Research Chapter 7.pptx

# Research Chapter 7.pptx - Research in Counseling Chapter 7...

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Research in Counseling: Chapter 7
Validity Issues in Research To draw valid conclusions about research questions, the researcher must design a study that minimizes the potential to generate alternative explanations for the study’s results.
4 Types of Validity Validity The degree to which inferences reflect how things actually are is referred to as validity. 1. Statistical Conclusion Validity 2. Internal Validity 3. Construct Validity 4. External Validity
Statistical Conclusion Validity Statistical Conclusion Validity The degree to which the researcher has come to the correct conclusion about this relationship. Null hypothesis: predict there is no relationship between variables in study Alternative hypothesis: there is some true relationship between the variables Type 1 error: incorrectly concluding true relationship among variable exist Type 2 error: incorrectly concluding that there is no relationship
Statistical Conclusion Validity Threats Low statistical power Power is the probability of correctly deciding if there is a true relationship, if indeed a true relationship exists; studies with low power often result in the conclusion that no relationship exists when in fact a true relationship exists

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• Fall '19
• Null hypothesis, Statistical hypothesis testing, statistical conclusion validity

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