Presents fourth editorial in series, this one describing research design and explaining its relationship to statistical design. Research design, validity, and research approaches are examined, quantitative research designs and hypothesis testing are described, and control and statistical designs are discussed. Concludes with section on the art of…

This article started as a debate between the two authors. Both authors present a series of propositions about quality standards in education research. Cook's propositions, as might be expected, not only concern the importance of experimental trials for establishing the security of causal evidence, but also include some important practical and…

Debates the value of experimentation as a tool in educational research. (MK)

Argues that evaluations of games are often inadequate due to poor experimental design. In order to correct this flaw, particular attention must be given to controlling the confounding variables and obtaining equivalent treatment groups. References are included. (LLS)

Questions traditional approach to validating employment interview. Notes that individuals are likely to differ in ability to accurately predict employee behavior and that interviewers often differ in their constant tendency to make favorable or unfavorable ratings. Researchers, by failing to consider these tendencies, may inappropriately collapse…

There are two significant problems in using functional neuroimaging methods to study language. Improving the state of functional brain imaging will depend on understanding how the dependent measure of brain imaging differs from behavioral dependent measures (the ''dependent measure problem'') and how the activation of the motor system may be…

In this response, I advocate for the value of considering theory in the design-based research that Gersten describes in Behind the Scenes of an Intervention Research Study. I argue that such an emphasis: is consistent with the literature on design experiments, is integral to advancing knowledge building within domains, serves to advance the work…

We highlight major themes emerging from the articles in this special issue. These themes include (a) the importance of theoretical frameworks and clearly defined constructs for guiding the development of interventions, (b) a consideration of intervention effects on ethnic minority children, (c) the importance of positive social interactions and…

This article addresses the perennial issue of the criteria by which qualitative research should be evaluated. At the present time, there is a sharp conflict between demands for explicit criteria, for example in order to serve systematic reviewing and evidence-based practice, and arguments on the part of some qualitative researchers that such…

Investigated is the topic of research implementation and how it can affect evaluation results. Even when evaluations are well planned, the obtained results can be misleading if the conscientiously-constructed research plan is not correctly implemented in practice. In virtually every research arena, one finds major difficulties in implementing the…

Reviews research on teaching and makes an appeal for involving classroom teachers as field workers and partners in applied pedagogical research. Covers difficulties involved with such an approach, the need for replication, teacher training and the problem of generalization. (JDH)

Raises and attempts to resolve some significant and controversial issues in the design of family therapy outcome studies. Addresses the issue of clinical relevance and critiques intermodel comparative outcome studies. Discusses outcome criteria, with a recommendation for determining whether or not a family therapy has had a desirable effect. (BH)

The current literature is replete with instances of imprecise and conflicting usage of "qualitative" and "quantitative" evaluation. This paper presents a framework for making distinctions among several related concepts to eliminate this potential source of confusion. In the process, the terms "qualitative" and…

To rule out threats to internal validity, proposes a control group design in which control group subjects are given an alternate treatment that they perceive as equally desirable to and that is similar in duration and procedures to the experimental treatment but that is concerned with dependent variables unrelated to the experimental treatment.…

The fervent debate over the last 100 years about quantitative and qualitative research paradigms has resulted in a great divide between quantitative and qualitative researchers, who often view themselves as in competition with each other. This polarization has promoted "uni-researchers," researchers who restrict themselves exclusively to either…