Socio-scientific reasoning influenced by identities

Based on the comments by Lopez-Facal and Jiménez-Aleixandre, we consider that the cultural identities within Europe interfere with the question of the re-introduction of the Slovenian bear, generating a kind of “discrimination.” When the SAQs under debate run against the students’ systems of value, it seems that the closer the connection between the SAQs (socially acute questions) and the territorial and cultural identity, the more deeply the associated systems of values are affected; and the more the evidence is denied, the weaker the socio-scientific reasoning becomes. This result shows the importance of attempting to get the students to clarify the values underlying their socio-scientific reasoning. As Sadler observed, there was no transfer of socio-scientific reasoning on the three questions considered; each SAQ, as they are deeply related to social representations and identity, generated a specific line of reasoning balancing more or less each operation. Among various methods of teaching SAQs—problematizing, genetic, doctrinal and praxeological methods––socio-scientific reasoning may be a complex activity of problematization fostering the development of critical thinking. Confronted with the refusal to analyse the evidence in the case of the bear, and because of the nature of SAQs, we explore the notion of tangible proof. We think it relevant to study, together with the students, the processes of investigation used by the actors to establish or disestablish tangible proof on SAQs by analysing the intermediary states of the systems of proof, and possibly the “weak signals” which result in calling for the implementation of the precautionary principle.

Age differences in strategic planning as indexed by the tower of London

The present study examined age differences in performance on the Tower of London, a measure of strategic planning, in a diverse sample of 890 individuals between the ages of 10 and 30. Although mature performance was attained by age 17 on relatively easy problems, performance on the hardest problems showed improvements into the early 20s. Furthermore, whereas age-related performance gains by children and adolescents (ages 10-17) on the hardest problems were partially mediated by maturational improvements in both working memory and impulse control, improved performance in adulthood (ages 18+) was fully mediated by late gains in impulse control. Findings support an emerging picture of late adolescence as a time of continuing improvement in planned, goal-directed behavior.     

Identifying children at high risk for a child maltreatment report

Objective

To help professionals identify factors that place families at risk for future child maltreatment, to facilitate necessary services and to potentially help prevent abuse and neglect.

Method

The data are from a prospective, longitudinal study of 332 low-income families recruited from urban pediatric primary care clinics, followed for over 10 years, until the children were approximately 12 years old. Children with prior child protective services involvement (CPS) were excluded. The initial assessment included sociodemographic, child, parent and family level variables. Child maltreatment was assessed via CPS reports. Risk ratios (RRs) and their 95% confidence intervals (CIs) were estimated using Cox regression models.

Results

Of the 224 children without a prior CPS report and with complete data who were followed for an average of 10 years, 97 (43%) later had a CPS report. In a multivariate survival analysis, 5 risk factors predicted CPS reports: child's low performance on a standardized developmental assessment (RR = 1.23, 95% CI = 1.01-1.49, p = .04), maternal education ≤ high school (RR = 1.55, CI = 1.01-2.38, p = .04), maternal drug use (RR = 1.71, CI = 1.01-2.90, p < .05), maternal depressive symptoms (RR per one standard deviation higher score = 1.28, CI = 1.09-1.51, p < .01), and more children in the family (RR per additional child = 1.26, CI = 1.07-1.47, p < .01).

Conclusions

Five risk factors were associated with an increased risk for later maltreatment. Child health care and other professionals can identify these risk factors and facilitate necessary services to strengthen families, support parents and potentially help prevent child maltreatment.     

Combined effects of sleep deprivation and strenuous exercise on cognitive performances during The North Face® Ultra Trail du Mont Blanc® (UTMB®)

This study investigated the effects of combined sleep deprivation and strenuous exercise on cognitive and neurobehavioral performance among long-distance runners completing one of the most difficult ultramarathons in the world. Seventeen runners participated. Each had a wrist-worn actigraph throughout the race to record their sleep time. In addition, each individual’s performance in 10-min response-time tests before and after the race was recorded and a questionnaire enabled participants to report any difficulties they experienced during the competition. During race completion times of 27 to 44 h, combined acute lack of sleep (12 ± 17 min of rest during the race) and strenuous exercise (168.0 km) had marked adverse effects on cognitive performances ranging from mere lengthening of response time to serious symptoms such as visual hallucinations. This study suggests that regardless of rest duration and time in race, cognitive performances of ultramarathoners are adversely affected.