Solving Bernstein's Problem: A Proposal for the Development of Coordinated Movement by Selection

In recent years, many established concepts in the theory of human motor development have undergone profound change, and our knowledge has increased greatly. Nevertheless, some outstanding problems remain unsolved. A central problem concerns the redundancy of effective movements, first pointed out by N. A. Bernstein. The human motor system is mechanically complex and can make use of large number of degrees of freedom. The controlled operation of such a system requires a reduction of mechanical redundancy, effectively by reducing the number of degrees of freedom. More recent work has shown that this problem is hard to solve explicitly by computing solutions to the equations of motion of the system. Equally challenging to traditional computational approaches is the fact the motor systems show remarkable adaptability and flexibility in the presence of changing biomechanical properties of motor organs during development and when faced with different environmental conditions or tasks. Solutions to these problems would have a large impact on a variety of issues in child development. In this article, we stress the importance of the somatic selection of neuronal groups in maps for the progressive transformation of a primary movement repertoire into a set of motor synergies and adaptive action patterns. We present results from computer simulations of a simple motor system that works according to such selectional principles. This approach suggests a provisional solution to Bernstein's problem and provides new parameters to guide experimental approaches to the development of sensorimotor coordination.     

Measuring the value of theatre for Tyneside audiences

What values do theatre and dance hold for audience members? And how do these values differ between subsidised, amateur, and commercial performance? This paper addresses these questions through a survey of over 1800 spectators for theatre and dance in Tyneside in northeastern England, as well as a parallel set of focus groups, in the spring of 2014. These methods, which are designed for comprehensiveness and comparability, are being used across Europe by the Project on European Theatre Systems, a working group of theatre sociologists. Our research showed two sets of values which performances achieved; one was a common measure of performance quality, while the other described the values particular to subsidised work. This allows us to articulate both the general value of the arts and the particular values which subsidy (attempts to) facilitate. This has implications for both understandings of cultural value and for cultural policy, as the distinction between the two groups was not clean. We also found that amateur theatre participated in the same value system, but with an increased emphasis on loyalty and community cohesion. The paper concludes a methodological reflection on the use of quantitative methods in theatre studies.     

Yoga for seniors: understanding their beliefs and barriers to participation

ABSTRACT

Yoga has been found to provide numerous health benefits to older adults including preventing or slowing physical frailty and subsequent functional limitations. The purpose of this study was to examine pre-frail or frail older adults’ beliefs about yoga as well as to identify barriers to participation. We recruited 37 older adults from a Faint, Fall, and Frailty Clinic at a medical center and asked them to complete questionnaires regarding their physical health and beliefs about yoga using the Beliefs About Yoga Scale. Frailty and fall risk were obtained through electronic health records. Participants’ had mean age of 72.81 years. Participants were considered to be prefrail (66.7%) or frail (33.3%), and most (78.4%) had fallen at least once in the past year. Over 72% of participants engaged in light physical activity. The BAYS mean score was 59.17 (SD = 12.5; Range 11–77). Higher scores indicted more optimistic beliefs about yoga. Over 90% of participants had not practiced yoga, 97.1% had no intentions to practice, 61.8% did not know locations placed where yoga classes were offered, 82.4% were unsure about the costs associated with yoga, and only 56.3% reported having transportation. The three primary barriers to practicing yoga were perceived difficulty of yoga practice, lack of motivation, and fear of injury. Participants held positive beliefs about yoga, yet had limited experience and little intention to participate indicating a need to provide targeted educational interventions to this population of older adults.     

Literature Circles: Reducing Reading Stress

The concept of literature circles is now familiar in American and Australian literature about reading, but it does not as yet have great currency in this country. This article by Charlotte Keefe may do much to change this as it very lucidly explains the benefits of and teaching strategies underlying the use of literature circles. As Charlotte points out, they may do much to alleviate those of children's problems with reading which stem from not seeing the point and deriving little pleasure from the experience.     

The Practicum in Study of Student Development: Its Relation to Counselor Preparation

This paper identifies several kinds of counselor activity for which practicum experiences have been or are being designed. These include individual and group counseling, outreach consultation, supervision of practicum students, and the study of student development. The SSD practicum is seen as sensitizing and predisposing the personnel worker to view action research as a relevant and crucial part of counselor education.     

Do actions speak louder than words? An effect of the functional use of language on dominant sex role behavior in boys and girls

Although a number of studies document the fact that adult males interrupt females more often than females interrupt males, less is known about whether this behavior is also true of younger boys and girls. This study examined some aspects of dominant-submissive sex role behavior in preschool children and their teachers during conversation at the snack table. It asked whether there was any difference in the number of times girls and boys interrupted their teacher, and whether there was any difference in the number of times the teacher interrupted boys or girls. In succeeding observations, researchers investigated whether girls or boys were assigned the privilege of passing snack more frequently.In Investigation 1 nine boys and nine girls, 4 years of age, were observed talking with a variety of student teachers in a naturalistic snack setting, and checklists were kept of the number of teacher-child, child-teacher interruptions during conversation. In Investigation 2, tallies were kept of the number of times boys and girls assumed the dominant roles of distributing snacks and snack materials.Results indicted that during conversation, boys interrupted their teachers more frequently than the girls did (p > .03). Teachers interrupted girls more frequently than they interrupted boys (p > .02). No significant differences were found in the frequency of participation by boys or girls in passing snack. Results are discussed in relation to the teacher's role in teaching dominant-submissive sex role behaviors to children.     

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