If internal validity in an experiment is low, there is probably ...

[Marty]

If internal validity in an experiment is low, there is probably something wrong with _____.
 
  a. the participants or subjects c. the scoring of the task
  b. the design of the experiment d. the scale of measurement used

Question 2

The internal validity of an experiment is _____.
 
  a. is the ability to draw appropriate conclusions because the controls are adequate
  b. not making a Type I error because alpha was set very high
  c. the ability to generalize the results beyond the experimental situation
  d. made stronger by the presence of a confounded variable

[nmyers]

Answer to Question 1

B
Design includes keeping all factors other than the independent and dependent variables constant for all conditions. Internal validity is reduced when the design does not accomplish this.

Answer to Question 2

A
This is the definition of internal validity.

[Marty]

TYSM

[Dinolord]

Gracias!