Article
Intrapair differences in personality and cognitive ability among young monozygotic twins distinguished by chorion type.
Behavior genetics - 1 Sept 1995
Sokol D K, Moore C A, Rose R J, Williams C J, Reed T, Christian J C
Abstract excerpt
We evaluated placentation effects on behavioral resemblance of 44 pairs of monozygotic (MZ) twin children. Tested at ages 4-6, the twins' zygosity and placental type had been determined at their delivery. The sample included 23 monochorionic (MC) and 21 dichorionic (DC) MZ twin pairs: DC-MZ twins result from separation of blastomeres within 72 h of ovulation; MC-MZ twins arise from later duplication of the inner...
Topics
- Child
- Child, Preschool
- Female
- Genetic Markers
- Gestational Age
- Humans
- Intelligence
- Intelligence Tests
- Male
- Personality
- Personality Assessment
