Animal Research
This entry reviews the five basic research designs available to investigators who study the behavior of nonhuman animals. Use of these experimental methods is considered historically, followed by a short review of the experimental method proper. Then, for each design, the discussion focuses on manipulation of the independent variable or variables, examples of testable hypotheses, sources of error and confounding, sources of variation within the design, and statistical analyses. The entry concludes with a section on choosing the appropriate research design. In addition, this entry addresses why it is important to choose a research design prior to collecting data, why certain designs are good for testing some hypotheses but not others, and how to choose a research design. This entry focuses on nonhuman animals, but ...
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Reader's Guide
Descriptive Statistics
Distributions
Graphical Displays of Data
Hypothesis Testing
Important Publications
Inferential Statistics
Item Response Theory
Mathematical Concepts
Measurement Concepts
Organizations
Publishing
Qualitative Research
Reliability of Scores
Research Design Concepts
Research Designs
Research Ethics
Research Process
Research Validity Issues
Sampling
Scaling
Software Applications
Statistical Assumptions
Statistical Concepts
Statistical Procedures
Statistical Tests
Theories, Laws, and Principles
Types of Variables
Validity of Scores
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