In the example of the ABA design in the book, the results ...

[madam-professor]

In the example of the ABA design in the book, the results indicated that there was a significant increase in performance in the B condition over the baseline A condition, and that there was a significant increase in performance in the second A condition over the B condition. This enabled the experimenter to conclude that the effects were caused by _____.
 
  a. the treatment c. testing
  b. maturation d. none of these

Question 2

In the ABA design, the alternative hypothesis states that ____.
 
  a. there will be a difference among the means of the treatment conditions
  b. there will be an increase going from A to B
  c. the group that gets B will do better than the group that gets A
  d. all means for all conditions will differ significantly

[briseldagonzales]

Answer to Question 1

D
The ABA design does not include counterbalancing. When performance increases over all 3 conditions, it is impossible to conclude what caused the increase.

Answer to Question 2

A
The ABA design is a repeated measures design; hence there are no separate groups.. The alternate hypothesis states that there will be a difference among the groups, but does not say where or how many of the means will differ.

[madam-professor]

Thanks for the timely response, appreciate it

[sailorcrescent]

Gracias!