1 abbreviation for the Securities and Investments Board: the official organization that controlled how financial markets operated in the UK until 1997, when it was replaced by the Financial Services Authority
Sib-infection experiments were carried out to test the relative effects of selfing and outcrossing on the infection of progeny with parental viruses.
The difference is not a function of the index boys without sibs being younger than those with sibs.
In fraternals, however, an effort to out-strip the sib was the usual reaction in a competitive situation.
Apart from the length of gestation, birth weights of singleton sibs may be differentially affected by many environmental factors.
The current sample consists only of sib-pairs, so we obtained an index of familial vulnerability of an individual from their sibling's trait values.
It should be noted that in the case of families of size 2, this selection method is the same as selecting discordant sib-pairs.
For all lines, the maximum likelihood procedure decomposes families into multiple families of sib-pairs.
Therefore, even with the least intense selection, some sib pairs were not used in the analysis - something that resulted in more biased parameter estimates.
