Unformatted text preview: How do these two relate to concept of artifacts vs. confounds. Which is a threat to internal validity and which to external? What is heterogeneous and homogeneous attrition? How do they relate to artifacts vs. confounds? What are three safeguards that researchers can ake to prevent these effedts from introducing confounds or artifacts into psych research? 1) 2) 3) Make vocab list for this chapter...
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- Spring '08
- external validity, internal validity, Ecological validity, confounds