The nurse wishes to conduct research on the number of cancer clients who are actively involved in exercise programs following chemotherapy. To prepare, the nurse reviews similar, published research studies
The nurse knows that maturation can be a threat to internal validity of the research study. Which is an example of maturation?
A) A heat wave occurred during the study and clients who normally exercised outside were unable to do so.
B) A client developed fatigue and was unable to complete the exercise program.
C) Repeated stress tests on stationary bicycles demotivated clients from participating.
D) Inclusion of a former Olympic athlete in the study skewed the results.
Ans: B
Feedback:
Maturation is unplanned and unrecognized changes in the participants that could affect the findings of the study, such as fatigue, hunger, or increased knowledge. History is events that are occurring during the study, which could influence participants' responses to the intervention. Testing is effect of multiple measurements of participants' responses that could influence the participants' responses, thereby altering the outcome of the study. Selection is the process by which participants are selected and grouped for a study. This threat is more likely to occur when randomization is not possible.
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