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.

Question: Which were the first authors who investigated the role that stressful life events could have on health ?: 
 Options:  <0> Mechanic <1> Matarazzo <2> Zola <3> Lazarus <4> Holmes and Rahe.
psychology

Question: In studies that use meta-analysis for the systematic review of the results of psychotherapies, which is the most used dependent variable? : 
 Options:  <0> The number of depressive symptoms. <1> The size of the effect. <2> The systematized observation of the therapist. <3> The number of patients that has been cured. <4> The expectations of the patient.
psychology

Question: What causal factors are particularly relevant in female anorgasmia ?: 
 Options:  <0> The hereditary factors. <1> The psychological factors. <2> The organic factors. <3> The environmental factors. <4> The consumption of substances.

psychology