« previous next »

Author Question: The threat to internal validity that occurs when external events or conditions affect one group more ... (Read 77 times)

Jipu 123

  • Hero Member
  • *****
  • Posts: 569
on: Jul 8, 2018
The threat to internal validity that occurs when external events or conditions affect one group more than another is the threat known as:
 
  A) Maturation
  B) Selection
  C) Testing
  D) History

Question 2

Most evidence hierarchies put which of the following at the pinnacle?
 
  A) Randomized clinical trials
  B) Program evaluations
  C) Quality improvement projects
  D) Meta-analyses of multiple clinical trials


polinasid

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 8, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Feedforward events can be conditioned to external stimuli. Feedforward events can be conditioned to external stimuli.
Feedforward events can be conditioned to external stimuli. Feedforward events can be conditioned to external stimuli.
An adult tooth, longitudinal view showing internal structures of the crown and root. An adult tooth, longitudinal view showing internal structures of the crown and root.
A, External respiration; B, internal respiration. A, External respiration; B, internal respiration.
Urinary catheterization. The procedure involves the insertion of a flexible tube, or catheter, throu Urinary catheterization. The procedure involves the insertion of a flexible tube, or catheter, throu
Use an Automated External Defibrillator Use an Automated External Defibrillator
Video: Interview with Person who has Panic Attacks

For a complete list of videos, visit our video library