In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Q: Question: According to Kazdin, what is the meaning of the significant increase in the intensity or frequency of a behavior when an extinction program is applied to said behavior ?:
Options: <0> Burst of extinction. <1> Spontaneous recovery <2> Graduation of extinction. <3> Efficacy of extinction. <4> Positive punishment
A:
psychology