Martha knows that her memory is not what it used to be, so she makes up rhymes for items that are especially important to remember. Martha is using a(n) _____ technique.

________ refers to the desire to undertake an activity because of external rewards, not because we find it interesting or enjoyable

a. Intrinsic motivation b. Compliance c. Extrinsic motivation d. Social comparison

The variance of a distribution of Z scores is always

A) ?Z/N B) (Z)(M + SD) C) 0 D) 1