56. Epidemiology is the study of A) unique cases or unusual disorders. B) the rates and correlates of disorders in a population. C) the development of disorders over the life span. D) mental disorders in other cultures. 57. Professor Merrick wishes to study the percentage of men from various social classes who drop out of school. Which of the following methods would be most useful? A) experiment B) case studies C) epidemiological research D) mixed designs 58. There is no relationship between social class and schizophrenia. What types of research would most likely lead to such a conclusion? A) epidemiological and case study B) epidemiological and correlational C) case study and mixed design D) correlational and experimental 59. “About 2% of adults have obsessive-compulsive disorder.” This is a statement about the __________ of schizophrenia. A) incidence B) prevalence C) risk factor D) correlation coefficient 60. Incidence refers to A) the likelihood that a disorder will be found in another culture. B) the number of people who develop new cases of the disorder in a given time period. C) the proportion of a population that has a disorder now. D) the likelihood that a person will have a disorder given that they have a particular characteristic. Â Â