Author Question: In experimental designs, random assignment of participants helps to reduce threats to A) internal ... (Read 36 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?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

For a complete list of videos, visit our video library