Author Question: In experimental designs, random assignment of participants helps to reduce threats to A) internal ... (Read 89 times)

deesands

  • Hero Member
  • *****
  • Posts: 514
In experimental designs, random assignment of participants helps to reduce threats to
 
  A) internal validity.
  B) external validity.
  C) construct validity.
  D) statistical validity.

Question 2

In an experiment, it is of great importance to employ
 
  A) biased participant assignment.
  B) systematic manipulations of the dependent variable.
  C) payment of participants in order not to rely on volunteers.
  D) random assignment of participants to conditions.



Chocorrol77

  • Sr. Member
  • ****
  • Posts: 313
Answer to Question 1

Answer: A

Answer to Question 2

Answer: D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

For a complete list of videos, visit our video library