You are reviewing published research studies on the number of smokers who are leading a sedentary lifestyle in preparation of conducting similar research.
Using your knowledge about research validity, a threat to external validity is interaction of history and intervention. What is the interaction of history and intervention?
A) Occurs when the circumstances of the study influence the results of the study, decreasing the generalizability of the findings
B) Occurs when the characteristics of the study setting influence the outcome of the study, limiting the generalizability of the findings to other settings
C) Occurs when subjects willing to participate in the study are not representative of the target population, thus limiting the generalizability of the results
D) Occurs when the researcher has preconceived expectations of the intervention, resulting in bias and affecting the generalizability of the findings
Question 2
You are reviewing published research studies on animal-assisted therapy with depression patients in preparation of conducting similar research
. Using your knowledge about the uses of comparisons between groups to determine the role of various risk factors in causing the problem, what type of study should be considered?
A) Analytic
B) Descriptive
C) Intervention
D) Observational
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