- Slides: 8
VALIDITY Accuracy, meaningfulness, and credibility
Considering the Validity of your Method � � Does the study have sufficient controls to ensure that the conclusions we draw are truly warranted by the data? Can we use what we have observed in the research situation to make generalizations about the world beyond that specific situation?
Internal Validity � � The extent to which the research design and data allow the researcher to draw accurate conclusions about cause-and-effect and other relationships within the data. See p. 97 -98 in research book… Be aware of the “Hawthorne effect. ” To ensure internal validity, we must eliminate other possible explanations for the results we observe.
Ways to Increase Internal Validity � � A controlled laboratory study A double-blind experiment Unobtrusive measures Triangulation
External Validity � � The extent to which the results apply to situations beyond the study itself In other words, can the conclusions be generalized to other contexts?
Ways to Enhance External Validity � � � A real-life setting A representative sample Replication
Ethical Issues in Research � � � Protection from harm Informed consent Right to privacy Honesty Internal Review Boards
Guides for Choosing a Research Approach � Using your texts, make copies of tables 5. 1 and 5. 2…I will check this for a grade, AND you will have a quiz on the material from this power point and from the tables NEXT Wednesday (October 26).