Are events that influence groups of people during the same years, such as the influence of world war ii on the "gi generation"). a. period effects b. cohort effects c. rites of passage d. aging effects. e. all of the above

B. Cohort effects are events that influence groups of people during the same years. It is a social science that aims to research on a same group of people with shared experiences and often used in researching for patterns of illnesses by the epidemiologists.