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)

Suggests research designs and methodologies that are useful in program evaluation when information is hard to measure, or sensitive in nature, or difficult for the respondent to articulate. Illustrates the application of these methods, which include intersubjective certifiability and triangulated respondent groups among other approaches, through…

Derives benefit-cost rations for 14 disability cohorts served by the Vocational Rehabilitation Program. Estimates earnings impacts in a quasiexperimental framework using an internal comparison group. Earnings data are from a panel constructed by linking data from the Rehabilitative Services Administration with data from the Social Security…

Examination of methodological issues in the design and interpretation of studies on the genetics of reading disability suggests three tests of increasing rigor for determining whether reading score distributions are categorical and thus not subject to analyses which assume a continuous normal distribution. Also noted are interactive relationships…

Objective: To consider the research design requirements needed to provide a rigorous test of environmental mediation hypotheses and to summarize the main findings from research using such designs. Method: Selective review of empirical evidence dealing with psychopathology. Results: There is robust evidence of environmentally mediated risks for…

An experimental research design was used to examine the effectiveness of a targeted, long-term intervention to promote school completion and reduce dropout among urban high school students with emotional or behavioral disabilities. African American (67%) males (82%) composed a large portion of the sample. This intervention study was a replication…

More than three-fourths of older adults with developmental disabilities and mental illness live in the community with aging parents, the majority of whom do not complete plans for the residential, financial, and legal future of their offspring. The authors used a true experimental design to evaluate the effectiveness of a six-week…

To determine the extent to which published randomized controlled trials (RCTs) of psychotherapy can be generalized to a sample of outpatients, the authors matched information obtained from charts of patients who had been screened out of RCTs to inclusion and exclusion criteria from published RCT studies. Most of the patients in the sample who had…