Sensory Processing in Rhesus Monkeys: Developmental Continuity,Prenatal Treatment,and Genetic Influences

Neonatal sensory processing (tactile and vestibular function) was tested in 78 rhesus macaques from two experiments. At ages 4–5 years, striatal dopamine D₂ receptor binding was examined using positron emission tomography. At ages 5–7 years, adult sensory processing was assessed. Findings were: (a) prenatal stress exposure yielded less optimal neonatal sensory processing; (b) animals carrying the short rh5‐HTTLPR allele had less optimal neonatal sensory scores than monkeys homozygous for the long allele; (c) neonatal sensory processing was significantly related to striatal D₂ receptor binding for carriers of the short allele, but not for animals homozygous for the long allele; and (d) there was moderate developmental continuity in sensory processing from the neonatal period to adulthood.     

Exploring the significance of resource-rich views in science education

In a recently published article in Cultural Studies of Science Education (Volume 6, Issue 2) titled, What does playing cards have to do with science? A resource-rich view of African American young men, Alfred Schademan (Cult Stud Sci Educ 6:361–380, 2011) examines the resources that African American young men learn through playing a card came called Spades. In his ethnographic study, he takes a resource-rich view of the players, highlights the science-related resources they demonstrate, and challenges deficit notions of these young men. Three Forum response papers complement Schademan’s research. The first is written by Nancy Ares, the second is coauthored by Allison Gonsalves, Gale Seiler, and Dana Salter, and the third is written by Philemon Chigeza. All three of these response papers elaborate on his points and emphasize issues inherent in working towards resource-rich views in science education. In this paper, I draw on all four papers to explore the possibilities in recognizing, highlighting, and accepting the resources that students bring as being resources for science learning.     

Virtual cerebral ventricular system: an MR-based three-dimensional computer model

The inherent spatial complexity of the human cerebral ventricular system, coupled with its deep position within the brain, poses a problem for conceptualizing its anatomy. Cadaveric dissection, while considered the gold standard of anatomical learning, may be inadequate for learning the anatomy of the cerebral ventricular system; even with intricate dissection, ventricular structures remain difficult to observe. Three-dimensional (3D) computer reconstruction of the ventricular system offers a solution to this problem. This study aims to create an accurate 3D computer reconstruction of the ventricular system with surrounding structures, including the brain and cerebellum, using commercially available 3D rendering software. Magnetic resonance imaging (MRI) scans of a male cadaver were segmented using both semiautomatic and manual tools. Segmentation involves separating voxels of different grayscale values to highlight specific neural structures. User controls enable adding or removing of structures, altering their opacity, and making cross-sectional slices through the model to highlight inner structures. Complex physiologic concepts, such as the flow of cerebrospinal fluid, are also shown using the 3D model of the ventricular system through a video animation. The model can be projected stereoscopically, to increase depth perception and to emphasize spatial relationships between anatomical structures. This model is suited for both self-directed learning and classroom teaching of the 3D anatomical structure and spatial orientation of the ventricles, their connections, and their relation to adjacent neural and skeletal structures.     

Teaching Through Testimonio: Accessing Community Cultural Wealth in School

Using the concept of community cultural wealth, this article examines the ways that a group of 3rd-grade students engaged in writing testimonios, or personal narratives, to reflect on their cultural and linguistic lives in and outside of the classroom. Countering deficit notions of Latina/o students, families, and communities, this study illuminates the powerful ways that students utilize various forms of community cultural wealth. The findings indicate that testimonio can be an effective pedagogical tool to help students identify their individual and collective community cultural wealth and draw on these forms of knowledge in the elementary classroom.     

