Examines current practices in mass communication research with respect to message experiment design, analysis, and interference. Provides a logically consistent framework for mass communication researchers to make experimental design and data analysis decisions. (PRA)

Argues not only that critical and traditional social scientific theory have different moral stances but also that they take different approaches to generating knowledge claims. (SR)

Because of the importance of single-subject studies in mental retardation research, a meta-analysis of the literature examining interrater agreement for visual analysis of single-subject data was conducted. Analysis revealed an overall itinerant agreement value of 0.58 for 14 studies representing 789 raters. Effects of data type, design type,…

Argues that the concept of subjective theory and the corresponding methodology have considerable potential for second-language research in terms of building adequate models of second-language learning, teaching, and production; developing adequate methodology to analyze the mental processes underlying second-language learning, teaching, and…

Problems in selection of optimal designs in item-response theory (IRT) models are resolved through a sequential design procedure that is a modification of the D-optimality procedure proposed by Wynn (1970). This algorithm leads to consistent estimates, and the errors in selecting the abilities generally do not greatly affect optimality. (SLD)

Provides advice on conducting focus-group research in institutions of higher learning based on experiences with groups of university business-school students. Lists and discusses steps in focus group research, including determining research questions, determining sampling frames, selecting moderators, developing a discussion guide, recruiting…

Suggests two complementary frameworks for providing validity evidence for rating data. One conceptualizes raters as data collection instruments that should be subject to traditional procedures for establishing validity evidence; the other evaluates studies using raters from an experimental design perspective allowing the assessment of the study's…

Provides a dialog about the evolution of qualitative research methodology and examines where it is headed in light of where it has been. Describes different phases in the development of qualitative research and briefly considers how qualitative research contributes to an understanding of educational phenomena and process. Suggests why such…

Proposes the subsuming theory criterion for experiments on common ground in mutual knowledge (i.e., the design must keep common information constant and only vary whether or not it is common). Demonstrates how doing so makes stronger claims. Illustrates how experiments can be designed to satisfy the criterion by evaluating some earlier studies…

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.…

Examines the failure of counselor education to adequately train counselors in research methodology, generally, and practice-relevant methods, specifically. Proposes that single-case designs offer a scientifically credible means to objectively evaluate practice and conduct clinically relevant research in practice settings. Presents a 7-component…

This study examined the representativeness of a time-sampling observational procedure to evaluate students with behavior disorders by examining error in samples of varying size in comparison to a criterion measure. Analyses of both single subject and multiple subject designs suggested that samples of 16 to 20 observational sessions of eight-minute…

Presents a conceptual model of relationships among variables to guide the design of research in technology-mediated learning environments based on sociocultural and constructivist principles, for framing questions and for generating hypotheses about the social dimensions of learning developments with influences from the cultural context. (Contains…

Simulations demonstrate the effects of correlated errors on the person-by-occasion design in which the confounding effect of equal time intervals results in correlated error terms in the linear model. Two specific error correlation structures were examined. Conditions under which underestimation and overestimation occur are discussed. (SLD)

The authors (Ingham et al.) of the original report respond to criticisms by Kalinowski et al. that they misinterpreted their data in a study of the effects of frequency-altered feedback on stuttering in four single-subject design investigations. They also address larger issues concerning altered auditory feedback procedures. (DB)