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

Author Question: The purpose of a study was to determine the effectiveness of two different analgesic agents in ... (Read 51 times)

Kikoku

  • Hero Member
  • *****
  • Posts: 540
The purpose of a study was to determine the effectiveness of two different analgesic agents in controlling pain during menstruation in females ages 18 to 21 years. Researchers administer a self-reported pain scale on days 2 and 3 of the menses.
 
  You infer that this procedure is an example of which of the following? A) Test-retest reliability
  B) Random sampling procedures
  C) Internal validity of the study
  D) Construct validation

Question 2

In an experimental design, the most serious threat to internal validity typically is:
 
  A) Mortality
  B) Selection
  C) Maturation
  D) History



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

briseldagonzales

  • Sr. Member
  • ****
  • Posts: 303
Answer to Question 1

A
Feedback:
The stability of an instrument is the degree to which similar results are obtained on separate occasions. Stability is assessed through testretest reliability procedures. Researchers administer the measure to the same sample twice and then compare the scores. The self-reported pain scale administered on two different occasions is an example of testretest reliability, not of random sampling procedures or construct validation. The internal validity of the study is not being measured.

Answer to Question 2

A




Kikoku

  • Member
  • Posts: 540
Reply 2 on: Jul 8, 2018
Excellent


fatboyy09

  • Member
  • Posts: 358
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

For a complete list of videos, visit our video library