Which of the following is the best example of what a comparative psychologist would study?
Answer options:
a. Comparing how a rat, pigeon, and dolphin learn to solve a short-term memory problem
b. All of the above are correct
c. Comparing the performance of memory tasks in children of different ages
d. Comparing the sizes of the frontal lobe of the brain in different species of monkeys
e. Comparing the cognitive performance of people from different countries