Alyson looks at a picture of arrows and sees white arrows pointing to the right against a black background. She looks at the picture longer, and then sees black arrows pointing to the left against a white background. Her perception of this stimulus is an example of _____

According to the concept of the five skandhas, the self is

a) empty. b) real. c) primary. d) whole.

Here is a reasoning problem: If Mary is a psychology major at your college, then she must take statistics. Mary graduates from your college without taking statistics. Therefore, Mary is not a psychology major. What kind of problem is this?

a. analogy b. conditional reasoning problem c. the crystal-ball technique d. syllogism