In critiquing a comparative descriptive study design, which of ...

[eruditmonkey@yahoo.com]

In critiquing a comparative descriptive study design, which of the following would be cited as a deficit of a study? The:
 
  a. instrument used in the study was created by the researcher specifically for the project.
  b. literature search was not long enough; it included only six references.
  c. researcher did not say what theory or conceptual model provided the foundation for the study.
  d. study used two groups that were not randomly assigned.

Question 2

Which of the following must be present in experimental research?
 
  a. A comparison group made up of different subjects
  b. Convenience sample of subjects from the population
  c. Matching of subjects on demographic characteristics
  d. Random assignment of subjects to groups

[yasmina]

Answer to Question 1

ANS: A
New instruments have not established validity and reliability, which could be a problem without further testing.
One reason a descriptive study might be conducted is because little is known about the subject. A brief reference list is not a problem if it truly represents the literature available. New instruments have not established validity and reliability, which could be a problem without further testing.
It not necessarily a problem if the researcher did not say what theory or conceptual model provided the foundation for the study as long as one can be inferred from the report. New instruments have not established validity and reliability, which could be a problem without further testing.
Random assignment is not used in descriptive designs. Data are collected from naturally occurring groups and analyzed for comparison. New instruments have not established validity and reliability, which could be a problem without further testing.

Answer to Question 2

ANS: D
Three essential elements of experimental research are random assignment of subjects to groups, researcher-controlled manipulation of the independent variable, and researcher control of the experimental situation and setting.
Subjects may serve as their own controls. Three essential elements of experimental research are random assignment of subjects to groups, researcher-controlled manipulation of the independent variable, and researcher control of the experimental situation and setting.
Convenience samples are not required. Three essential elements of experimental research are random assignment of subjects to groups, researcher-controlled manipulation of the independent variable, and researcher control of the experimental situation and setting.
The matching of subjects on demographic characteristics is not necessary in experimental research; random assignment is preferable. Three essential elements of experimental research are random assignment of subjects to groups, researcher-controlled manipulation of the independent variable, and researcher control of the experimental situation and setting.

[eruditmonkey@yahoo.com]

Excellent

Gracias!