This article presents a fairly quick, easy way to decide what size sample is needed for a survey, given a desired level of confidence and degree of accuracy. The method proposed will work on any multiple response instrument. A technical mathematical explanation is also included. (GK)

Restriction in range is a measurement problem frequently encountered in research studies that utilize correlation coefficients. A FORTRAN program is described that can compute the estimated unrestricted correlation coefficient in either the explicit or implicit case. The user selects the appropriate formula to be employed from five that are…

Contrasts the naturalistic research paradigm with the scientific model, noting that the naturalistic paradigm assumes multiple reality, subject-object interrelatedness, and contextuality. Skills required for the pursuit of naturalistic inquiry are described. (JEG)

The article illustrates a method to estimate changes in the statistical power of a study which are caused by changes in the reliability of the dependent variable. (Author)

This paper surveys available techniques and introduces an explicit statement of a new statistic to test for equality of correlated proportions in a polychotomous response design. A set of guidelines for the potential user of the techniques is provided. (Author/CTM)

Two hundred Michigan principals were sent a personality inventory. There was no significant difference in response rate between administrators who did or did not receive cover letters; but response rate was higher when the principals' secretaries received preletters soliciting their help in getting the administrator to respond. (SJL)

Different chi-square statistics reported in many-faceted Rasch model analysis are presented and interpreted using facets of subjects, judges, sessions, topics, and tasks for 74 subjects. Chi-square statistics are useful for determining the significance and interaction effects of facets and identifying adjustments to subjects' calibrated logit…

Research articles (n=174) published in the "Journal of Learning Disabilities" from 1989 through 1993 were analyzed and coded by type of research design and statistical technique used. Eighty percent of the research designs were nonintervention methods; 55% of all statistical techniques were coded as primary, 32% were intermediate, and…

Used Monte Carlo methods to examine the Type I error rates for randomization tests applied to single-case data arising from ABAB designs involving random, systematic, or response-guided assignment of interventions. Discusses conditions under which Type I error rate is controlled or is not. (SLD)

Sets out definitions of expert found in three studies: situated effectiveness, emergent measure, and constrained elaboration. Outlines recommendations for selecting expert teachers to participate in research studies. (Contains 18 references.) (SK)

Introduces the articles of this special issue focusing on randomized field trials in criminology. In spite of the overall lack of randomized field trials in criminology, some agencies and individuals are able to mount an impressive number of field trials, and these articles focus on their experiences. (SLD)

Discusses advantages of randomized experiments and key issues raised in this special issue. Focuses on growth and decrease in the use of randomized experiments by the California Youth Authority, the U.S. National Institute of Justice, and the British Home Office. Calls for increased recognition of the importance of randomized experiments. (SLD)

Describes the randomized field trials conducted by the California Youth Authority in the 1960s and 1970s and discusses why such rigorous tests were used and why they eventually came to be used less often. (SLD)

Discusses the contrast between the frequency of randomized clinical trials in the health sciences and the relative famine of such studies in criminology. Attributes this difference to the contexts in which research is done and the difference in the status of situational research in the two disciplines. (SLD)

Business educators can develop a sustainable research program if they grasp what constitutes well-designed research, recognize the sources of research ideas, know how to refine research ideas, understand how to make a research program integrated and cohesive, realize the importance of replication, and enhance their research productivity using a…