Math anxiety, intrusive thoughts and performance: Exploring the relationship between mathematics anxiety and performance: The role of intrusive thoughts

The current study examined the relationship between math anxiety and arithmetic performance by focusing on intrusive thoughts experienced during problem solving. Participants (N = 122) performed two-digit addition problems on a verification task. Math anxiety significantly predicted response time and error rate. Further, the extent to which intrusive thoughts impeded calculation mediated the relationship between math anxiety and per cent of errors on problems involving a carry operation. Moreover, results indicated that participants experienced a range of intrusive thoughts and these were related to significantly higher levels of math anxiety. The findings lend support to a deficient inhibition account of the math anxiety-to-performance relationship and highlight the importance of considering intrusive thoughts in future work

Saturation-Dependence of Dispersion in Porous Media

In this study, we develop a saturation-dependent treatment of dispersion in porous media using concepts from critical path analysis, cluster statistics of percolation, and fractal scaling of percolation clusters. We calculate spatial solute distributions as a function of time and calculate arrival time distributions as a function of system size. Our previous results correctly predict the range of observed dispersivity values over ten orders of magnitude in experimental length scale, but that theory contains no explicit dependence on porosity or relative saturation. This omission complicates comparisons with experimental results for dispersion, which are often conducted at saturation less than 1. We now make specific comparisons of our predictions for the arrival time distribution with experiments on a single column over a range of saturations. This comparison suggests that the most important predictor of such distributions as a function of saturation is not the value of the saturation per se, but the applicability of either random or invasion percolation models, depending on experimental conditions

The Influence of French Colonialism on Patristic Studies: Archaeology and Colonial Resistance between 1930 and 1962.

The work of H.-I. Marrou is important in historiographic accounts of the development of patristic studies and late antiquity. From the 1930s onwards, Marrou and his peers made use of material evidence from North Africa produced by the rapidly professionalizing discipline of archaeology. Archaeological engagement with the past was determined by the wider colonial context in which these excavations took place and this shaped the representation of late ancient Christianity, particularly the life and work of Augustine of Hippo. At the same time, however, Augustine’s work gave Marrou the means to challenge France’s prosecution of the Algerian War

NF00-425 Resistance Management for European Corn Borer and Bt Transgenic Corn: Refuge Design and Placement (Revised October 2002)

One of the key issues surrounding the use of Bt transgenic corn hybrids is resistance management. These corn hybrids have been engineered to produce a version of the insecticidal protein from the naturally occurring soil bacterium, Bacillus thuringiensis (Bt), that is toxic to European corn borers and a few other insects. This NebFact discusses the important principles of resistance management for European corn borer and Bt corn and refuge considerations

Endogenous and Exogenous Time Pressure: Interactions with Mathematics Anxiety in Explaining Arithmetic Performance

Eighty adults performed mental arithmetic under endogenous (time limit) or exogenous (presence of a clock) time pressure. Results demonstrated a significant interaction between math anxiety and endogenous pressure: error rates were significantly greater among high math anxious individuals when given a time limit. A significant interaction was observed between exogenous time pressure and math anxiety: performance of low math anxious individuals was reduced when a clock was present. Effects were only present in response to problems involving a carry operation, supporting previous findings that math anxiety may be particularly detrimental on math problems that rely more on working memory resources. The findings suggest that the type of time pressure may need to be taken into account when designing assessments.N/

An English version of the mathematics teaching anxiety scale

This study represents the implementation of an English version of the Mathematics Teaching Anxiety Scale (MTAS), originally published in Turkey (Sari, 2014). One hundred and twenty-seven primary school teachers from across the U.K. completed the survey, including 74 qualified teachers and 53 trainees. Following item-reduction and factor analysis, the 19-item MTAS was found to have excellent internal consistency (α = .94) and has a two-factor structure. Factor one, labelled Self-Directed Mathematics Teaching Anxiety, includes 12 items pertaining to a teacher's own teaching practice and perceived ability, whereas factor two, labelled Pupil/Student-Directed Mathematics Teaching Anxiety, includes 7 items pertaining to anxiety concerning pupils/students failing assessments or not reaching curriculum/school targets. Pre-service teachers, compared to in-service teachers, self-reported significantly higher overall maths teaching anxiety. Among in-service teachers, there was a significant negative correlation between length of service and maths teaching anxiety. These findings are important in the context of retention issues in newly qualified teachers and the need to support trainees and newer teachers if they experience anxiety related to teaching maths.N/

Early Season Soybean Insects: Past Problems and Future Risk

The spring of 1994 saw many early season insect problems on soybeans in Iowa and, indeed, across much of the Midwest. Although early season problems on soybeans are not uncommon, certainly the scale of problems we saw in 1994 was unusual. Undoubtedly, many of these problems followed from weather, in particular the heavy rains of 1993. In this paper, we will briefly review some of the reasons behind the events we saw in 1994 and focus on the potential for future problems and their management. In particular, with the possibility of many acres coming into production out of the Conservation Reserve Program (CRP), there is a potential for specific insect problems that should be recognized

NF04-594 Resistanct Management for YieldGard Rootworm™ \u3cem\u3eBt\u3c/em\u3e Corn

In 2003, the U.S. Environmental Protection Agency and Monsanto announced the registration of YieldGard Rootworm™ corn containing event MON863. These hybrids express a protein in the roots from the soil bacterium, Bacillus thuringiensis (Bt) that is toxic to larval corn rootworms. This NebFact discusses management requirements, refuge considerations, within-field configurations when using YieldGard Rootworm™