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: The main pharmacological treatment for obsessive-compulsive disorder or OCD is: 
 Options:  <0> Dopamine agonists. <1> NMDA receptor blockers. <2> Inhibitors of monoamine oxidase or MAOIs. <3> Selective serotonin or 5-HT reuptake inhibitors. <4> Neuroleptics
psychology

Question: The existence of a statistically significant association between two ordinal variables can be determined by: 
 Options:  <0> The Kruskal-Wallis test. <1> The Pearson correlation. <2> The Kappa test. <3> The Spearman correlation. <4> The Wilcoxon test.

psychology