Does executive function mediate the path from mothers' depressive symptoms to young children's problem behaviors?

This study investigated the mediation role played by children's executive function in the relationship between exposure to mild maternal depressive symptoms and problem behaviors. At ages 2, 3, and 6years, 143 children completed executive function tasks and a verbal ability test. Mothers completed the Beck Depression Inventory at each time-point, and teachers completed the Strengths and Difficulties Questionnaire at child age 6. Longitudinal autoregressive mediation models showed a mediation effect that was significant and quite specific; executive function (and not verbal ability) at age 3 mediated the path between mothers' depressive symptoms (but not general social disadvantage) at the first time-point and children's externalizing and internalizing problems at age 6. Improving children's executive functioning might protect them against the adverse effects of exposure to maternal depressive symptoms.This research was funded by a grant to Claire Hughes from the Economic and Social Research Council (ref: ES/D00554X/1). We thank the families who participated in the Toddlers Up study.This is the final version of the article. It first appeared from Elsevier via http://dx.doi.org/10.1016/j.jecp.2015.09.02

Performing the Rural: Practicing Rural Space Through Cars

The British notion of ‘rural’ concerns this thesis. How is it produced? How does it endure? What geographical scale does it manifest at? What do (re)productions of rural entail in practice? Beginning with the recognition that British rurality is both discursive and geographically locatable (Cloke, 2000), but, in practice, these notions are not mutually exclusive (Halfacree, 2006), the thesis seeks to fundamentally re-theorise how rural (space) is (re)produced. Realising the Research opens the thesis, establishing that the car offers a complex material lens through which the empirical research can ensue. Then, Read/Reworked comprehensively layers several theoretical influences to developing Halfacree’s (2006) triad for rural space. The theoretical foundation for the thesis positions the phenomenological body as the pivotal framing for subjective engagements with rural space, drawing on Merleau-Ponty (1958) and Ingold’s (1993; 2001) notion of ‘taskscape’, but also utilising Schatzkian (1996; 2001; 2002) Practice Theory to unpack how subjective performances can manifest through driving (and other) practices. Following the theoretical framing, Rudiments and Routines illustrates how the research was methodologically conducted. The thesis’ empirical discussion is presented in four chapters: Road demonstrates the import road spaces have in shaping rural engagement; Rhythm asserts that temporality is pivotal in the production of rural space through driving practices; Re/View tackles the visual primacy of dominant discourses of rurality by emphasising the embodied rendering of seeing that manifests in practice; but, Ride focuses wholly on drawing out the embodied negotiation of car and countryside in practice, offering in-depth insight into how rural space nuances performances in practice. Each of the empirical chapters illuminates how subjective rural spaces endure through discursive, material and embodied relationality. Thus, in the final chapter, Rural, the presentation of the thesis triad is the culmination of the thesis, where rural space is positioned as (re)produced through social practices

Theory of mind in middle childhood: Longitudinal associations with executive function and social competence.

The vast majority of studies on theory of mind (ToM) have focused on the preschool years. Extending the developmental scope of ToM research presents opportunities to both reassess theoretical accounts of ToM and test its predictive utility. The twin aims of this longitudinal study were to examine developmental relations between ToM, executive function (EF), and teacher-rated social competence in middle childhood. One hundred thirty-seven children (69 males) were followed across a 4-year period spanning middle childhood (M ages at Waves 1 and 2 = 6.05, SD = .35, and 10.81, SD = .35, respectively). Individual differences in ToM were moderately stable across middle childhood. Although there were concurrent associations between ToM and EF at both time points, there were no longitudinal links between these constructs. In contrast, there were concurrent and longitudinal links between ToM and teacher-rated social competence, such that individual differences in ToM predicted later social competence at school. These results are discussed in light of competing theories about the links between ToM and EF and the importance of individual differences in ToM for children's social lives. (PsycINFO Database RecordThis is the author accepted manuscript. The final version is available from the American Psychological Association https://doi.org/10.1037/dev000010

Senescence as the main driver of iodide release from a diverse range of marine phytoplankton

The reaction between ozone and iodide at the sea surface is now known to be an important part of atmospheric ozone cycling, causing ozone deposition and the release of ozone-depleting reactive iodine to the atmosphere. The importance of this reaction is reflected by its inclusion in chemical transport models (CTMs). Such models depend on accurate sea surface iodide fields, but measurements are spatially and temporally limited. Hence, the ability to predict current and future sea surface iodide fields, i.e. sea surface iodide concentration on a narrow global grid, requires the development of process-based models. These models require a thorough understanding of the key processes that control sea surface iodide. The aim of this study was to explore if there are common features of iodate-to-iodide reduction amongst diverse marine phytoplankton in order to develop models that focus on sea surface iodine and iodine release to the troposphere. In order to achieve this, rates and patterns of changes in inorganic iodine speciation were determined in 10 phytoplankton cultures grown at ambient iodate concentrations. Where possible these data were analysed alongside results from previous studies. Iodate loss and some iodide production were observed in all cultures studied, confirming that this is a widespread feature amongst marine phytoplankton. We found no significant difference in log-phase, cell-normalised iodide production rates between key phytoplankton groups (diatoms, prymnesiophytes including coccolithophores and phaeocystales), suggesting that a phytoplankton functional type (PFT) approach would not be appropriate for building an ocean iodine cycling model. Iodate loss was greater than iodide formation in the majority of the cultures studied, indicating the presence of an as-yet-unidentified "missing iodine" fraction. Iodide yield at the end of the experiment was significantly greater in cultures that had reached a later senescence stage. This suggests that models should incorporate a lag between peak phytoplankton biomass and maximum iodide production and that cell mortality terms in biogeochemical models could be used to parameterise iodide production

