When referring to the question of whether the experimental ...

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When referring to the question of whether the experimental stimulus made some difference in the specific instance under investigation, one is referring to
 a. external validity.
  b. internal validity.
  c. concomitant variation.
  d. cross sectional analysis.
  e. interaction errors.

Question 2

In regard to internal and external validity
 a. you can't have one without the other.
  b. procedures used to establish internal validity will also establish external validity.
  c. they are matters of degree rather than all or nothing propositions.
  d. neither is important in laboratory experiments.
  e. internal validity is a much more important issue in marketing than external validity.

[juicepod]

Answer to Question 1

b

Answer to Question 2

C

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TYSM

[Bigfoot1984]

Gracias!