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Chapter 5

Chapter 5. Designing Valid Communication Research. Designing Valid Communication Research. Validity = accuracy Internal Validity External Validity. Measurement Validity and Reliability. Measurement validity Measurement reliability. Testing measurement reliability. Test-retest

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Chapter 5

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  1. Chapter 5 Designing Valid Communication Research

  2. Designing Valid Communication Research • Validity = accuracy • Internal Validity • External Validity

  3. Measurement Validity and Reliability • Measurement validity • Measurement reliability

  4. Testing measurement reliability • Test-retest • Split-half reliability • Intercoder reliability

  5. Testing Measurement Validity • Content validity • Criterion-related validity • Construct validity

  6. 3 Threats to Internal Validity • How research is conducted • Threats due to research participants • Threats due to the researcher

  7. Threats to internal validity due to how research is conducted • Procedure validity & reliability • History • Sleeper effect

  8. Threats to internal validity due to how research is conducted con’t • sensitization • Data analysis

  9. Threats to internal validity due to how research participants • Hawthrone effect • Selection • Statistical regression

  10. Threats to internal validity due to how research participants con’t • Mortality • Maturation • Interparticipant Bias

  11. Threats to internal validity due to how researcher • Researcher personal attribute effect • Researcher unintentional expectancy effect • Researcher observational biases

  12. Threats to External Validity • Sampling • Ecological Validity • Replication

  13. Threats to external validity due to sampling • Population • Target group • census

  14. Sampling • Random sampling • Simple random sample • Systematic sample

  15. Sampling Con’t • Random sampling • Stratified sample • Cluster sample

  16. Non-random sampling • Convenience sample • Volunteer sample • Purposive • Quota • Network

  17. Ecological Validity • Natural settings • Confederates

  18. Replication • Exact replication • Partial replication • Conceptual replication

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