Animal vocal sequences: not the Markov chains we thought they were

Many animals produce vocal sequences that appear complex. Most researchers assume that these sequences are well characterized as Markov chains (i.e. that the probability of a particular vocal element can be calculated from the history of only a finite number of preceding elements). However, this assumption has never been explicitly tested. Furthermore, it is unclear how language could evolve in a single step from a Markovian origin, as is frequently assumed, as no intermediate forms have been found between animal communication and human language. Here, we assess whether animal taxa produce vocal sequences that are better described by Markov chains, or by non-Markovian dynamics such as the ‘renewal process’ (RP), characterized by a strong tendency to repeat elements. We examined vocal sequences of seven taxa: Bengalese finches Lonchura striata domestica, Carolina chickadees Poecile carolinensis, free-tailed bats Tadarida brasiliensis, rock hyraxes Procavia capensis, pilot whales Globicephala macrorhynchus, killer whales Orcinus orca and orangutans Pongo spp. The vocal systems of most of these species are more consistent with a non-Markovian RP than with the Markovian models traditionally assumed. Our data suggest that non-Markovian vocal sequences may be more common than Markov sequences, which must be taken into account when evaluating alternative hypotheses for the evolution of signalling complexity, and perhaps human language origins.     

Community arts: (Re)contextualizing the narrative of teaching and learning

ABSTRACT

Education in the United States is often characterized by testing and standardized outcomes, and bears little relevance to the culture and the community that surrounds both students and teachers. Conversely, community arts connect the philosophies of art and education to the larger spheres of culture and community. The community thus becomes an educational space in which both the teachers and students are motivated to learn from each other through a reciprocal relationship that changes the dynamic of both teaching and learning. Consequently, the (re)contextualization of art and education within culture and community has distinct policy implications regarding both what we teach and the way we teach it. There is an opportunity to increase the significance of art education in a democratic society if we embrace practices that empower preservice teachers to analyze how artmaking practices shape their own sensibilities and those of the communities in which they live. This article suggests a field experience model for informing cross-cultural understandings of community-based pedagogy, participation, and collaboration that challenges existing educational policy while informing the values and beliefs of the preservice teacher. It presents the opportunity to develop socially relevant programs for use in the teaching of art that include community, social justice, democracy, collective responsibility, activism, and equity—among others—that confront established perceptions of both art and education.     

语言复杂性理论及临床应用

复杂语言结构和简单语言结构相比,哪一种更能促进语言能力提高,是语言心理研究的核心问题。近年来,国外出现大量语言复杂性的研究。本文对语言复杂性的理论、评估、原理及应用作了介绍,并对语言复杂性理论与教学理论的联系以及在应用中需要考虑的问题做了简单评述,旨在对语言学习和语言缺陷治疗提供帮助。     

Degas the Master without Emotion

This article provides a brief review of generally accepted ideas about creativity, followed by examples of music teachers teaching creatively and teaching their students to be more creative. Implications for teacher education and policy recommendations for music education are discussed     

Do You Really Want to Know? Elementary Music Personnel and Potential in Utah

This is the second of two articles reporting the results of a study by the author regarding the status of elementary music education in the state of Utah. This article focuses on the qualifications of Utah's elementary music teachers (music certified, elementary classroom certified, artists-in-residence, volunteers, and paraprofessionals) and the conditions under which they teach. Interactions among teacher qualifications and teaching status are explored. Paraprofessionals play a significant role in Utah's elementary music programs. While over 90 percent of elementary schools in the United States provide regular music instruction taught by certified music specialists, less than 10 percent of Utah's elementary population receives such instruction. Nearly half of the elementary students in the state receive no designated music instruction beyond that provided by their regular elementary classroom teacher. The influence of school funding, No Child Left Behind and other accountability measures, high-stakes testing, urban/rural populations, and leadership are highlighted. Policy considerations are discussed.     

Reflections on music teacher professional development: Teacher-generated policies and practices

Abstract

The purpose of this article is to make policy recommendations based on the authors’ experiences with, and research about, reflective, differentiated, and teacher-generated music teacher professional development (PD). By doing so, we argue for a bottom-up process that capitalizes on our music teacher and music teacher educator expertise along with the research literature in music teacher PD. We explore music teachers’ PD needs considering four career stages to explain how knowledge generated at each level informs our understanding of differentiated PD. From preservice music teachers and music teacher candidates, to in-service and veteran teachers, our discussion explores meaningful and effective ways to engage in deep, reflective thinking about the music teaching and learning process. Accordingly, we provide specific policy recommendations for music teachers at each career stage so that they might take greater ownership of their own learning, growth, and development through local, reflective, self-initiated, and differentiated PD opportunities.     

