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Peer reviewedRheinheimer, David C.; Penfield, Douglas A. – Journal of Experimental Education, 2001
Studied, through Monte Carlo simulation, the conditions for which analysis of covariance (ANCOVA) does not maintain adequate Type I error rates and power and evaluated some alternative tests. Discusses differences in ANCOVA robustness for balanced and unbalanced designs. (SLD)
Descriptors: Analysis of Covariance, Monte Carlo Methods, Power (Statistics), Research Design
Peer reviewedKlockars, Alan J.; Beretvas, S. Natasha – Journal of Experimental Education, 2001
Compared the Type I error rate and the power to detect differences in slopes and additive treatment effects of analysis of covariance (ANCOVA) and randomized block designs through a Monte Carlo simulation. Results show that the more powerful option in almost all simulations for tests of both slope and means was ANCOVA. (SLD)
Descriptors: Analysis of Covariance, Monte Carlo Methods, Power (Statistics), Research Design
Peer reviewedOakes, J. Michael; Feldman, Henry A. – Evaluation Review, 2001
Describes and compares useful and unified power formulas for analysis of covariance and change-score analyses, indicating the implications of each for sample size requirements. Contains practical recommendations for evaluations and outlines a simple spreadsheet approach. (SLD)
Descriptors: Analysis of Covariance, Power (Statistics), Pretests Posttests, Research Design
Peer reviewedColl, Richard K.; Chapman, Richard – Asia-Pacific Journal of Cooperative Education, 2000
Both quantitative and qualitative methodologies have advantages and disadvantages. Choice of methodology should be determined by the nature of the research objectives. Cooperative education researchers should consider qualitative or combined-methodology inquiries including interviews and action research. (SK)
Descriptors: Action Research, Cooperative Education, Interviews, Qualitative Research
Peer reviewedMarch, John; Kratochvil, Christopher; Clarke, Gregory; Beardslee, William; Derivan, Albert; Emslie, Graham; Green, Evelyn P.; Heiligenstein, John; Hinshaw, Stephen; Hoagwood, Kimberly; Jensen, Peter; Lavori, Philip; Leonard, Henrietta; McNulty, James; Michaels, M. Alex; Mossholder, Andrew; Osher, Trina; Petti, Theodore; Prentice, Ernest; Vitiello, Benedetto; Wells, Karen – Journal of the American Academy of Child and Adolescent Psychiatry, 2004
Objective: The use of placebo in the pediatric age group has come under increasing scrutiny. At the 2002 Annual Meeting of the American Academy of Child and Adolescent Psychiatry, the Academy's Workgroup on Research conducted a research forum. The purpose was to identify challenges and their solutions regarding the use of placebo in randomized…
Descriptors: Research Design, Psychiatry, Pharmacology, Industry
Peer reviewedLebowitz, Barry D. – Gerontologist, 2004
This article, based on a Lawton Award Lecture, addresses the subject of the need to enhance the evidence base in our field in order to influence processes of policy development. Four issues are identified as critical to this: theory-driven targets of public health significance, use of appropriate and sophisticated approaches to research design and…
Descriptors: Research Design, Public Policy, Methods, Public Health
Direct linkRidgeway, Cecilia L.; Correll, Shelley J. – Social Forces, 2006
We develop a new status construction theory argument that apparently valid social realities in which a salient social difference is consistently linked to signs of status and competence induce participants to form status beliefs. Supporting this social validity account, an experiment showed that when an influence hierarchy developed between…
Descriptors: Beliefs, Social Differences, Social Status, Computer Simulation
Bell, Philip – Educational Psychologist, 2004
Over the past decade, design experimentation has become an increasingly accepted mode of research appropriate for the theoretical and empirical study of learning amidst complex educational interventions as they are enacted in everyday settings. There is still a significant lack of clarity surrounding methodological and epistemological features of…
Descriptors: Learning Theories, Epistemology, Experiments, Educational Research
Hafer, Carolyn L.; Begue, Laurent – Psychological Bulletin, 2005
M. J. Lerner (1980) proposed that people need to believe in a just world; thus, evidence that the world is not just is threatening, and people have a number of strategies for reducing such threats. Early research on this idea, and on just-world theory more broadly, was reviewed in early publications (e.g., M. J. Lerner, 1980; M. J. Lerner & D. T.…
Descriptors: Psychological Studies, Justice, Theories, Research Methodology
Logemann, Jeri A. – Journal of Communication Disorders, 2004
Recent importance placed upon efficacy research has spawned the development of the Communication Sciences and Disorders Clinical Trials Research Group (CSDRG). This group, funded by the National Institutes of Health (NIH), was organized by the American Speech Language and Hearing Association to address the need for more treatment efficacy research…
Descriptors: Communication Disorders, Communication Research, Speech Language Pathology, Research Design
Johnson, R. Burke; Onwuegbuzie, Anthony J. – Educational Researcher, 2004
The purposes of this article are to position mixed methods research ("mixed research" is a synonym) as the natural complement to traditional qualitative and quantitative research, to present pragmatism as offering an attractive philosophical partner for mixed methods research, and to provide a framework for designing and conducting mixed methods…
Descriptors: Statistical Analysis, Models, Qualitative Research, Methods Research
An Objective Comparison of Applied Behavior Analysis and Organizational Behavior Management Research
Culig, Kathryn M.; Dickinson, Alyce M.; McGee, Heather M.; Austin, John – Journal of Organizational Behavior Management, 2005
This paper presents an objective review, analysis, and comparison of empirical studies targeting the behavior of adults published in Journal of Applied Behavior Analysis (JABA) and Journal of Organizational Behavior Management (JOBM) between 1997 and 2001. The purpose of the comparisons was to identify similarities and differences with respect to…
Descriptors: Comparative Analysis, Behavioral Science Research, Differences, Research Methodology
McNamara, James F. – International Journal of Educational Reform, 2004
This article is the third contribution to a research methods series dedicated to getting good results from survey research. In this series, "good results" is a stenographic term used to define surveys that yield accurate and meaningful information that decision makers can use with confidence when conducting program evaluation and policy assessment…
Descriptors: Surveys, Questionnaires, Guidelines, Material Development
Kravchuk, Olena; Elliott, Antony; Bhandari, Bhesh – Journal of Food Science Education, 2005
A simple laboratory experiment, based on the Maillard reaction, served as a project in Introductory Statistics for undergraduates in Food Science and Technology. By using the principles of randomization and replication and reflecting on the sources of variation in the experimental data, students reinforced the statistical concepts and techniques…
Descriptors: Laboratory Experiments, Foods Instruction, Chemistry, Statistical Analysis
Fail, Helen; Thompson, Jeff; Walker, George – Journal of Research in International Education, 2004
This article is based on a multiple case study which examines the lives of a group of 11 former international school students who all attended an international school between 20 and 50 years ago. The research design was based on a review of the literature on third culture kids and adult third culture kids, covering emotional and relational issues…
Descriptors: Research Design, International Schools, Biographies, Case Studies
