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Research Design - Coggle Diagram

- - - - Construct Validity-must assure that a measure of empathy is measuring empathy and not compassion
        
        Statistical Conclusion Validity-examines whether the right statistical method was used for hypotheses testing, whether the variables used meet the assumptions of that statitical test
  - - - Statistical Control-extraneous variable are measured & used as covariates during the statistical testing process
        
        Randomization-cancelling out the effects of extraneous variables through a process of random sampling if it can be assured that these effects are of a random nature
    - - Inclusion-extraneous variable is considered by including them in the research design & separately estimating their effects on the dependent variable