Social complexity and linguistic diversity in the Austronesian and Bantu population expansions

Reconstructing the rise and fall of social complexity in human societies through time is fundamental for understanding some of the most important transformations in human history. Phylogenetic methods based on language diversity provide a means to reconstruct pre-historic events and model the transition rates of cultural change through time. We model and compare the evolution of social complexity in Austronesian (n = 88) and Bantu (n = 89) societies, two of the world's largest language families with societies representing a wide spectrum of social complexity. Our results show that in both language families, social complexity tends to build and decline in an incremental fashion, while the Austronesian phylogeny provides evidence for additional severe demographic bottlenecks. We suggest that the greater linguistic diversity of the Austronesian language family than Bantu likely follows the different biogeographic structure of the two regions. Cultural evolution in both the Bantu and Austronesian cases was not a simple linear process, but more of a wave-like process closely tied to the demography of expanding populations and the spatial structure of the colonized regions.     

Merit Pay and the Music Teacher

Current proponents of education reform are at present seeking to fundamentally change the system of teacher compensation by eliminating the traditional single salary schedule and instituting a merit pay system that directly links teacher pay to student achievement. To date, the scholarly literature in music education has been silent on the subject of teacher compensation reform. This article reviews the political arguments and empirical evidence on teacher merit pay while considering these reforms’ potential deleterious effects on music educators. After examining the potential pitfalls of a merit pay system for music educators, I propose one possible framework for evaluating music teachers in a merit pay system.     

It's Not the Culture of Poverty, It's the Poverty of Culture: The Problem with Teacher Education

The preparation of novice teachers is dominated by psychological notions almost to the exclusion of other social science paradigms. The perspective that is least likely to be evident in teacher preparation is that of anthropology. However, prospective and novice teachers regularly and loosely use the word "culture" as an explanation for student patterns of behavior they cannot explain. This discussion focuses on the ways prospective and novice teachers construct culture simultaneously as both the problem and the answer to their struggles with students different from themseles.     

Unquiet Evolution: Consideration of a Previous Synthesis

The mathematics in school biology is investigated by means of an analysis of the questions in examination papers set over a period of time in biological subjects by the University of London Examinations Board. Throughout, the incidence of questions requiring mathematics changes but remains low, while the range of mathematics topics called upon remains both restricted and unchanging. However, the various biological examination subjects differ markedly with respect both to the changes in the incidence of such questions and to the range and frequency with which the topics are used.

Certain difficulties associated with the mathematics of school biology are identified, and biology teachers are encouraged to discuss these with their colleagues who teach mathematics.     

Spare-time Art Jobs

Music teaching and learning are socially situated activities. School-university partnerships have the potential to impact preservice teachers’ identities and level of socialization. Thus, a sociologically based belief system for establishing and maintaining school-university partnerships may provide cooperating teachers and university faculty members with purpose and direction for meeting the needs of stakeholders. This article explores the sociological and pedagogical implications of school-university partnerships and illustrates how these underpinnings function in two middle school band collaborations. Specifically, this article examines how partnerships can be viewed through three sociological perspectives, how sociological experiences might impact preservice teachers’ futures, and how policymaking endeavors could impact the strength and continuance of school-university partnerships. What we learn from existing collaborations and how stakeholders respond to this information has the potential to reshape music teaching and learning in our society.     

A View of Current Evaluative Practices in Instrumental Music Teacher Education

The purpose of this study was to examine how instrumental music educator skills are being evaluated in current undergraduate programs. While accrediting organizations mandate certain elements of these programs, they provide limited guidance on what evaluative approaches should be used. Instrumental music teacher educators in the College Music Society (n = 303) supplied data about their respective programs through an online survey. Participants reported using written and verbal feedback, self-evaluation, and rubrics most frequently. Similar evaluation processes used across program courses or experiences, such as rubrics and ePortfolios, were described by 35 percent of the music teacher educators. Most programs culminated in a semester-long student teaching period, during which preservice teachers were observed and evaluated by university supervisors three to four times. Weak correlations were indicated between some evaluative practices and music teacher educators’ expectations for program graduates’ music educator skills. Implications for music teacher education programs and suggestions for establishing evaluation policies are discussed.     

Designs Made in the Free Brush Manner

In this article, the author examines the current arts education policies in the United States through the lens of Matthew Arnold's work and prose during his time as one of Her Majesty's School Inspectors in England and Wales in the nineteenth century. Arnold argued for government funding of public school systems, setting standards of quality for teacher education, and many other issues that still affect us today. His passion for a liberal education that included everyone, reinforced by his belief in the moral and humanistic goals that could be reached through an education in the arts, helped open the public schools to the humanities that we teach today. The author provides a valuable overview of what Arnold saw, not only in the English and Welsh schools but also in the French and German approach to education. Finally, the author leaves us with a concise list of what Arnold can teach us today about arts education.     

