Expectancies as mediators in the differential-reward conditional discrimination performance of pigeons

In a series of within-subject experiments employing a two-choice delayed conditional discrimination task, pigeons chose correctly more often when kind of correct choice and kind of reinforcer were perfectly correlated than when uncorrelated. Correct choice behavior fell to chance levels when the correlation was reversed or when it was removed by using only one kind of reinforcer. Implications for mediation theories are discussed, with the conclusion being that, although the possibility that instrumental mediators are present in this situation cannot be dismissed, the overall pattern of results indicates that classical mediators are of principal importance in this type of task.     

Enhancement of pigeons’ conditional discrimination performance by expectancies of reinforcement and nonreinforcement

Prior work has shown that when the separate correct responses of a conditional discrimination are followed by different reinforcing outcomes, performance is enhanced relative to that obtained under the conventional, single-reinforcer procedure. Four experiments with pigeons yielded the analogous finding when the different outcomes were reinforcement and explicit nonreinforcement. Controls indicated that the results could not be attributed to the effects of intermittent reinforcement, to possible differences in cue duration, or to a variety of potential sources of conditioned reinforcement. An interpretation in terms of expectancy learning is proposed.     

If You Build It and They Still Don't Come: Effective versus Successful Alternative Teacher Preparation

The continuing shortage of special education teachers, combined with increased ideological critiques of teacher education programs, has spurred the growth of alternative models of teacher preparation. Only recently have professional standards for alternative models been proposed. This paper summarizes two years of a program based on professional standards. External influences, internal design, and implementation elements are presented. Results suggest that there is value in distinguishing between the effectiveness of alternative programs and their success.     

Library service delivery via hand-held computers--the right information at the point of care

Today's health and medical librarians are well aware of the move towards evidence-based clinical practice which has emerged during the past decade. Hand-in-hand with this trend is the need for health practitioners to have access to the best possible evidence to help them in their clinical decision making. Libraries have a key role in the provision of information to their clients, and this means keeping abreast, not only of the various information sources available, but also the means by which those sources may be used. This paper will examine the effects that the hand-held computer is having on the work practices of our clients-library users. It is hoped that the paper will give an insight into the various types of library material which are suitable for use with hand-held devices, and an understanding of their advantages and limitations.     

Scaffolding 5-year-old children in Japanese kindergarten collaboratively retelling a tale

This study reports an analysis of how children in a Japanese kindergarten are scaffolded when facing the challenge of collaboratively retelling a kitsune story they have been told. What is referred to as a kitsune story is an example of a trickster tale with foxes as anthropomorphised animals. The participants were ten 5-year-old children and their teacher. Told a story by their teacher, the children were asked later to collaboratively retell it. How this retelling activity is supported – theorised in terms of the metaphor of scaffolding – is analysed on the basis of recordings. The findings show the nature of this evolving process. The conclusion is that the metaphor of scaffolding may require some contextual specification to remain a functional conceptual – and in extension, pedagogical – tool in activities fundamentally different from the activity studied in Wood, Bruner and Ross’ founding 1976 study.     

A Model for Supervising School Counseling Students Without Teaching Experience

Changed demographics of those now entering the field of school counseling argue for changes in preparatory curriculum, including the curriculum for supervision. The authors present a 5‐component model for supervising graduate students without previous school experience that is based on 2 pertinent studies. This model focuses on information for administrators and site supervisors about research related to nonteachers; immersion in the school context and in other youth‐oriented venues; observation of school culture; structure for site supervision; and awareness regarding development, classroom skills, and lesson planning. Included are sample strategies for addressing the needs of nonteachers through program structure, curriculum, and site supervision.     

Measurement of teacher performance: A study in instrument development

The procedures used to produce a research-based teaching evaluation system, containing low-inference indicators of effective and ineffective teacher behavior, included instrument development, content validation, and field testing. An extensive reliability study produced estimates for three types of consistency: intercoder agreement (r = 0.85), stability across teaching situations r = 0.86, and discriminant reliability among teachers (r = 0.79). The norming component of the study conducted in 45 schools, generated over 1200 observations of current teacher practice at all grade levels and in various subject areas. The results indicated the substantially generic nature of these behaviors; only grade level and instructional method (interactive, lecture, and independent seatwork) produced meaningful differences among groups of teachers. In addition, the average teacher used most of the effective behaviors (70%), and a few of the ineffective behaviors (8%) during observation. These results support the instrument's value in teacher training, remediation, and evaluation.