Portfolio assessment in a collaborative program evaluation: the reliability and validity of a family literacy portfolio

Evaluations increasingly use open-ended assessments, such as portfolios, to gather information about program impact. Portfolios, however, present challenges in achieving acceptable levels of reliability and often lack evidence to support validity. This article describes the components of a portfolio assessment system developed in a collaborative evaluation of a family literacy program. Staff of a family literacy program and two evaluators collaborated to develop the assessment and the tools that frame the review of the portfolios. Rubrics, exemplar portfolios, portfolio logs, and lists of ‘look-fors’ were developed to guide raters in the scoring and to improve the reliability of scores and validity of decisions about the program. Inter-rater reliability for the portfolio assessment was 0.79 for holistic scores and 0.74 for analytic scores. With respect to validity, holistic and analytic scores correlated with criterion measures from 0.50 to 0.59, providing initial evidence of a common construct.     

The positive science of ethics in France: German influences onDe la division du travail social

What was Durkheim doing—in the sense of an intended social action—in writing De la Division du travail social? At least a part of the answer is that Durkheim's project was linguistic—i.e., he was attempting to replace an outworn vocabulary of Cartesian metaphysics with a more Germanic lexicon—one in which simplicity gave way to complexity, the abstract to the concrete, the ideal to the real, deduction to induction, rationalism to empiricism, and so on. To some extent, this was motivated by the superiority—widely acknowledged among intellectuals of the Third Republic—of German science and Protestant scientific education. But an additional motivation was Durkheim's belief that only a real, concrete entity—society as a “thing” (chose)—could provide an object worthy of the veneration of the “new man” of the Republic. Durkheim's attempt to construct a science of social facts was therefore itself subsidiary to another, “higher” purpose—i.e., the construction of a moral authority (real, concrete, complex) adequate to the needs of the Third French Republic. Rather than an end in itself, Durkheim's sociology should thus be seen as a means to other ends—i.e., the “construction” of a particular kind of “fact”—within a specific social and historical context.     

INCOMPLETE OWNERSHIP, RENT DISSIPATION, AND THE RETURN TO RELATED INVESTMENTS

The welfare loss from free access resource use is examined in a general equilibrium model. Actions that intensify competition for the resource, either by lowering the private cost or raising the private benefit of using it, can raise this loss above the rent the resource would earn if owned. Such 'excess dissipation'is illustrated with examples applicable to unowned groundwater. Regulatory policies that fix inputs needed to acquire the resource work by transferring part of the resource's rent to controlled inputs. The resulting welfare effect depends on the elasticity of substitution between, and relative prices of, controlled and uncontrolled inputs.     

Some perspectives on statistical computing

The author argues for an increased emphasis on computing in the training of statisticians and in their professional practice. He describes some of the current technological challenges and demonstrates the importance for statisticians of becoming more active in computational aspects of their work and specifically in producing software for carrying out statistical procedures. Such a reorientation will require substantial changes in thinking, pedagogy and infrastructure; the author mentions some of the conditions required to achieve these goals.     

Aggressive Behaviors in Social Interaction and Developmental Adaptation: A Narrative Analysis of Interpersonal Conflicts During Early Adolescence

Using conflict narratives reported by adolescents in grade 7 (mean age = 13.4 years), this study investigated the interactional properties and developmental functions of four types of aggressive behaviors: social aggression, direct relational aggression, physical aggression, and verbal aggression. A total of 475 participants from the Carolina Longitudinal Study ( Cairns & Cairns, 1994 ) were included. Results showed that the majority of conflict interactions involved more than a dyad. The use of social aggression (e.g., concealed social attack) was associated with more individuals involved in the conflict. Social aggression was primarily reported as an initiating behavior for interpersonal conflicts, while direct relational aggression was a responding behavior. Medium to high levels of reciprocity were found for physical, verbal, and direct relational aggression, whereas a low level of reciprocity was reported for social aggression. School authorities were most likely to intervene in physical aggression. The use of social aggression was associated with higher network centrality among adolescents. Developmental maladjustment in late adolescence and early adulthood was primarily predicted by physical aggression.     

