The experimental treatment initiated by a researcher can be ...

[washai]

The experimental treatment initiated by a researcher can be described as what kind of variable?
 
  a. Independent
  b. Dependent
  c. Extraneous
  d. Outcome

Question 2

Which factor should be the primary consideration when determining the validity of experimental study findings?
 
  a. The extent to which the researcher controlled intervening variables
  b. The number of subjects who dropped out of the control and experimental groups
  c. The credentials and previous experience of the researcher
  d. The number of persons involved in the data collection process

[mcomstock09]

Answer to Question 1

ANS: A

Feedback
A The experimental treatment is the independent variable.
B The dependent variable is the outcome variable.
C An extraneous or intervening variable can interfere with establishing causality between the independent and dependent variable.
D The outcome variable is the dependent variable.

Answer to Question 2

ANS: A

Feedback
A Control is the ultimate criterion in experimental research.
B Although mortality (dropout rate) is important, it is not the primary consideration in determining the validity of the findings.
C Although researcher credentials are important, they do not ensure experimental control.
D The number of data collectors is not the primary criterion for determining the validity of conclusions.

[washai]

Excellent

[kjohnson]

Gracias!