1. Conclusion validity Threats to conclusion validity Power Decision matrix explained Mr. Robert Becker -- The decision matrix in action, “The O.J. Simpson Trial.” Conclusion Validity (con’t)

2. What you did and what you saw? Your program and your observations? Observation ProgramObservations What you do What you see Is there a relationship between... In this study Program-outcome relationship Conclusion Validity

3. The extent to which the research design is sufficiently precise or powerful enough for the detection of effects on the operationalized variable should they exist Conclusion Validity

4. Sufficient power Reasonable evidence to find that that the cause and effect covary Significant covariation Elements of Conclusion Validity

5. Power Threats to Conclusion Validity Threats to Conclusion Validity Important Concepts