At the beginning of treatment, the subjects
were given a list of all caffeine-containing beverages
and their caffeine content. Caffeine-containing
medications were not listed, because
none of the subjects had indicated in their questionnaires
that they took any. This beverage
list was modified from one compiled by Greden
(1974). Whereas Greden listed the range of caffeine
(mg) contained in a cup of a particular
beverage, e.g., brewed coffee contains 100 to
150 mg of caffeine, in the present study the
mean of each range was used, e.g., brewed coffee
was listed as containing 125 mg of caffeine per
cup. Subjects were encouraged to switch from
brewed coffee (125 mg caffeine) to instant coffee
(93 mg caffeine) or to a beverage containing
less caffeine, e.g., tea (68 mg), cola (50 mg), or,
better yet, to decaffeinated coffee (only 3 mg
caffeine). The meeting ended with the second