For the job of a typist, pressing a key on a keyboard is an example of a(n) _____; being able to type words on the keyboard, format a document, and e-mail final documents would form a(n)_____.

To be able to use the information about depth that is supplied by the cues of retinal disparity and convergence,

a. people must keep one eye closed. b. people must have two working eyes. c. the head must be moved slowly back and forth. d. objects must be farther than ten feet away.

Which of the following is a correct match?

a. Stage 1 - sleep spindles b. Stage 2 - beta waves c. Stage 3 - hypnic jerk d. Stage 4 - delta waves