This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: According to Cook and Campbell (1979), if you have evidence that the naturally-occurring groups in a ... (Read 36 times)

drink

  • Hero Member
  • *****
  • Posts: 554
on: Aug 4, 2018
According to Cook and Campbell (1979), if you have evidence that the naturally-occurring groups in a nonequivalent control-group design are NOT equivalent on potential confounding variables,
 
  A) you should find new naturally-occurring groups that are equivalent.
  B) you may be able to draw conclusions if you carefully evaluate all potential threats to validity.
  C) you should continue with the experiment as planned, because the groups only need to be equivalent on the dependent measure.
  D) you may be able to draw conclusions if you reassign participants to different groups.

Question 2

What is a major problem with nonequivalent groups?
 
  A) The groups may differ on the dependent measure(s) at the start of the study.
  B) There may be confounding variables not controlled by random assignment.
  C) The groups may differ on the independent measure at the start of the study.
  D) Both A and B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bigsis44

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Aug 4, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D


drink

  • Member
  • Posts: 554
Reply 2 on: Aug 4, 2018
:D TYSM

ryhom

  • Member
  • Posts: 366
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Common skin signs are often evidence of an illness or disorder. A macule is a discolored spot on the ... Common skin signs are often evidence of an illness or disorder. A macule is a discolored spot on the ...
Common skin signs are often evidence of an illness or disorder. A papule is a solid, circumscribed, ... Common skin signs are often evidence of an illness or disorder. A papule is a solid, circumscribed, ...
Reference Groups Reference Groups
Evidence for the covalent intermediate in the mechanism of lysozyme Evidence for the covalent intermediate in the mechanism of lysozyme
Blood Groups and Blood Types Blood Groups and Blood Types
Video: Introduction to Insulin

For a complete list of videos, visit our video library