Which type of bias occurs when the dependent variable is influenced by changes made in the way variables are measured?
a. Threat of history
b. Threat of instrumentation
c. Threat of maturation
d. Threat of selection bias
Question 2
In which type of designs do neither subjects nor individuals administering the treatments know if subjects are receiving experimental interventions or the standard of care?
a. Double-blind experimental
b. Longitudinal (prospective)
c. Quasi-experimental
d. Nonexperimental
Much time and effort occurs between the development of a research idea and the statistical analysis
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