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

Author Question: Why would an experimenter use a pretest-posttest design rather than a between groups design to test ... (Read 42 times)

Pineappleeh

  • Hero Member
  • *****
  • Posts: 585
on: Jun 19, 2018
Why would an experimenter use a pretest-posttest design rather than a between groups design to test the benefits of a new therapy even though s/he knew that maturation effects could cause difficulties of interpretation? The reason is that _____.
 
  a. it would probably take too long to use a between groups design
  b. maturation would be even more of a problem in the between groups design
  c. the treatment group would probably tell the control group about their treatment
  d. ethically, it would not be good to withhold a beneficial therapy from a control group

Question 2

The effects of maturation can be reduced by _____.
 
  a. giving the pretest and posttests at different times of the year.
  b. giving the pretest and posttest at the same time of day
  c. keeping the conditions in the pretest and posttest as distinct as possible
  d. all of these


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fffftttt

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jun 19, 2018
Answer to Question 1

D
Ethical considerations sometimes supercede design considerations, especially when the research is intended to find a good way to help people.

Answer to Question 2

B
The conditions of the pretest and posttest should be as similar as possible.


Pineappleeh

  • Member
  • Posts: 585
Reply 2 on: Jun 19, 2018
Gracias!

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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."

Obturator Muscle Test Obturator Muscle Test
Pat Gorman and Frank Olinsky, Manhattan Design, Three logos for MTV. Pat Gorman and Frank Olinsky, Manhattan Design, Three logos for MTV.
A horizontally opposed engine design helps to lower the vehicle’s center of gravity. A horizontally opposed engine design helps to lower the vehicle’s center of gravity.
Badly burned exhaust valve. A compression test could have detected a problem, and a cylinder ... Badly burned exhaust valve. A compression test could have detected a problem, and a cylinder ...
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ... The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
Mantoux tuberculin skin test. Mantoux tuberculin skin test.
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library