As the percentage of trials on which the CS and US are paired during acquisition increases, the speed of acquisition ____ and the speed of extinction ____.
A) increases; increases
B) increases; decreases
C) decreases; decreases
D) decreases; increases

Question

Quizplus · Accepted Answer

As the percentage of trials on which the CS and US are paired during acquisition increases, the speed of acquisition increases because the CS becomes more strongly associated with the US. The speed of extinction decreases because the CS has become more strongly associated with the US, so it takes more trials to extinguish the association.

As the Percentage of Trials on Which the CS and US