In The Political Limits of Environmental Regulation: Tracking the Unicorn, Bruce Yandle identifies some of the key weaknesses of federal environmental regulation, including its regressive effects, its tendency to better serve selected political interests than the cause of environmental protection, and the EPA's failure to follow sensible priorities. Additional problems may also be cited, including the tendency to exclude citizens? voices from deliberations regarding the degree of pollution control. But Yandle's conclusion regarding the likely superiority of decentralized and market?sensitive alternatives (...) to centralized regulation is overstated. Any such alternatives necessarily will continue to be grounded in relatively uniform national standards. Moreover, in the context of American political economy, market?based controls would continue to deny many citizens real voice and choice. The quest continues to be for the combination of controls that best preserves both the environment and liberty. (shrink)

This first retrospective following Grant's death examines the significance of his major work, Lament For a Nation. The essays by philosophers, artists, theologians, political scientists and Canadian nationalists assess the impact of this important Canadian's work, and the intellectual legacy he has left behind.

Six characteristics of effective representational systems for conceptual learning in complex domains have been identified. Such representations should: (1) integrate levels of abstraction; (2) combine globally homogeneous with locally heterogeneous representation of concepts; (3) integrate alternative perspectives of the domain; (4) support malleable manipulation of expressions; (5) possess compact procedures; and (6) have uniform procedures. The characteristics were discovered by analysing and evaluating a novel diagrammatic representation that has been invented to support students' comprehension of electricity—AVOW diagrams (Amps, Volts, Ohms, (...) Watts). A task analysis is presented that demonstrates that problem solving using a conventional algebraic approach demands more effort than AVOW diagrams. In an experiment comparing two groups of learners using the alternative approaches, the group using AVOW diagrams learned more than the group using equations and were better able to solve complex transfer problems and questions involving multiple constraints. Analysis of verbal protocols and work scratchings showed that the AVOW diagram group, in contrast to the equations group, acquired a coherently organised network of concepts, learnt effective problem solving procedures, and experienced more positive learning events. The six principles of effective representations were proposed on the basis of these findings. AVOW diagrams are Law Encoding Diagrams, a general class of representations that have been shown to support learning in other scientific domains. (shrink)

Truth diagrams are introduced as a novel graphical representation for propositional logic. To demonstrate their epistemic efficacy a set of 28 concepts are proposed that any comprehensive representation for PL should encompass. TDs address all the criteria whereas seven other existing representations for PL only provide partial coverage. These existing representations are: the linear formula notation, truth tables, a PL specific interpretation of Venn Diagrams, Frege’s conceptual notation, diagrams from Wittgenstein’s Tractatus, Pierce’s alpha graphs and Gardner’s shuttle diagrams. The comparison (...) of the representations succeeds in distinguishing ideas that are fundamental to PL from features of common PL representations that are somewhat arbitrary. (shrink)

Psychologists' emerging interest in spirituality and religion as well as the relevance of each phenomenon to issues of psychological importance requires an understanding of the fundamental characteristics of each construct. On the basis of both historical considerations and a limited but growing empirical literature, we caution against viewing spirituality and religiousness as incompatible and suggest that the common tendency to polarize the terms simply as individual vs. institutional or ′good′ vs. ′bad′ is not fruitful for future research. Also cautioning against (...) the use of restrictive, narrow definitions or overly broad definitions that can rob either construct of its distinctive characteristics, we propose a set of criteria that recognizes the constructs' conceptual similarities and dissimilarities. Rather than trying to force new and likely unsuccessful definitions, we offer these criteria as benchmarks for judging the value of existing definitions. (shrink)

Increasingly, clinical research is evaluated on the quality of its statistical analysis. Traditionally, statistical analyses in clinical research have been carried out from a ‘frequentist’ perspective. The presence of an alternative paradigm – the Bayesian paradigm – has been relatively unknown in clinical research until recently. There is currently a growing interest in the use of Bayesian statistics in health care research. This is due both to a growing realization of the limitations of frequentist methods and to the ability of (...) Bayesian methods explicitly to incorporate prior expert knowledge and belief into the analyses. This is in contrast to frequentist methods, where prior experience and beliefs tend to be incorporated into the analyses in an ad hoc fashion. This paper outlines the frequentist and Bayesian paradigms. Acute myocardial infarction mortality data are then analysed from both a Bayesian and a frequentist perspective. In some analyses, the two methods are seen to produce comparable results; in others, they produce different results. It is noted that in this example, there are clinically relevant questions that are more easily addressed from a Bayesian perspective. Finally, areas in clinical research where Bayesian ideas are increasingly common are highlighted. (shrink)

Theological schools are well situated to create intentional cultures for the purpose of spiritual formation. Indeed, most schools of theology have this goal as an essential part of their mission as well as a requirement for continued accreditation. And yet, the measurement of spiritual formation over time is fraught with challenges. This article seeks to address some of these challenges by means of developing a meta-theory of positive change/growth which would eventually serve as a theoretical basis for the development of (...) a generalizable and reliable measurement tool. (shrink)

When Christians worship God, their cultic activities display, in widely varying combinations, attitudes of fear, respect, love, trust, awe, deference and obedience. They worship the Lord with all their heart, soul and strength, confessing their own insignificance in comparison to God, yet expressing confidence in the divine mercy which they believe will assist them through the trials of this life, toward a joyful existence beyond the grave. In the liturgical churches, the dominating mood varies according to the tables of feasts (...) and fasts: Christmas and Easter are times for joyful song, brightly coloured vestments and festive activities. Ash Wednesday and Good Friday are days of penitence, sorrow and sombre hymnody. Throughout the year, the houses of worship are places of bowed heads and lowered voices, of respect and sobriety, and sometimes of veneration for icons and the objects used in worship. The inventory of revered objects varies considerably, as do the activities thought to be appropriate in this connection, ranging from the Low Protestant's respectful handling of the Bible to the High Churchman's prostration before the Monstrance, in the Benediction of the Holy Sacrament. But it is clear that divine worship normally involves reverence and awe and that it usually involves some form of self-abasement. (shrink)