Under what conditions is history a potential confounding factor? ...

[craiczarry]

Under what conditions is history a potential confounding factor?
 
  A) When the pretest measures are at an unusually high level.
  B) When a disproportionate number of participants are lost from one condition.
  C) When participant selection has been biased.
  D) When the study takes a fairly long time to complete.

Question 2

History is a potential confounding factor in the interrupted time-series design because
 
  A) the time-series design takes a fairly long period of time.
  B) all of the participants are exposed to the same conditions.
  C) the participants are all considered one group despite individual differences in experience.
  D) the momentum of multiple measures is disrupted by the manipulation.

[nathang24]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: A

[craiczarry]

TYSM

[tandmlomax84]

Gracias!