To request a free 30-day online trial to this product, visit www.sagepub.com/freetrialResearch design can be daunting for all types of researchers. At its heart it might be described as a formalized approach toward problem solving, thinking, and acquiring knowledge--the success of which depends upon clearly defined objectives and appropriate choice of statistical tools, tests, and analysis to meet a project′s objectives.Comprising more than 500 entries, the Encyclopedia of Research Design explains how to make decisions about research design, undertake research projects in an ethical manner, interpret and draw valid inferences from data, and evaluate experiment design strategies and results. Two additional features carry this encyclopedia far above other works in the field: bibliographic entries devoted to significant articles in the history of research design and reviews of contemporary tools, such as software and statistical procedures, used to analyze results.Key FeaturesCovers the spectrum of research design strategies, from material presented in introductory classes to topics necessary in graduate researchAddresses cross- and multidisciplinary research needs, with many examples drawn from the social and behavioral sciences, neurosciences, and biomedical and life sciencesProvides summaries of advantages and disadvantages of often-used strategiesUses hundreds of sample tables, figures, and equations based on real-life casesKey ThemesDescriptive StatisticsDistributionsGraphical Displays of DataHypothesis TestingImportant PublicationsInferential StatisticsItem Response TheoryMathematical ConceptsMeasurement ConceptsOrganizationsPublishingQualitative ResearchReliability of ScoresResearch Design ConceptsResearch DesignsResearch EthicsResearch ProcessResearch Validity IssuesSamplingScalingSoftware ApplicationsStatistical AssumptionsStatistical ConceptsStatistical ProceduresStatistical TestsTheories, Laws, and PrinciplesTypes of VariablesValidity of ScoresThe Encyclopedia of Research Design is the perfect instrument for new learners as well as experienced researchers to explore both the original and newest branches of the field.