About what percentage of the population will have an IQ score over 100?

Which of the following people would be perceived most positively?

a) Meredith, who walks carefully down the stairs. b) Gregory, who walks slowly but directly to his destination down the hall. c) Susan, who walks briskly but stooped over down the hallway. d) Gretchen, who walks briskly down the hall with an upright posture.

A compelling illustration of contrast enhancement is

A) the complementary color afterimage demonstration. B) the Mach band demonstration. C) lateral inhibition. D) color constancy. E) the cocktail sausage demonstration.