What makes it a heap?

On the epistemic view of vagueness, a vague expression has sharp boundaries whose location speakers of the language cannot recognize. The paper argues that one of the deepest sources of resistance to the epistemic view is the idea that all truths are cognitively accessible from truths in a language for natural science, conceived as precise, in a sense explained. The implications of the epistemic view for issues about the relations between vague predicates and scientific predicates are investigated.     

Programmed instruction: What it is and how to do it

Five behaviorological features of programmed instruction are outlined: behavioral objectives, reinforcement, activity rate: high and relevant, successive approximation, and mastery progression. Each of these topics is explained, and examples are given to illustrate the differences between programmed instruction and the more common transmission model of teaching. A final section provides suggestions on specific techniques of successive approximation.     

Direct instruction: What it is and what it is becoming

This essay describes the principles of Direct Instruction design and delivery used to establish clear, unambiguous communication and maximize student responding. Direct Instruction research findings are summarized: achievement of low-income students in Follow Through, longitudinal results, and the effectiveness of Direct Instruction for students with handicaps. Finally, new directions for Direct Instruction, technological applications and instruction of higher-order skills, are discussed.     

What it means to be general cultural

Published and unpublished research with the Vocational Interest Inventory based on Anne Roe's interest scheme supported separating the General Cultural area out of the RIASEC framework. It emerged as a distinct fusion of certain verbal-artistic and social tendencies, and, as an occupational group, takes social scientists away from Roe's Science group. General Cultural provides a bridge in career counseling between interests and cognitive variables because of the repeated association of CUL scores with academic achievement and persistence.     

What it takes to defend deceptive placebo use

A complete defense of deceptive placebo use must address this ethical objection: deceptive placebo use violates patient autonomy, because deceiving a patient about the placebo nature of a proposed treatment prevents her from giving informed consent to the treatment. Unfortunately, this objection isn't always recognized and clearly disambiguated from other ethical concerns. I consider how well several bioethicists who write about placebo use have responded to, or evaded, this objection. I conclude that defenders of deceptive placebo use should, following the lead of Onora O'Neill, argue that deceptive placebo use is compatible with informed consent.     

Worker Well-Being: What it Is,and how it Should Be Measured

Applied Research in Quality of Life - Worker well-being is a hot topic in organizations, consultancy and academia. However, too often, the buzz about worker well-being, enthusiasm for new programs...     

What time reversal invariance is and why it matters

David Albert's Time and Chance (2000) provides a fresh and interesting perspective on the problem of the direction of time. Unfortunately, the book opens with a highly non-standard exposition of time reversal invariance that distorts the subsequent discussion. The present article not only has the remedial goal of setting the record straight about the meaning of time reversal invariance, but it also aims to show how the niceties of this symmetry concept matter to the problem of the direction of time and to related foundation issues in physics.     

Wepman test of auditory discrimination: What does it discriminate

This study investigated auditory discrimination as a function of ethnic group membership within the same socioeconomic status (SES). Subjects were 126 randomly selected six-year-old students attending schools in the lower SES community of southeast San Diego. Only students with no known speech or hearing defects and of normal intelligence were included. They were assigned to one of three categories: Black, Chicano, or Anglo.Subjects were administered four tests in a counterbalanced design: the Wepman, the Gross, and the Ott. The latter two were developed for use with Black dialect and Spanish-speaking youngsters, respectively. The ANOVA results indicated a reliable difference between the main effects of the groups (F=40.34,p<.001) and tests (F=72.82, p<.001), with a significant interaction between tests and groups (F=44.91, p<.001). Interaction effects were evaluated with the Dunn theorem. Significant differences were found among Anglo, Black, and Chicano students on the discrimination list for Spanish sounds (Ott) and a significant Anglo/Black difference on the discrimination test for Black dialect (Gross). Contrary to previous findings, there were no differences between the groups on the Wepman Test of Auditory Discrimination (WTAD). However, there are significant differences between groups on separate items of this test.