White matter microstructure predicts individual differences in infant fear (But not anger and sadness)

We examine neural correlates of discrete expressions of negative emotionality in infants to determine whether the microstructure of white matter tracts at 1 month of age foreshadows the expression of specific negative emotions later in infancy. Infants (n = 103) underwent neuroimaging at 1-month, and mothers reported on infant fear, sadness, and anger at 6, 12, and 18 months using the Infant Behavior Questionnaire-Revised. Levels and developmental change in fear, sadness, and anger were estimated from mother reports. Relations between MRI and infant emotion indicated that 1-month white matter microstructure was differentially associated with level and change in infant fear, but not anger or sadness, in the left stria terminalis (p < 0.05, corrected), a tract that connects frontal and tempo-parietal regions and has been implicated in emerging psychopathology in adults. More relaxed constraints on significance (p < 0.10, corrected) revealed that fear was associated with lower white matter microstructure bilaterally in the inferior portion of the stria terminalis and regions within the sagittal stratum. Results suggest the neurobehavioral uniqueness of fear as early as 1 month of age in regions that are associated with potential longer-term outcomes. This work highlights the early neural precursors of fearfulness, adding to literature explaining the psychobiological accounts of affective development.

Highlights

• Expressions of infant fear and anger, but not sadness, increase from 6 to 18 months of age.
• Early neural architecture in the stria terminalis is related to higher initial levels and increasing fear in infancy.
• After accounting for fear, anger and sadness do not appear to be associated with differences in early white matter microstructure.
• This work identifies early neural precursors of fearfulness as early as 1-month of age.

     

A Cross-Cultural Look at Assessment Center Practices: Survey Results from Western Europe and North America

No recent survey documents assessment center (AC) practices across several countries. Therefore, we analyse AC practices in a sample of 97 organisations from nine countries in Western Europe and North America. We report findings regarding job analysis, dimensions, exercises, additional diagnostic methods, use of technology, assessor characteristics, contents and methods of assessor training, observational systems, information provided to participants, evaluation of participants' reactions, data integration, characteristics of feedback, and features after the AC. Finally, we compare our results with prior findings to identify trends over time and point out features of ACs that could be improved.
Face aux défis que soulèvent les centres d'évaluation (AC) dans les organisations internationales, nous proposons un modèle qui rend compte des variations transculturelles dans ces pratiques, variations relevant de données individuelles (la motivation et la qualification des experts en resources humaines), de conditions culturelles (le « contrôle de l'incertitude >> et la « distance hiérarchique >>) et de réalités institutionnelles (des differences dans le niveau officiel de collectivisme et des divergences en ce qui concerne les normes légales et les lois régissant l'emploi). Ce modèle est exploité pour expliquer les différences dans la planification, l'exécution et l'évaluation des AC dans des organisations situées dans neuf pays d'Europe de l'ouest et d'Amérique du nord. Nous mettons aussi en evidence des tendances sur le long terme dans les pratiques des AC et discutons de l'amélioration de ces pratiques et de l'orientation des futures recherches dans ce domaine.     

“Tower,Am I Cleared to Land?”: Problematic Communication in Aviation Discourse

This study examined problematic communication in pilot–air traffic controller (ATC) interaction. More than 15 hours of pilot–ATC dialogue were collected by monitoring control tower frequencies at 15 U.S. airports. The transcribed data yielded a total of 34 ATCs, 270 pilots, and 1,799 turns of talk. Analyses revealed that (a) communication problematics manifested in pilot turns more than ATC turns, (b) higher amounts of information led to increased problematic communication in the subsequent turn, and (c) linguistic violations of ATC protocol increased problematic communication in the subsequent turn. Partial support was found for the effect of frequency congestion on problematic communication. No effect was observed for airport size on problematic communication. The discussion addresses the significance of protocol deviations and system constraints for problematic communication. Applications for the findings in pilot–ATC radio interaction are also suggested.     

From the Flos Substantiae to the Vortex: A Shift in Leibniz's Early Philosophy

In February 1676, one of Leibniz's main concerns is with the problem of the seat of the soul and its relationship with the body, to which, in two very short papers, he provides two different solutions: the doctrine of the flos substantiae and the vortex theory. By analyzing the former, I suggest that, despite what other scholars claim, it is far from being an earlier exposition of the notion of monad. I argue that this doctrine is entertained by Leibniz only for a period, but is rejected later on and excluded from the final monadic system. This hypothesis seems to be supported by the shift to the notion of a vortex, which – despite having some evident pantheistic and monistic implications – offers a different solution to the problem of mind‐body union, by identifying the soul as the only cement of matter. In this article, by following the progress of such a shift, we discover some fascinating nuances in the young Leibniz's development.     

Estimating Age-Based Developmental Trajectories Using Latent Change Score Models Based on Measurement Occasion

Abstract

Accelerated longitudinal designs (ALDs) are designs in which participants from different cohorts provide repeated measures covering a fraction of the time range of the study. ALDs allow researchers to study developmental processes spanning long periods within a relatively shorter time framework. The common trajectory is studied by aggregating the information provided by the different cohorts. Latent change score (LCS) models provide a powerful analytical framework to analyze data from ALDs. With developmental data, LCS models can be specified using measurement occasion as the time metric. This provides a number of benefits, but has an important limitation: It makes it not possible to characterize the longitudinal changes as a function of a developmental process such as age or biological maturation. To overcome this limitation, we propose an extension of an occasion-based LCS model that includes age differences at the first measurement occasion. We conducted a Monte Carlo study and compared the results of including different transformations of the age variable. Our results indicate that some of the proposed transformations resulted in accurate expectations for the studied process across all the ages in the study, and excellent model fit. We discuss these results and provide the R code for our analysis.