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

Author Question: Changes that occur naturally in the subjects, over time could result in the confound of: a. ... (Read 66 times)

Yolanda

  • Hero Member
  • *****
  • Posts: 757
on: Jun 19, 2018
Changes that occur naturally in the subjects, over time could result in the confound of:
 
  a. history.
  b. maturation.
  c. regression to the mean.
  d. diffusion of treatment.

Question 2

Internal validity is:
 
  a. the extent to which the results of an experiment can be attributed to the manipulation of the dependent variable, rather than to some confounding variable.
 b. the extent to which the results of an experiment can be attributed to the manipulation of the independent variable, rather than to some confounding variable.
 c. the extent to which the results of an experiment can be generalized.
  d. both b and c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

debra928

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jun 19, 2018
Answer to Question 1

b

Answer to Question 2

b


Yolanda

  • Member
  • Posts: 757
Reply 2 on: Jun 19, 2018
Wow, this really help

Mochi

  • Member
  • Posts: 300
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Two transesterification reactions that result in splicing of exons in pre-mRNA Two transesterification reactions that result in splicing of exons in pre-mRNA
The use of antispasmodics, which block release of Ach or calcium, can result in reduced pain as well ... The use of antispasmodics, which block release of Ach or calcium, can result in reduced pain as well ...
The injector on-time is called the pulse width. The injector on-time is called the pulse width.
Mr. jackson's lab result - Chest X-Ray, CT Scan of Brain, and Cerebral Angiogram Mr. jackson's lab result - Chest X-Ray, CT Scan of Brain, and Cerebral Angiogram
As a result of the pressure gradient in the following picture, what happens to transpiration? As a result of the pressure gradient in the following picture, what happens to transpiration?
Immune-to-brain signaling occurs in response to infection, injury, and inflammation that occur in pe Immune-to-brain signaling occurs in response to infection, injury, and inflammation that occur in pe
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

For a complete list of videos, visit our video library