Conceptual and methodological guidelines for voice therapy research are presented, and suggestions are offered for selecting experimental designs. Divergent terminology, philosophy, and issues of voice therapy are examined to serve as an overview and as a basis for research direction. (Author/DLS)

A Monte Carlo technique was used to investigate the effect of the differences in covariate means among treatment groups on the significance level and the power of the F-test of the analysis of covariance. (Author/GDC)

Discussion of conceptual and methodological aspects of reading intervention research focuses on nine specific design limitations of previous intervention research; ways to measure and analyze change as a function of development, treatment intervention and ecological influences; assumptions of individual growth models; and advantages, conditions,…

Multi-element research designs (alternating treatments or simultaneous treatments) are capable of revealing when sequence effects operate, but even more valuably, they can be used to assess the effects of potential multiple treatment interference and to study contextual interactions other than sequence effects. (JDD)

Challenges many of the specific ideas and actions discussed in J. Myers's "The Social Contexts of School and Personal Literacy," published in this journal (volume 27, pages 297-333). Argues that the investigator appeared to be the sole source through all analyses, many assumptions were either internally of externally inconsistent, and the effects…

The authors of research on transition from special education respond to Robin Jackson's review article criticizing their work; deny that their research was subject to external pressure by the Scottish Office Education Department, which funded the research; and respond to several of Jackson's points as misrepresenting or misinterpreting the…

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)

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…

In psychological and special education research, group comparison experimental designs are more often used than single subject experimental designs. However, the application of group designs poses many difficulties, such as the collection of large numbers of homogeneous subjects for a particular experimental condition, the averaging of individual…

Although it is widely known that special assumptions are needed for univariate analysis of repeated measures data, researchers seldom examine their data for violation of these assumptions. This paper reviews ways in which repeated measures analyses are usually handled and describes limitations of these methods. A design with two within subject…

Piaget's class-inclusion task was revised class-inclusion tasks were administered to 64 kindergarten and 64 first-graders. Each of the revisions enhanced performance as compared with Piaget's standard procedures. These results are considered in terms of two possible interpretations. (Author/SDH)

Social studies research has been criticized for sampling bias, inappropriate methodologies, incorrect or inappropriate use of statistics, weak or ill-defined treatments, and lack of replication and/or longitudinal follow-up. In an effort to ascertain whether past criticisms were true of current research as well, a review was conducted of 118…

The Hawthorne and placebo effects in educational experiments were examined over a 20-year period, as reported in the ERIC, Dissertation Abstracts International, and Psych Info data bases. The literature searches identified 325 studies in education employing the relevant control procedures, and each study was coded for the type of placebo…

National Institute of Education (NIE) research priorities indicate the use of panel measures only during the time children are in Follow Through programs and further seem to indicate that only implementation variables should be measured. This paper raises questions about the desirability of the narrow focus implied by the NIE priorities, the…

Although the mail survey has been widely criticized as a viable research methodology, it remains the most feasible approach for retrieving data from large, widely-dispersed populations. This paper suggests that there exists a readily accessible body of pragmatic recommendations which, if adhered to throughout the instrument design and data…