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Acta geneticae medicae et gemellologiae: twin research (1)

International Soc for Twin Studies (1)

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Sleep and Dream Characteristics in Twins
L. Gedda, G. Brenci
Journal:

Acta geneticae medicae et gemellologiae: twin research / Volume 28 / Issue 3 / July 1979

Published online by Cambridge University Press:

01 August 2014, pp. 237-239

Print publication:

July 1979
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A study of sleep and dream characteristics has been carried out by questionnaire on a sample of 77 MZ and 76 DZ same-sex twin pairs of two age groups, 6–8 and 16–18 years. Genetic effects could not be detected in the younger age group and appeared to be rather limited in the older one, possibly as a result of the limited variability of the considered variables and of the levelling influence of the common environment.