The project works with families referred by county mental health services that
include sibling pairs or triads who are between the ages of 4 and 10.
Not exact matches
Between these types, triplets that
include an identical (monozygotic)
pair of
siblings plus a fraternal
sibling are the result of a dizygotic pregnancy, where one zygote divides into two fetuses and the other doesn't.
The other somewhat unique feature of the study is that it
included «discordant
sibling pairs,» which means that one
sibling was breastfed and the other was formula fed.
Almost 3000
sibling pairs were
included in the study.
The study
included more than 3,000
sibling pairs (that is, half -
siblings, full
siblings, and identical and nonidentical twins).
The sample for this landmark study
included 720
pairs of same - sex adolescent
siblings —
including twins, half
siblings, and genetically unrelated
siblings — and their parents.
Tuition: $ 35 /
pair (parent / guardian plus child, half off tuition for
sibling) per workshop (
includes materials) Terms and Conditions
In high school, Leo mixes with a socially diverse crowd that
includes Starla and Niles Whitehead, a
pair of impoverished orphans from Appalachia; Ike Jefferson, one of the first black students integrated into Leo's school; and twins Sheba and Trevor Poe — seemingly picture - perfect Southern
siblings.
A probability sample of full
siblings was also selected to be
included in the
sibling pairs sample [33].
The sample
included 3
pairs of
siblings, with both children within the targeted age range at the time of referral.
First, any explanation that is used to account for the unexplained variance — the nongenetic differences between children reared in the same home — should apply to all kinds of
sibling pairs,
including identical twins, because the conclusion about the ineffectiveness of the shared environment holds for all of them.