A nurse researcher assessing patient anxiety levels in a cli…

A nurse researcher assessing patient anxiety levels in a clinical setting asks several colleagues to evaluate a self-administered questionnaire as a data collection instrument to determine if the tool appears to effectively measure patient anxiety. In this context, which type of validity is the nurse testing for?

A nurse is reviewing evidence for a new heartburn prevention…

A nurse is reviewing evidence for a new heartburn prevention medicine. One piece of evidence is a study in which participants were assigned to the experimental group or control group based on whether their participant number was odd or even. Neither the participants nor the researchers knew which participants were in which group. The nurse is reviewing what type of evidence?