Since the 1960s, anthropologist (and one-time Penn State professor) Napoleon Chagnon has spent years studying the Yanomamo Indians of Brazil and Venezuela. He has lived with them, recorded much of their behavior, produced extensive genealogies, and conducted countless interviews. This research is an example of:___________________________.
Cohort study is a usually a long-term research inwhich the individuals share a common characteristics such as ancestry, date of birth amongst others. In cohort study, no treatment is administered or control group.
