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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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Paolaemy Paolaemy
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6 years ago
Experimental research is conducted to establish a cause-and-effect relationship. Rival explanations or competing hypotheses that might explain the study results indicate that a study has which situation?
 
  1. Threats to internal validity only
  2. Threats to internal and external validity
  3. Threats to external validity only
  4. Limited generalizability of results
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physicophysico
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6 years ago
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Paolaemy Author
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6 years ago
Smart ... Thanks!
sudenzia
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Yesterday
Thank you, thank you, thank you!
annielin111
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2 hours ago
You make an excellent tutor!
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