« previous next »

Author Question: How do randomized controlled trials (RCTs) differ from other pretest-posttest designs? a) The ... (Read 27 times)

anjilletteb

  • Hero Member
  • *****
  • Posts: 569
on: Jun 22, 2018
How do randomized controlled trials (RCTs) differ from other pretest-posttest designs?
 
  a) The focus is on intervention.
  b) The researchers use random selection.
  c) The experiment is in a lab.
  d) The participants are representative.

Question 2

What is a typical strategy used to ensure equivalence of experimental groups?
 
  a) Matching subjects at posttreatment
  b) Randomly assigning cases to conditions
  c) Post-testing nuisance variables
  d) Using a random number chart


makaylafy

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jun 22, 2018
Answer to Question 1

Correct Answer: a

Answer to Question 2

Correct Answer: b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

A Controlled Cross between Two Plants A Controlled Cross between Two Plants
Client on IV patient-controlled analgesia (PCA). Client on IV patient-controlled analgesia (PCA).
When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ... When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ...
Overview of a computer-controlled high-pressure common rail V-8 diesel engine. Overview of a computer-controlled high-pressure common rail V-8 diesel engine.
A variable valve timing solenoid being controlled by applying voltage from the PCM. A variable valve timing solenoid being controlled by applying voltage from the PCM.
Doing Qualitative Research: Designs, Methods, and Techniques Doing Qualitative Research: Designs, Methods, and Techniques
Video: Exocytosis - secretion

For a complete list of videos, visit our video library