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: The research strategy in psychotherapy consisting of comparing all the components of one treatment with another in which one of the components of said treatment is eliminated, is known as:
Options: <0> Unique case design. <1> Dismantling. <2> Process study <3> Standardization of treatments. <4> Placebo design
A:
psychology