Questions: "Yes, people are right.  Caffeine is addictive.", 5 Oct 94, 
           NY Times, p. B9.

Journal Article: "Caffeine dependence syndrome: evidence from case histories
                 and experimental evaluations", E.C. Strain et al., 5 Oct 94,
                 JAMA, v. 272, no. 13, pp. 1043-1048.

This study had two parts: evaluations of a group of self-selected subjects
and a randomized experiment.

1)  How were the participants in the study chosen?

2)  Based on this study, what can you say about the percent of caffeine users
    who are addicted?

3)  How were the participants in the double-blind experiments chosen?

4)  What were the treatments in the experiment? 

5)  How was double-blindness assured? (2 answers required: blindness 
    for the participants and blindness for the researchers)

6)  What outcomes were measured in the experiment?

7)  Do you think that the newspaper article did a good job summarizing the
    report?

8)  If you could add one paragraph to the newspaper article, what would you 
    say?