Joe wants his boss to think he's a hard worker. Whenever his boss walks by his office he starts to type furiously on his computer. Joe is engaging in which of the following?

The tendency to perceive a door as a rectangular structure regardless of the angle you view it from is called __________

a) size continuity. b) shape continuity. c) shape constancy. d) depth perception.

According to the CDC (2008), about ____ of American adolescent girls and ____ of boys in grades 9–12 report engaging in eating disordered behavior in the past 30 days

a. 20%; 10% b. 15%; 7% c. 10%; 4% d. 5%; 1%