The Effect of Executive Function on Biological Reasoning in Young Children: An Individual Differences Study

There is substantial variance in the age at which children construct and deploy their first explicit theory of biology. This study tests the hypothesis that this variance is due, at least in part, to individual differences in their executive function (EF) abilities. A group of 79 boys and girls aged 5–7 years (with a mean age of 6½ years) were presented with two test batteries: (a) a biology battery that probed their understanding of life, death, and body functions and (b) an EF battery that tested working memory, inhibition, and set‐shifting skills. Individuals' EF scores significantly predict their biology scores, even after controlling for age and verbal IQ.     

The use of a collaborative math tutoring model to improve content knowledge among special education teacher candidates

ABSTRACT

The mathematics achievement gap in special education is a chronic and significant challenge for the field. The need for improved teacher preparation in mathematics is crucial in addressing this gap. This study examines a capstone experience in higher level mathematics tutoring for preservice teachers. Results indicate that the experience was effective at improving preservice teachers’ higher level math content knowledge compared to teachers who did not receive experiential math learning in their teacher preparation. Implications for preservice teacher preparation programs are presented.     

A Mixed Methods Examination of Gender Disparity in High Schools Implementing Advancement Via Individual Determination (AVID)

This mixed-methods research study offers insights and explanations into gender imbalance in the college readiness program, Advancement Via Individual Determination (AVID). Over 200 schools that have been implementing AVID for more than 4 years across the United States participated in this study. Three years of archived historical data pertaining to school demographic information and AVID certification information was accessed and analyzed to examine recruitment and retention of male and female students over time, as well as student enrollment in rigorous curriculum. Our research indicated that at the high school level, gender disparity became most apparent in the 11th and 12th grades. Results indicated that schools that struggled to recruit and retain boys continued to enroll AVID students, both boys and girls, into rigorous advanced placement curriculum at comparable rates as schools that did not struggle to recruit and retain boys in the program. This indicates that once in AVID, boys and girls are provided equal access to rigor; however, recruiting and retaining boys in AVID continues to be a challenge for AVID schools. Research participants indicated that academic identity, peer and family support, leadership and mentoring opportunities and male role models influence male participation in AVID.     

Braided composite materials for the production of lightweight, high rigidity golf shafts

Braiding is not currently used in the production of golf shafts. The objective of this work was to develop, through a modelling process consisting of altering lamina sequence, a golf shaft, using braided laminas, which would have mass, stiffness and torque comparable to commercially available composite and steel shafts. A 2D conical braided composite model was previously developed and validated to predict elastic constants of braided closed meshed structures. Energy methods were used to calculate the stiffness and torque of shafts using prescribed industry approaches. Shaft mass was calculated based on geometry and density of constitutent materials. Modelled shafts had both braided and unidirectional layers and compared favourably with or were better than commercially available composite and steel shafts in terms of deflection force and twist angle; they had the same weight as composite shafts but were much lighter than steel shafts. If these findings are verified, braided composites would be a viable and effective approach to the design of future golf shafts.     

Constraints on conceptual development: a case study of the acquisition of folkbiological and folksociological knowledge in Madagascar

How different are the concepts held by children who grow up in a North American middle class neighborhood and by children who grow up in a rural Malagasy fishing village? By probing Malagasy children's and adults' conceptual representations of human and animal kind, biological inheritance, innate potential and family relations, the studies presented in this Monograph address current debates about the acquisition and the nature of concepts in the domains of folkbiology and folksociology. Cross-cultural and developmental studies of this kind bear on the hypothesis that conceptual development in these domains is supported and constrained by innate conceptual content. If so, one would expect cross-cultural universality in the relevant adult concepts and their early emergence in childhood regardless of widely different input conditions. We chose to conduct these studies among the Vezo of Madagascar because the ethnographic literature has attributed to them folkbiological and folksociological theories that are radically different, even in commensurable, with those of North American adults. Vezo therefore provide a challenging test for the innate conceptual constraints hypothesis.Four studies probed aspects of biological and sociological reasoning of Vezo children, adolescents and adults through a number of adoption scenarios. Despite ethnographic reports to the contrary, we found cross-cultural convergence in adult concepts of biological inheritance, but the pattern of development of this concept differed greatly from that seen in North America. Moreover, in agreement with the ethnographic literature, we found that Vezo adults have constructed a distinctive theory of social group identity. However, we found that children's reasoning in this domain is under the influence of endogenous constraints that are overturned in the course of development. Finally, we found cross-cultural convergence in adults' concept of species kind, as well as evidence for the early emergence of this concept. In light of these findings, we discuss the nature of the constraints on children's conceptual representations, the developmental process through which the adults' concepts are constructed, and relations between Vezotheories of folkbiology and folksociology.     

Between Two Worlds: Australian Publishing on the Horns of an Import Dilemma

This article looks at the consequences of the 1991 amendment to the Australian Copyright Act, which meant that, for the copyright owner or authorised distributor to attain the right to control imports, it had to make the book available in Australia within 30 days of first publication overseas; and, to retain that right, it had to notify the retailer within 7 days of receiving an order whether it could be fulfilled within 90 days, and then in fact do so (. Accessed 28 June 2008). The article discusses the background to that change, what has happened since and what arguments are marshalled by those in favour of the status quo (restrictions that must be qualified for), and those in favour of a completely open market. The arguments used say much about the current preoccupations of those in Australian publishing. The debate around whether booksellers should be free to import copies of a new book from any supplier willing to sell them boils down to four issues: the availability in Australia of books published overseas; the price of books in Australia; the preservation of Australian publishing; and the protection of the rights of copyright holders. Those in favour of the open market believe that it would improve the first two without diminishing the latter two; those who support the status quo, that changing would bring no substantial benefits, and hurt both publishing and the rights of copyright holders. In summary, the reasons for maintaining the status quo are that things work fine as they are; that Australian literature (authors, bookshops, publishers) would suffer if things changed; and that the publisher is entitled to protect its investment through territorial control of copyright. The reasons for going to a completely open market are that only an open market can determine market price; that booksellers are unfairly disadvantaged competing against online sellers, on whom parallel importing restrictions are effectively not imposed; that copyright holders lose their rights when they sell something, and shouldn’t get a secondary chance to protect their investment; there is already a de facto open market, which unfairly restricts those who obey the law; there is a narrow window of opportunity for selling a book, which the current restrictions don’t serve; and the current situation is a poor compromise that doesn’t achieve the benefits of the open market.