A nurse researcher would decide to use a retrospective or ex post ...

[madam-professor]

A nurse researcher would decide to use a retrospective or ex post facto study for which reason?
 
  a. Obtaining informed consent is not an important issue.
  b. There is maximal opportunity to manipulate the independent variable.
  c. The dependent variable is measured at multiple times to examine maturation.
  d. The dependent variable has already been affected by the independent variable.

Question 2

A nurse researcher would decide to use a longitudinal or prospective design for which reason?
 
  a. It is associated with data that are focused and deep.
  b. It allows the overall study to be more manageable for the researcher.
  c. It allows the issue of maturation to be avoided as a threat to internal validity.
  d. It allows the nurse researcher to avoid the use of tools or instrumentation.

[pikon]

Answer to Question 1

ANS: D

Feedback
A Informed consent may be necessary in retrospective studies given some research topics.
B A retrospective study does not involve the manipulation of variables.
C Effect on the dependent variable has occurred already, so maturation is not an issue.
D In an ex post facto study the dependent variable has already been affected.

Answer to Question 2

ANS: A

Feedback
A Longitudinal or prospective designs are associated with more in-depth, focused data collection.
B A longitudinal design can be more difficult for the researcher given the length of time involved.
C Maturation is a threat to internal validity in longitudinal design.
D Longitudinal design often requires use of measurement tools or instruments.