Psychosexual study of communist era Hungarian twins

Julia Metneki, Adam Domonkos Tarnoki, David Laszlo Tarnoki, Levente Littvay, Andrew Czeizel

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Our aim in this study is to describe the characteristics of sexual development in twins and estimate the role of heritability and environmental factors as causes of certain sexual disorders. Two hundred and ten adult same-sex twin pairs (92 monozygotic [MZ] female, 41 MZ male, 55 dizygotic [DZ] female and 22 DZ male pairs) were involved in the study. Data were collected in 1982 by self-administered questionnaires that included items on sexual maturation, sexual life, contraception, mutual sexual activity within twin pairs and alcohol use. The ratio of married to unmarried twins was nearly the same in MZs and DZs, with the exception that the divorce rate was higher in MZ female twins (14%), and DZ and male twins were slightly more likely to be single. Menarche was later in twins compared to non-twin Hungarian women. 57% of MZs experienced menarche within 3 months of each other, 77% within 6 months while it occurred for 30% and 43% respectively in DZs. The first seminal emission indicated some delay in male twins compared with the Hungarian general population sample. MZ first kisses occurred later than DZ's first kisses. The same was true for the first petting, masturbation and first sexual intercourse. Anorgasmy is 27% heritable but the estimate is not statistically significant. Concordance rate for premature ejaculation in MZs was greater than in DZs but the structural equation model showed significant misfit. Age at menarche appeared to be strongly heritable.

Original languageEnglish
Pages (from-to)144-149
Number of pages6
JournalTwin Research and Human Genetics
Volume14
Issue number2
DOIs
Publication statusPublished - Apr 1 2011

Keywords

  • Anorgasmy
  • Ejaculation
  • Intercourse
  • Marital status
  • Masturbation
  • Menarche
  • Menstruation

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynaecology
  • Genetics(clinical)

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