This topic contains a solution. Click here to go to the answer

Author Question: A researcher conducts research and uses a small sample that is not randomly selected. When he ... (Read 102 times)

aabwk4

  • Hero Member
  • *****
  • Posts: 593
A researcher conducts research and uses a small sample that is not randomly selected. When he replicates the study, twice, he again uses the same site and another small sample that is not randomly selected. This is a threat to which type of validity?
 
  a. Statistical conclusion validity
  b. Internal validity
  c. Construct validity
  d. External validity

Question 2

A researcher tests a new intervention for nausea associated with chemotherapy, in hospitalized patients.
 
  At the same time a new over-the-counter medication containing natural herbs is marketed aggressively, and some of the hospital patients are given this herbal remedy by their families. This is a threat to which type of validity?
  a. Statistical conclusion validity
  b. Internal validity
  c. Construct validity
  d. External validity



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bobsmith

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

ANS: D
Construct validity examines the fit between the conceptual definitions and operational definitions of variables: are the study ideas measured in a way that makes sense? Statistical conclusion validity is concerned with whether the conclusions about relationships or differences drawn from statistical analysis are an accurate reflection of the real world: did the researcher use the right statistical tests in the proper way? Internal validity is the extent to which the effects detected in the study are a true reflection of reality rather than the result of extraneous variables: did the change in one variable really account for the change in the other variable? External validity is concerned with the extent to which study findings can be generalized beyond the sample used in the study.

Answer to Question 2

ANS: B
Construct validity examines the fit between the conceptual definitions and operational definitions of variables: are the study ideas measured in a way that makes sense? Statistical conclusion validity is concerned with whether the conclusions about relationships or differences drawn from statistical analysis are an accurate reflection of the real world: did the researcher use the right statistical tests in the proper way? Internal validity is the extent to which the effects detected in the study are a true reflection of reality rather than the result of extraneous variables: did the change in one variable really account for the change in the other variable? External validity is concerned with the extent to which study findings can be generalized beyond the sample used in the study.




aabwk4

  • Member
  • Posts: 593
Reply 2 on: Jul 8, 2018
Excellent


hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

For a complete list of videos, visit our video library