We have recently argued that unconscious numerical stimuli might activate responses by a match with prespecified action trigger codes (action trigger account) rather than by semantic prime processing (elaborate processing account). [Van Opstal, F., Reynvoet, B., and Verguts, T. (2005). How to trigger elaborate processing? A comment on Kunde,…

In the popular media, American cultural, educational, and political life is portrayed as ideologically split down the middle. The split is often framed in terms of opposites by using the ideas and labels addressed by the author in this paper--traditional versus nontraditional, experiment versus the status quo, diversity versus homogeneity, change…

It is well established that thought experiments are both scientifically and philosophically significant, and even that they are pedagogically significant. However, the basis and methodology for their pedagogical use is not as well established. Pedagogical thought experiments are defined as mental simulations with special features to isolate…

The state of the art of randomized social field experiments is discussed. Topics discussed include disciplines of primary actors involved in such research, scientific value of experimentation, the nation's capacity to conduct field experiments, and society's willingness to permit such experiments. (TJH)

Examines the experimental program initiated by Albert Michelson at the end of the nineteenth century through a literary analysis of its reception. Provides various interpretations of the failed experiments by science commentators over a period of decades. (HB)

Examines recent developments in Nancy Cartwright's philosophy of science against the background of her earlier ideas. Argues that Cartwright's views fall within the broad empiricist tradition. Contains 19 references. (Author/WRM)

Discusses the effects of expectancy on learning in a life science instructional laboratory exercise. Contends that prior knowledge directs the act of observing. Investigates the role of prior conceptions on secondary school students' ability to observe scientific phenomena. (Contains 30 references.) (YDS)

Suggests that the appropriateness of a methodology for the study of adult literacy programs be determined by assessing the extent to which the methodology speaks to the information needs and context complexity involved. (JOW)

Explains the qualities of a good laboratory experiment. (YDS)

The author proposes a design for science instruction in the middle school years, ages 9-13. (SJL)

This poem, with stanzas in limerick form, refers humorously to the many threats to validity posed by problems in research design, including problems of sample selection, data collection, and data analysis. (SLD)

Identifies the development of practical and investigative skills featured in science qualifications at all levels (foundation, intermediate, and advanced) and all types (general, general vocational, and occupationally specific). Reviews the debate over the purpose of practical experimental work in science education and training. (Author/CCM)

Philosophers' attempts to convincingly explicate the received view of an ad hoc hypothesis--that it accounts for only the observations it was designed to account for--have been unsuccessful. Familiar and firmer criteria for evaluating the hypotheses or modified theories so classified are characteristically available. Contains 41 references.…

Computer programs and models are used to express respect for life by not sacrificing any animal but these alternatives might be deeply flawed. Alternatives to dissection are perverse alternatives that tend to preserve the features of inappropriate dissections like destructiveness, reductionism and objectification.

The problem with organic chemistry labs is that the educational objectives of lab instructions are often vague and seldom stated. The great majority of organic chemistry labs in American colleges and universities are based on verification experiments.