« previous next »

Author Question: Define external validity in research design. Describe in detail one threat to the external validity ... (Read 182 times)

scienceeasy

  • Hero Member
  • *****
  • Posts: 565
on: Jun 19, 2018
Define external validity in research design. Describe in detail one threat to the external validity of a research study. Be sure to specify how that characteristic is a threat to external validity.
 
  What will be an ideal response?

Question 2

The group of people you select to be in your study is the ____.
 
  a. sample
 b. population
 c. theoretical population
  d. accessible population


bigcheese9

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jun 19, 2018
Answer to Question 1

External validity is the degree to which the results of a study can be generalized outside the specific confines of the study. A threat to external validity is any feature of the study that limits generalization of the results. Threats to external validity can be classified into three categories: (1) results obtained for a unique group of participants may not generalize to other participants; (2) results obtained from a study with unique features not generalize to other studies; (3) results obtained with a specific measurement procedure may not generalize to other measurement procedures.

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

scienceeasy

  • Hero Member
  • *****
  • Posts: 565
Reply #2 on: Jun 19, 2018
Thank you


bigcheese9

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Jun 19, 2018
No problem :)


« previous next »
 

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Feedforward events can be conditioned to external stimuli. Feedforward events can be conditioned to external stimuli.
While numerous subspecies of the jaguar have been recognized, recent research suggests just three. G While numerous subspecies of the jaguar have been recognized, recent research suggests just three. G
Comparison of Steps of the Nursing Process with the Research Process Comparison of Steps of the Nursing Process with the Research Process
Attributed to Apollodorus, Column of Trajan, Rome (detail). Attributed to Apollodorus, Column of Trajan, Rome (detail).
Marcantonio Raimondi, The Judgment of Paris (detail). Marcantonio Raimondi, The Judgment of Paris (detail).
Video: The pH scale - Strong acids and Weak acids

For a complete list of videos, visit our video library