The nurse researcher designed a study examining anxiety among ...

[abarnes]

The nurse researcher designed a study examining anxiety among elementary school children.
 
  If a widely publicized murder of a child occurred in the city during the time frame of the study, what type of threat to internal validity would the murder represent?
  a. Maturation
  b. Instrumentation
  c. Selection bias
  d. Historical

Question 2

The issue of control would be less important in a quantitative study with which type of research design?
 
  a. Exploratory
  b. Experimental
  c. Correlational
  d. Randomized clinical trial

[bob]

Answer to Question 1

ANS: D

Feedback
A Maturation represents developmental, biological, or psychological processes within individuals occurring or changing as a function of time.
B Instrumentation threats refer to changes in the measurement of variables or observational techniques that may change obtained measurement.
C Selection bias occurs when precautions are not used to obtain a representative sample.
D The murder would represent a historical event threatening internal validity.

Answer to Question 2

ANS: A

Feedback
A Control is less important in exploratory studies because the researcher is investigating an area in which little literature exists.
B Control is critical to optimal experimental design.
C Control is important to correlational studies because relationships between variables are being studied.
D Control is essential to randomized clinical trials because their outcomes have direct implications for patient treatments.