1. Which of the following studies used a participant observer approach?
a) Darwin's study of natural selection?
b) Levine's study of the Love Canal Home owner's Association?
c) Fossey's study of the mountain gorilla
d) All of the above
2. One of the most important uses of a correlation is its potential use in_________
a) Casual interferences
b) determining differences between groups
c) enhancing internal validity
d) the prediction of future events