Volunteer bias in twin research: the rule of two-thirds

Soc Biol. Spring 1978;25(1):1-9. doi: 10.1080/19485565.1978.9988312.
No abstract available

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adult
  • Female
  • Humans
  • Male
  • Motivation
  • Personality
  • Pregnancy
  • Research Design*
  • Sex Factors
  • Twins*