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 23 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
Great answer, keep it coming :)

ricroger

  • Member
  • Posts: 352
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?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Peptic ulcer. A peptic ulcer may occur in the stomach (gastric ulcer), as shown here, or in the duod Peptic ulcer. A peptic ulcer may occur in the stomach (gastric ulcer), as shown here, or in the duod
This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev
Pressure is a result of the atmosphere’s mass. Pressure is a result of the atmosphere’s mass.
Time course for antibodies to the EBV viral–specific antigens. Time course for antibodies to the EBV viral–specific antigens.
Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf
Surtsey, a volcanic island, during the time of its formation. Surtsey, a volcanic island, during the time of its formation.
Video: A timeline of the teeth (Explained - No Audio)

For a complete list of videos, visit our video library