Instructions: 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.
Input: Question: Which of the following characteristics defines an endogenous depression?
Options: <0> Its course is continuous. <1> There is an evening worsening. <2> There is an early awakening. <3> There is a good response to placebo. <4> A neurotic personality intervenes in the etiopathogenesis.
Output:
psychology