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• Home
• Table of Contents
• Navigating
  • Yin-Yang Map
  • The Road Map
• Foundations
  • Language Of Research
    • Five Big Words
    • Types of Questions
    • Time in Research
    • Types of Relationships
    • Variables
    • Hypotheses
    • Types of Data
    • Unit of Analysis
    • Two Research Fallacies
  • Philosophy of Research
    • Structure of Research
    • Deduction & Induction
    • Positivism & Post-Positivism
    • Introduction to Validity
  • Ethics in Research
  • Conceptualizing
    • Problem Formulation
    • Concept Mapping
  • Evaluation Research
    • Introduction to Evaluation
    • The Planning-Evaluation Cycle
    • An Evaluation Culture
• Sampling
  • External Validity
  • Sampling Terminology
  • Statistical Terms in Sampling
  • Probability Sampling
  • Nonprobability Sampling
• Measurement
  • Construct Validity
    • Measurement Validity Types
    • Idea of Construct Validity
    • Convergent & Discriminant Validity
    • Threats to Construct Validity
    • The Nomological Network
    • The Multitrait-Multimethod Matrix
    • Pattern Matching for Construct Validity
  • Reliability
    • True Score Theory
    • Measurement Error
    • Theory of Reliability
    • Types of Reliability
    • Reliability & Validity
  • Levels of Measurement
  • Survey Research
    • Types of Surveys
    • Selecting the Survey Method
    • Constructing the Survey
      • Types Of Questions
      • Question Content
      • Response Format
      • Question Wording
      • Question Placement
    • Interviews
    • Plus & Minus of Survey Methods
  • Scaling
    • General Issues in Scaling
    • Thurstone Scaling
    • Likert Scaling
    • Guttman Scaling
  • Qualitative Measures
    • The Qualitative Debate
    • Qualitative Data
    • Qualitative Approaches
    • Qualitative Methods
    • Qualitative Validity
  • Unobtrusive Measures
• Design
  • Internal Validity
    • Establishing Cause & Effect
    • Single Group Threats
      • Regression to the Mean
    • Multiple Group Threats
    • Social Interaction Threats
  • Introduction to Design
  • Types of Designs
  • Experimental Design
    • Two-Group Experimental Designs
      • Probabilistic Equivalence
      • Random Selection & Assignment
    • Classifying Experimental Designs
    • Factorial Designs
      • Factorial Design Variations
    • Randomized Block Designs
    • Covariance Designs
    • Hybrid Experimental Designs
  • Quasi-Experimental Design
    • The Nonequivalent Groups Design
    • The Regression-Discontinuity Design
    • Other Quasi-Experimental Designs
  • Relationships Among Pre-Post Designs
  • Designing Designs for Research
  • Advances in Quasi-Experimentation
• Analysis
  • Conclusion Validity
    • Threats to Conclusion Validity
    • Improving Conclusion Validity
    • Statistical Power
  • Data Preparation
  • Descriptive Statistics
    • Correlation
  • Inferential Statistics
    • The T-Test
    • Dummy Variables
    • General Linear Model
    • Posttest-Only Analysis
    • Factorial Design Analysis
    • Randomized Block Analysis
    • Analysis of Covariance
    • Nonequivalent Groups Analysis
    • Regression-Discontinuity Analysis
    • Regression Point Displacement Analysis
• Write-Up
  • Key Elements
  • Formatting
  • Sample Paper
• Appendices
  • Citing the KB
  • Order the KB
  • Copyright Notice
• Search

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Copyright ©2006, William M.K. Trochim, All Rights Reserved
Purchase a printed copy of the Research Methods Knowledge Base
Last Revised: 10/20/2006

• Home
• Table of Contents
• Navigating
• Foundations
• Sampling
• Measurement
• Design
• Analysis
• Write-Up
• Appendices
• Search