Vector quantization: clustering and classification trees

An image that is mapped into a bit stream suitable for communication over or storage in a digital medium is said to have been compressed. Using tree-structured vector quantizers (TSVQs) is an approach to image compression in which clustering algorithms are combined with ideas from tree-structured classification to provide code books that can be searched quickly and simply. The overall goal is to optimize the quality of the compressed image subject to a constraint on the communication or storage capacity, i.e. on the allowed bit rate. General goals of image compression and vector quantization are summarized in this paper. There is discussion of methods for code book design, particularly the generalized Lloyd algorithm for clustering, and methods for splitting and pruning that have been extended from the design of classification trees to TSVQs. The resulting codes, called pruned TSVQs, are of variable rate, and yield lower distortion than fixed-rate, full-search vector quantizers for a given average bit rate. They have simple encoders and a natural successive approximation (progressive) property. Applications of pruned TSVQs are discussed, particularly compressing computerized tomography images. In this work, the key issue is not merely the subjective attractiveness of the compressed image but rather whether the diagnostic accuracy is adversely aflected by compression. In recent work, TSVQs have been combined with other types of image processing, including segmentation and enhancement. The relationship between vector quantizer performance and the size of the training sequence used to design the code and other asymptotic properties of the codes are discussed.     

Talcott Parsons and the Integration of Economic and Sociological Theory

Parsons'theory of economy and society has reemerged as an important reference point in the development of social theory. This paper focuses on Parsons'contribution to a possible theoretical rapproachment between economic and social theory. The issue addressed is the indifference of economists to the project for theoretical reunification announced in the Marshall Lectures. The author argues that Parsons'understanding of economic theory was seriously incomplete, while his assumption of a shared commitment between the two disciplines to develop a general synthetic theory was highly dubious. At the same time, Parsons'attempt at rapproachment remains relevant in a contemporary situation where many social scientists propose an economistic annexation of sociology by rational choice theory.     

Emotional displays in children's television programming

The facial expressions of emotion and the circumstances under which the expressions occurred in a sample of the most popular children's television programs were investigated in this study. Fifteen-second randomly selected intervals from episodes of five television programs were analyzed for displays of happiness, sadness, anger, fear, disgust, and surprise. In addition, the contexts in which the emotions occurred were examined. Results indicated that particular emotional expressions occurred at significantly different frequencies and that there was an association between emotional displays and emotion-contexts. The high rate of emotional displays found in television shows has implications for the development of knowledge regarding emotional display rules in viewers.We are grateful to Sharon Galligan for assistance in coding part of the data and to Carolyn Saarni and Amy Halberstadt for helpful comments on an earlier draft of this paper. This research was supported in part by a grant from the National Institute of Disabilities and Rehabilitation Research, #GOO85351. The opinions expressed herein do not necessarily reflect the position or policy of the U.S. Department of Education.     

Consumers as targets: Autonomy,accountability, and anticipation of the influence process

Given their limited financial resources, shoppers generally appreciate the practical necessities of resisting sales pitches and other promotional activities destined to entice them into inopportune purchases. At the same time, ventures into the marketplace represent practical necessities for nearly everyone as well as significant forms of entertainment (Prus and Dawson, 1991; Prus, 1993) for a great many people. This generates a series of interactional dilemmas for almost everyone in western society as they attempt to pursue their interests in conjunction with the salespeople they encounter. Building on data from a larger study of consumer practices, this paper considers the ways in which buyers attempt to maintain control over the lines of action they develop in potential purchasing contexts. In particular, attention is given to the ways in which people manage intimacy and distancing in shopping contexts by focusing on (a) people’s preferences for self-serve versus service settings and (b) shoppers anticipations as targets of the influence process.