Navigating Contradictory Communities of Practice in Learning to Teach for Social Justice

In this article, I explore the contradictions that four new teachers experienced as their commitments to social justice collide with urban school culture. Framed within Jean Lave and Etienne Wenger's (1999) theory of situated learning and development concepts of identity, practice, and relationships illustrate how teachers' ideals are challenged as socializing features of two communities of practice—the universities and schools—intersect in new teachers' development. This research contributes empirical evidence of the application of critical multicultural teacher preparation into practice, a cultural representation of how educational inequities are reproduced or disrupted in the situated contexts of urban schools, an application of Lave and Wenger's theory of Legitimate Peripheral Participation that incorporates formal and informal education across multiple activity settings, and a call for collaborative communities of practice that support teachers' situated learning in creating transformative practices.     

Paint and Paper Creations

This article investigates generalist kindergarten teachers’ academic music training based on data collected from students undertaking an undergraduate degree in preschool (kindergarten) education (students aged 4–6 years) in Greece. The study was carried out through a questionnaire survey that addressed students’ aspirations when entering the university and the real learning outcomes by the end of their studies. This article seeks to find relationships between students’ academic experiences and their level of confidence and enthusiasm to teach music in kindergarten. The findings suggest that higher education provides students with most of the learning outcomes that they anticipate. However, students lack adequate practical experiences in terms of observing lessons in real educational settings, which can significantly affect their confidence levels. Finally, the author explores some implications for higher education policy and teaching practice.     

The arts in Brazilian public schools: Analysis of an art education experience in Mato Grosso State,Brazil

This article examines the relation between official policy on art education in Brazilian basic education and what is actually taught and done in public school teaching in Mato Grosso, Brazil. Making use of interpretative analysis, I directly observed art classes in schools selected in the state of Mato Grosso. I also analyzed the laws, guidelines, parameters, and other official documents related to art education in Brazilian primary and secondary schools and compared them to the observed practices in the selected schools. Specifically in Mato Grosso, there is a gap between the theoretical guidelines of these documents and what is taught and done in public schools. Conceptions of the discipline of art education in official documents are not in line with the practices of this discipline in the researched elementary schools, a discord that may contribute to art being misunderstood as a lesser discipline. Using the results of this research, I intend to seek effective ways to discuss the arts in the curriculum of primary and secondary schools and highlight their importance in school curricula. My objective is not only that these results benefit public schools by encouraging the expansion of concrete and effective public policies for the quality and improvement of primary and secondary school education and the training of arts teachers, but also that these results will assist researchers studying arts education by showing how to extend that study beyond the academic walls.     

Teaching Genetics : The Practical Problems of Breeding Investigations

Biotechnology, microbiology, and schools, Brian Bainbridge     

Drama as physical role-play: actions and outcomes for life science lessons in South Africa

Abstract

Two volunteer BEd student teachers in their fourth year of a BEd degree at a metropolitan university in the Western Cape of South Africa designed and taught lessons to two classes of the same age and ability in grade 7 (ages 12–13), using drama role-plays (intervention) and more conventional non-drama methods (control). Lessons were observed and video-audio recorded to identify episodes critical to successful learning. Learners (pupils) in both sets of classes were tested in associated content using tests designed by the student teachers. In both cases test outcomes were in favour of drama lessons (F = .56 and .55) but were not necessarily linked to the number of positive teaching episodes. Lack of interaction between student teachers and their learners, insufficient structure to the role-plays or a tendency to over-contextualise scenarios did not seem to have hindered conceptual understanding. Findings suggest a more nuanced and progressive programme of training in using drama for teaching science would be beneficial and that subject knowledge for planning activities must be particularly sound.     

Music teachers' perceptions of high stakes teacher evaluation

Recent corporate education reform policies have replaced relatively informal systems of principal observations that had been familiar to many teachers for much of their professional careers with high-stakes teacher evaluation (HSTE) systems that now determine who is allowed to remain in the profession and who gets terminated. Many education scholars have found current teacher evaluation systems to be lacking in validity and reliability. This article examines the perspectives of music teachers working within HSTE systems through a policy lens, identifying the major challenges these systems pose for music educators and offering policy recommendations for improving the evaluation of music teachers.     

The Local and Global State of Theater Education Research and Policy

The United States and much of the world is struggling with what “education” and being “educated” mean. Daily media are replete with debates on issues ranging from gender and class rights to the ideological and practical purpose of education. Prominent among these debates are discussions about whether education should be geared toward vocational purposes and employability or toward the creation of engaged, informed, and intellectually aware citizens. In this article we problematize the role and limitations of current research on drama and theater in and as education. To do this, we first share a sampling of the current state of research in this arts area. We then articulate the role this diverse range of research methodologies and foci play in shaping national and global educational policy.