whether associations between SES (measured at ages 8–9) and achievement (measured at age 13) are mediated by verbal ability and executive function (measured at age 10), a suite of top‐down mental processes that facilitate control of thinking and behavior. Children from relatively higher‐SES families performed better than their lower‐SES peers on all neurocognitive and achievement measures, and SES disparities in both reading and math achievement were partially mediated by variation in executive function, but not verbal ability. SES disparities in executive function explained approximately 37% of the SES gap in math achievement and 17% of the SES gap in reading achievement. Exploratory modeling suggests that SES‐related variation in working memory may play a particularly prominent role in mediation. We discuss potential implications of these findings for research, intervention programming, and classroom practice.     

Physical activity, sedentary leisure, short sleeping and childhood overweight

In this study, using the path analysis, the relation between physical activity, non-regulated activity, sedentary leisure, hours of sleeping, and the body mass index (BMI) was analyzed. The sample was made up of 103 students, 59 girls and 44 boys, aged between 9 and 10 1/2 years. An individual interview was performed in which the children were asked about the TV programs they watched each day of the week; the time they played with the console and the computer; the time dedicated to sports, games and other activities. The results showed that sedentary leisure (number of hours of TV, computer and console) maintains a significant and inverse relation with the hours of sleeping, non-regulated activity (games and others activities), and physical sport activity. The difference between the results of this study and the previous one is discussed, taking into account the recruitment procedure of the participants.     

assessing the effectiveness of statistical classification techniques in predicting future employment of participants in the temporary assistance for needy families program

Three classification techniques (Chi‐square Automatic Interaction Detection [CHAID], Classification and Regression Tree [CART], and discriminant analysis) were tested to determine their accuracy in predicting Temporary Assistance for Needy Families program recipients' future employment. Technique evaluation was based on proportion of correctly predicted cases and 6 other criteria. Sustained employment was associated with both recipients' subjective work‐related skills assessments and their objective test scores, and with their educational levels and marital status. Correct case classification by model was 74% for CHAID, 75% for CART, and 68% for discriminant analysis. Results suggest these classification tools can be useful supplements in assessments of clients' employment potentials.     

Hope in a Time of Cholera

What are the internal conditions or mental states that may facilitate the moving on with life? How does one explain that some, after undergoing severe trauma, fail to go on with productive and creative lives while others do?In this paper, I shall explore the effect of hope and its central position in mobilizing traumatized individuals so that they can move on with their lives. I shall be focusing on a specific aspect of trauma often neglected in the literature, namely the trauma elicited by the sudden, almost overnight loss of monetary funds accumulated over years of hard work. I will be referring to the psychological impact suffered by Argentineans after severe economic measures taken by the government in late 2001. I shall delve into these solutions and attempt to explore their influence on a contemporary exodus from Argentina.Hope nurtured by despair will be discussed. Is hope a mere palliative, a mental configuration coupling with a furtive affective state? Hope joins the ranks of religion in building a buffer against the silent awareness of inner despair—the most private of madness. I shall try to discuss how hope brings to the fore psyche's devices that are deployed in attempting to deal with our deepest fears.     

Death feigning by grass snakes (Natrix natrix) in response to handling by human "predators."

Death feigning, a variant of tonic immobility, is usually interpreted as a last-resort antipredator measure. The authors describe death feigning in grass snakes (Natrix natrix) and test some of its potential correlates. Death feigning was seen in 66% of wild-caught snakes but was not seen in hatchlings from laboratory-incubated eggs. Minimal indication of death feigning was mouth gaping, often with the tongue hanging free, but more dramatic cases involved voluntary supination and/or lack of muscle tone. Aside from hatchlings, which did not feign death, there was little variation in frequency or intensity of death feigning with body size. There was no effect of body temperature on death feigning nor were snakes that were moving when caught less likely to feign death than those that were not moving. Interpretation of the adaptive value of death feigning in grass snakes or in other animals is hampered by lack of evidence of this behavior in the field in response to natural predators.     

The Evolution of Retribution: Intuitions Undermined

Recent empirical work suggests that emotions are responsible for anti‐consequentialist intuitions. For instance, anger places value on actions of revenge and retribution, value not derived from the consequences of these actions. As a result, it contributes to the development of retributive intuitions. I argue that if anger evolved to produce these retributive intuitions because of their biological consequences, then these intuitions are not a good indicator that punishment has value apart from its consequences. This severs the evidential connection between retributive intuitions and the retributive value of punishment. This argument may generalize to other deontological intuitions and theories.