| Literature DB >> 575840 |
Abstract
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.Mesh：
Year: 1979 PMID： 575840 DOI： 10.1017/s0001566000009089
Source DB: PubMed Journal: Acta Genet Med Gemellol (Roma) ISSN： 0001-5660