During his college years, Jacob often experienced episodes of intense fear accompanied by the physical sensations of a heart attack. Jacob might have experienced a ________ disorder while in college

Compared to urine samples, hair samples

A. can be used to test for a greater variety of drugs. B. can detect drug use for up to a week. C. can detect drug use for up to 90 days. D. are harder to obtain.

You are trying to determine which of two terms is related to identical twins. You see "monozygotic" and "dizygotic." You remember that a zygote is formed from one egg and one sperm and that "mono" means one and "di" means two. Identical twins would have to result from the same egg and the same sperm, thus one zygote. Using old information to derive the meaning of "monozygotic" and "dizygotic" illustrates the use of

a. selective comparison. b. selective attention. c. selective combination. d. selective encoding.