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6. Population validity

  • how well a finding predicts what happens beyond the research
  • Whether the results from the sample can be generalized to the target population
  • When a narrow measure has been used
  • Whether the researcher are measuring how people actually behave in real-world setting

7. External Validity

  • whether the reseacher is measuring how people actually behave in a real-world setting
  • data that we gather which supports the results from a different measure
  • Generalizable beyond the research
  • whether the results from the sample can be generalized to the target populations

8. Criterion/ Predictive validity

  • hether the results from the sample can be generalized to the target population
  • Have we gathered the data which supports the results from a different measure
  • How well findings predict what happens beyond the research
  • Whether the researcher is measuring how people actually behave in a real-world setting