Contemporary Scientists Discuss the Need for Openness and Open-Mindedness in Science and Society

We report on findings from a qualitative study of Australian scientists whose work brings them into contact with the public. This research sought to understand how a school science curriculum could better represent the work of scientists today. We discuss the views expressed by our participant scientists about the importance of openness and open-mindedness in their work, including their engagement with the public. They described openness as an important characteristic of science. Our participants also see open-mindedness on the part of both scientists and members of the public as important for productive relationships. They see the development of such relationships as an essential facet of their work. The views expressed by these scientists provide a provocative insight into the ways in which contemporary scientists see their work and relationships with their communities. Their perspectives have important implications for approaches to teaching science in schools.     

The normativity of the helping child – meta-ethnographic perspectives on individualised learning in age-mixed classrooms

ABSTRACT

This paper discusses possibilities of synthesising ethnographic data. This discussion implies a critical appraisal of the methodology of ‘Meta-Ethnography’. Taking Noblit’s and Hare’s concept of Meta-Ethnography as a starting point to develop their own practice of synthesising data, the paper suggests to reconsider the possibility to bring in primary data into the synthesis, to involve primary researchers and to develop a grounded theoretical synthesis. Building on their own practice of a shared grounded synthesis, the authors discuss how a synthesis of ethnographic data conducted by two primary researchers has the potential to open new conceptual and theoretical perspectives on individualised learning in age-mixed classes. The results of the ‘Shared Grounded Synthesising’ indicate a strong tendency of individualised learning and teaching to rely on and produce the normativity of the helping child.     

Shifting relations with the more-than-human: six threshold concepts for transformative sustainability learning

Using the iterative process of action research, we identify six portals of understanding, called threshold concepts, which can be used as curricular guideposts to disrupt the socially constituted separation, and hierarchy, between humans and the more-than-human. The threshold concepts identified in this study provide focal points for a curriculum in transformative sustainability learning which (1) acknowledges non-human agency; and (2) recognizes that the capacity to work with multiple ways of knowing is required to effectively engage in the process of sustainability knowledge creation. These concepts are: there are different ways of knowing; we can communicate with non-human nature and non-human nature can communicate with us; knowing is relational; transrational intuition and embodied knowing are valuable and valid ways of knowing; worldview is the lens through which we view reality; and the power of dominant beliefs (represented in discourse) supports and/or undermines particular ways of knowing and being as in/valid.     

Working memory capacity and disfluency effect: an aptitude-treatment-interaction study

According to Cognitive Load Theory, learning material should be designed in a way to decrease unnecessary demands on working memory (WM). However, recent research has shown that additional demands on WM caused by less legible texts lead to better learning outcomes. This so-called disfluency effect can be assumed as a metacognitive regulation process during which learners assign their cognitive resources depending on the perceived difficulty of a cognitive task. Increasing the perceived difficulty associated with a cognitive task stimulates deeper processing and a more analytic and elaborative reasoning. Yet there are studies which could not replicate the disfluency effect indicating that disfluency might be beneficial only for learners with particular learner characteristics. Additional demands on working memory caused by disfluent texts are possibly just usable by learners with a high working memory capacity. Therefore the present study investigated the aptitude-treatment-interaction between working memory capacity and disfluency. Learning outcomes were measured by means of a retention, a comprehension, and a transfer test. Moreover, the three types of cognitive load (intrinsic, extraneous, and germane) were assessed. The results revealed significant aptitude-treatment-interaction effects with respect to retention and comprehension. Working memory capacity had a significant influence only in the disfluency condition: The higher the working memory capacity, the better the retention and comprehension performance in the disfluency condition. No effects were found with respect to transfer or cognitive load. Thus, the role of metacognitive regulation and its possible effects on cognitive load need further investigation.     

Conceptual change research and science education practice: a response from educators

We discuss the eight papers in this issue of Cultural Studies of Science Education focusing on the debate over conceptual change in science education and explore the issues that have emerged for us as we consider how conceptual change research relates to our practice as science educators. In presenting our interpretations of this research, we consider the role of participants in the research process and contextual factors in conducting research on science conceptions, and draw implications for the teaching of science.