Three groups (n = 50 each) of pregnant smokers wanting to quit the habit were assigned to three different intervention programs around their 18th week in pregnancy. Group 1 participated in a smoking cessation program offering several self-help methods; group 2 attended a doctor's information meeting at the hospital; and group 3 received a pamphlet on the deleterious effects of smoking in pregnancy. For Group 4, the control group, there was no intervention. In all three intervention groups, more than one-third reduced their smoking to almost half, while 38% quit altogether in group 1, compared with less than 10% in groups 2 and 3. Twelve months later, 16%, 6% and 8% respectively, remained abstinent in the three groups. In groups 2 and 3, abstinence proved to be of the same magnitude as in the control group. We conclude that smoking in pregnancy, being one of the few amenable to risk factors affecting the perinatal death statistics, demands an active smoking cessation program during pregnancy led by specially trained health professionals.

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A detailed review is presented of studies related to the accentuation hypothesis of Bruner & Goodman (1947). It is found that the results from (1) coin studies, (2) symbol studies, and (3) other studies are conflicting and do not substantiate the hypothesis. Through an analysis of this hypothesis and a specification of the concept of perception, the various designs are found to be inadequate for demonstrating perceptual accentuation of size. The hypothesis is forwarded that value asserts an influence upon imaginary processes related to the experience of size.