Lost in Translation? Comparing British, Japanese, and Italian Children’s Theory-of-Mind Performance

Findings from cross-cultural theory-of-mind studies highlight potential measurement effects and both general (e.g., East-West) and specific (e.g., pedagogical experiences) cultural contrasts. We compared theory-of-mind scores for children from UK and Italy (two Western countries that differ in age of school entry) and Japan (a Far-Eastern country in which children, like their Italian counterparts, start school later than British children). Confirmatory factor analysis was applied to data from 268 age-gender- and verbal ability-matched 5- to 6-year olds. Key findings were that (i) all 8 indicators loaded onto a single latent factor; and (ii) this latent factor explained significant variance in each group, with just one indicator showing differential item functioning. Supporting the importance of pedagogical experiences, British children outperformed both their Italian and Japanese counterparts

Relations Between Molecular Cloud Structure Sizes and Line Widths in the Large Magellanic Cloud

We present a comparative study of the size-line width relation for substructures within six molecular clouds in the Large Magellanic Cloud (LMC) mapped with the Atacama Large Millimeter/submillimeter Array (ALMA). Our sample extends our previous study, which compared a Planck detected cold cloud in the outskirts of the LMC with the 30 Doradus molecular cloud and found the typical line width for 1 pc radius structures to be 5 times larger in 30 Doradus. By observing clouds with intermediate levels of star formation activity, we find evidence that line width at a given size increases with increasing local and cloud-scale 8${\mu}$m intensity. At the same time, line width at a given size appears to independently correlate with measures of mass surface density. Our results suggest that both virial-like motions due to gravity and local energy injection by star formation feedback play important roles in determining intracloud dynamics.Comment: 20 pages, to appear in ApJ. Data presented in this paper can be found at https://mmwave.astro.illinois.edu/almalmc

ALMA Resolves 30 Doradus: Sub-parsec Molecular Cloud Structure Near the Closest Super-Star Cluster

We present ALMA observations of 30 Doradus -- the highest resolution view of molecular gas in an extragalactic star formation region to date (~0.4pc x 0.6pc). The 30Dor-10 cloud north of R136 was mapped in 12CO 2-1, 13CO 2-1, C18O 2-1, 1.3mm continuum, the H30alpha recombination line, and two H2CO 3-2 transitions. Most 12CO emission is associated with small filaments and clumps (<1pc, ~1000 Msun at the current resolution). Some clumps are associated with protostars, including "pillars of creation" photoablated by intense radiation from R136. Emission from molecular clouds is often analyzed by decomposition into approximately beam-sized clumps. Such clumps in 30 Doradus follow similar trends in size, linewidth, and surface density to Milky Way clumps. The 30 Doradus clumps have somewhat larger linewidths for a given size than predicted by Larson's scaling relation, consistent with pressure confinement. They extend to higher surface density at a given size and linewidth compared to clouds studied at 10pc resolution. These trends are also true of clumps in Galactic infrared-dark clouds; higher resolution observations of both environments are required. Consistency of clump masses calculated from dust continuum, CO, and the virial theorem reveals that the CO abundance in 30 Doradus clumps is not significantly different from the LMC mean, but the dust abundance may be reduced by ~2. There are no strong trends in clump properties with distance from R136; dense clumps are not strongly affected by the external radiation field, but there is a modest trend towards lower dense clump filling fraction deeper in the cloud.Comment: accepted to Ap

Lost in Translation? Comparing British, Japanese, and Italian Children’s Theory-of-Mind Performance

Findings from cross-cultural theory-of-mind studies highlight potential measurement effects and both general (e.g., East-West) and specific (e.g., pedagogical experiences) cultural contrasts. We compared theory-of-mind scores for children from UK and Italy (two Western countries that differ in age of school entry) and Japan (a Far-Eastern country in which children, like their Italian counterparts, start school later than British children). Confirmatory factor analysis was applied to data from 268 age-gender- and verbal ability-matched 5- to 6-year olds. Key findings were that (i) all 8 indicators loaded onto a single latent factor; and (ii) this latent factor explained significant variance in each group, with just one indicator showing differential item functioning. Supporting the importance of pedagogical experiences, British children outperformed both their Italian and Japanese counterparts.Peer Reviewe

A perspective on the impacts of microplastics on mosquito biology and their vectorial capacity

Microplastics (plastic particles <5 mm) permeate aquatic and terrestrial ecosystems and constitute a hazard to animal life. Although much research has been conducted on the effects of microplastics on marine and benthic organisms, less consideration has been given to insects, especially those adapted to urban environments. Here, we provide a perspective on the potential consequences of exposure to microplastics within typical larval habitat on mosquito biology. Mosquitoes represent an ideal organism in which to explore the biological effects of microplastics on terrestrial insects, not least because of their importance as an infectious disease vector. Drawing on evidence from other organisms and knowledge of the mosquito life cycle, we summarise some of the more plausible impacts of microplastics including physiological, ecotoxicological and immunological responses. We conclude that although there remains little experimental evidence demonstrating any adverse effect on mosquito biology or pathogen transmission, significant knowledge gaps remain, and there is now a need to quantify the effects that microplastic pollution could have on such an important disease vector