In Order to Get Her 2^nd Grade Students to Memorize

Multiple Choice

In order to get her 2^nd grade students to memorize the poems written on the chalkboard,Mrs.Thyberg gives the students stickers for each poem they can recite from memory.After earning 5 stickers,a student gets to pick a prize out of the goody box.Mrs.Thyberg is using (a) ________________ to modify the children's behaviors.

A) token economy
B) applied behavior analysis
C) negative reinforcement
D) classical conditioning.