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The Sleep-Wakefulness Cycle in Mexican Adults

University of California at Santa Cruz

The sleep-wakefulness patterns of 257 Mexican males and females ranging in age from the 20s to 80s was studied using a questionnaire. The average duration of sleep exceeded that typically prescribed for other Western cultures (8 hours per 24), and significantly varied with age decreasing from the 20s to 50s, after which there was an increase. There was a significantly greater incidence of sleep disturbance in subjects over 50 Compared to the other Ss the post-awakening mood of those with sleep disturbance and those over 50 was described by a significantly greater frequency of negative affect. Significant age and sex differences were found for the frequency of dream recall. The duration and frequency of daytime naps in Ss of all age groups revealed the presence of a polycyclic sleep-wakefulness cycle which has not been reported with such generality in other Western cultures.

Journal of Cross-Cultural Psychology, Vol. 2, No. 4, 353-364 (1971)
DOI: 10.1177/002202217100200405


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